Chapter 4 Pressure Vessel Steel Plates 107


Handbook of Comparative World Steel Standards
4.1 Carbon Steels for Pressure Vessel Plates

4.1A Mechanical Properties of Carbon Steels for Pressure Vessel Plates (Continued)

Section Thickness
Yield Strength, min Tensile Strength, min
Standard
Designation
Grade, Class, Type,
Symbol or Name
Steel
Number
UNS
Number
Heat
Treatment
t, mm t, in.
N/mm
2
or
MPa
ksi
N/mm
2
or
MPa
ksi

Elongation,
min, %
Other
≤ 50
370

16
50 < t ≤ 100
355

510-650

20
100 < t ≤ 125
345

500-640

20
JIS G 3124:1987 SEV 245
R, N, NT
or P
125 < t ≤ 150
335

490-630

20
31 J at 0°C
≤ 16

355

16 < t ≤ 40
345

40 < t ≤ 60
335

510-650

60 < t ≤ 100
315

490-630

100 < t ≤ 150
295

480-630

EN 10028-2:2003 P355GH 1.0473 N
150 < t ≤ 250
280

470-630

20
27 J at 0°C
3 < t ≤ 16
355

21
16 < t ≤ 40
345
21
40 < t ≤ 60
335
510-650
21
60 < t ≤ 100
315 500-650 20
P 355 N
100 < t ≤ 150
295 490-640 20
27 J at 0°C
3 < t ≤ 16
355
21
16 < t ≤ 40
345
21
40 < t ≤ 60
335
510-650
21
60 < t ≤ 100
315 500-650 20
ISO 9328-2:1991
PH 355 N
100 < t ≤ 150
295 490-640 20

27 J at 0°C
N or QT
≤ 65 ≤ 2½
ASTM A 738/A 738M-03a A K12447
QT
> 65 > 2½
310
45
515-655
75-95
20
6 ≤ t ≤ 50
355

50 < t ≤ 100
335

JIS G 3115:2000 SPV 355 AR
100 < t ≤ 150
315

520-640

≤16 mm: 14
>16 mm: 18
>40 mm: 21
47 J at 0°C
Chapter 4 Pressure Vessel Steel Plates 108



Handbook of Comparative World Steel Standards
4.1 Carbon Steels for Pressure Vessel Plates

4.1A Mechanical Properties of Carbon Steels for Pressure Vessel Plates (Continued)

Section Thickness
Yield Strength, min Tensile Strength, min
Standard
Designation
Grade, Class, Type,
Symbol or Name
Steel
Number
UNS
Number
Heat
Treatment
t, mm t, in.
N/mm
2
or
MPa
ksi
N/mm
2
or
MPa
ksi
Elongation,
min, %

Other
≤ 65 ≤ 2½
415
60
550-690
80-100
22
65 < t ≤ 100 2½ < t ≤ 4
380
55
515-655
75-95
22
2 K12437 QT
100 < t ≤ 150 4 < t ≤ 6
315
46
485-620
70-90
20
≤ 65 ≤ 2½
380
55
550-690
80-100
22
65 < t ≤ 100 2½ < t ≤ 4
345
50
515-655

75-95
22
ASTM A 537/A 537M-95 (2000)
3 K12437 QT
100 < t ≤ 150 4 < t ≤ 6
275
40
485-620
70-90
20
ASTM A 737/A 737M-99 C K12202 N 415
60
550-690
80-100
23
≤ 65 ≤ 2½
415
60
550-690
80-100
22
65 < t ≤ 100 2½ < t ≤ 4
380
55
515-655
75-95
22
ASTM A 738/A 738M-03a C QT
> 100 > 4 315
46

485-620
70-90
20
6 < t ≤ 50
410

50 < t ≤ 100
390

JIS G 3115:2000 SPV410 TMCP
100 < t ≤ 150
370

550-670

see standard
47 J at -10°C
≤ 12.5 ≤ ½
345
50
570-725
83-105
22
ASTM A 612/A 612M-03 K02900 AR
12.5 < t ≤ 25 ½ < t ≤ 1
345
50
560-695
81-101
22

6 < t ≤ 50
450

50 < t ≤ 100
430

JIS G 3115:2000 SPV450 QT
100 < t ≤ 150
410

570-700

see standard
47 J at -10°C
ASTM A 738/A 738M-03a B K12001 QT 415
60
585-705
85-102
20

Chapter 4 Pressure Vessel Steel Plates 109


Handbook of Comparative World Steel Standards
4.1 Carbon Steels for Pressure Vessel Plates

4.1B Chemical Composition of Carbon Steel Pressure Plates

Section Thickness Weight, %, Maximum, Unless Otherwise Specified
Standard

Designation
Grade, Class,
Type, Symbol,
or Name
Steel
Number
UNS
Number
t, mm t, in. C Mn Si P S Cr Ni Mo Others
EN 10028-2:1992 P235GH 1.0345 0.16 0.60-1.20 0.35 0.025 0.015 0.30 0.30 0.08
Cu 0.30; Nb 0.020; Ti 0.03;
V 0.02; Al ≥ 0.020; N 0.012;
Cr+Cu+Mo+Ni 0.70
ISO 9328-2:1991
P 235
PH 235
0.17 0.40-1.20 0.35 0.035 0.030 0.30 0.30 0.08
Cu 0.30; Al ≥ 0.020;
Cr+Cu+Mo+Ni 0.70
EN 10028-3:2003 P275NH 1.0487 0.16 0.80-1.50 0.40 0.025 0.015 0.30 0.30 0.08
Cu 0.30; Nb 0.05; Ti 0.03;
V 0.05; N 0.012; Al ≥ 0.020;
Nb+Ti+V 0.05; Cr+Cu+Mo0.45
≤ 100
0.18 1.40 0.15-0.35 0.030 0.030
JIS G 3115:2000 SPV235
> 100 0.20 1.40 0.15-0.35 0.030 0.030
≤ 25
0.24 0.90 0.15-0.30 0.035 0.040
25 < t ≤ 50

0.27 0.90 0.15-0.30 0.035 0.040
JIS G 3103:1987 SB 410
50 < t ≤ 200
0.30 0.90 0.15-0.30 0.035 0.040
≤ 12.5
0.21 0.85-1.20 0.15-0.40 0.030 0.030
12.5 < t ≤ 50
0.23 0.85-1.20 0.15-0.40 0.030 0.030
50 < t ≤ 100
0.25 0.85-1.20 0.15-0.40 0.030 0.030
JIS G 3118:2000 SGV410
100 < t ≤ 200
0.27 0.85-1.20 0.15-0.40 0.030 0.030
EN 10028-2:2003 P265GH 1.0425 0.20 0.80-1.40 0.40 0.025 0.015 0.30 0.30 0.08
Cu 0.30; Nb 0.020; Ti 0.03;
V 0.02; Al ≥ 0.020; N 0.012;
Cr+Cu+Mo+Ni 0.70
ISO 9328-2:1991
P 265
PH 265
0.20 0.50-1.40 0.35 0.035 0.030 0.30 0.30 0.08
Cu 0.30; Al ≥ 0.020;
Cr+Cu+Mo+Ni 0.70
≤ 25 ≤ 1
0.24 0.90 0.15-0.40 0.035 0.035
25 < t ≤ 50 1 < t ≤ 2
0.27 0.90 0.15-0.40 0.035 0.035
50 < t ≤ 100 2 < t ≤ 4
0.29 0.90 0.15-0.40 0.035 0.035
100 < t ≤ 200 4 < t ≤ 8

0.31 0.90 0.15-0.40 0.035 0.035
ASTM A 515/A 515M-03 60 [415] K02401
> 200 > 8 0.31 0.90 0.15-0.40 0.035 0.035
≤ 12.5 ≤ ½
0.21 0.60-0.90 0.15-0.40 0.035 0.035
12.5 < t ≤ 50 ½ < t ≤ 2
0.23 0.85-1.20 0.15-0.40 0.035 0.035
50 < t ≤ 100 2 < t ≤ 4
0.25 0.85-1.20 0.15-0.40 0.035 0.035
100 < t ≤ 200 4 < t ≤ 8
0.27 0.85-1.20 0.15-0.40 0.035 0.035
ASTM A 516/A 516M-03 60 [415] K02100
> 200 > 8 0.27 0.85-1.20 0.15-0.40 0.035 0.035
P 315 TN
PH 315 TN
0.18 0.70-1.50 0.10-0.40 0.035 0.035
ISO 9328-4:1991
PL 315 TN 0.16 0.70-1.50 0.10-0.40 0.030 0.030
0.30 0.30 0.08
Cu 0.30; Nb 0.05; Ti 0.03;
V 0.05; N 0.020; Al ≥ 0.020;
Nb+Ti+V 0.05; Cr+Cu+Mo 0.45

Chapter 4 Pressure Vessel Steel Plates 110


Handbook of Comparative World Steel Standards
4.1 Carbon Steels for Pressure Vessel Plates

4.1B Chemical Composition of Carbon Steel Pressure Plates (Continued)


Section Thickness Weight, %, Maximum, Unless Otherwise Specified
Standard
Designation
Grade, Class,
Type, Symbol,
or Name
Steel
Number
UNS
Number
t, mm t, in. C Mn Si P S Cr Ni Mo Others
≤ 25 ≤ 1
0.28 0.90 0.15-0.40 0.035 0.035
25 < t ≤ 50 1 < t ≤ 2
0.31 0.90 0.15-0.40 0.035 0.035
50 < t ≤ 100 2 < t ≤ 4
0.33 0.90 0.15-0.40 0.035 0.035
100 < t ≤ 200 4 < t ≤ 8
0.33 0.90 0.15-0.40 0.035 0.035
ASTM A 515/A 515M-03 65 [450] K02800
> 200 > 8 0.33 0.90 0.15-0.40 0.035 0.035
≤ 12.5 ≤ ½
0.24 0.85-1.20 0.15-0.40 0.035 0.035
12.5 < t ≤ 50 ½ < t ≤ 2
0.26 0.85-1.20 0.15-0.40 0.035 0.035
50 < t ≤ 100 2 < t ≤ 4
0.28 0.85-1.20 0.15-0.40 0.035 0.035
100 < t ≤ 200 4 < t ≤ 8
0.29 0.85-1.20 0.15-0.40 0.035 0.035

ASTM A 516/A 516M-03 65 [450] K02403
> 200 > 8 0.29 0.85-1.20 0.15-0.40 0.035 0.035
≤ 25
0.28 0.90 0.15-0.30 0.035 0.040
25 < t ≤ 50
0.31 0.90 0.15-0.30 0.035 0.040
JIS G 3103:1987 SB 450
50 < t ≤ 100
0.33 0.90 0.15-0.40 0.035 0.040
≤ 12.5
0.24 0.85-1.20 0.15-0.40 0.030 0.030
12.5 < t ≤ 50
0.26 0.85-1.20 0.15-0.40 0.030 0.030
50 < t ≤ 100
0.28 0.85-1.20 0.15-0.40 0.030 0.030
JIS G 3118:2000 SGV450
100 < t ≤ 200
0.29 0.85-1.20 0.15-0.40 0.030 0.030
EN 10028-2:2003 P295GH 1.0481 0.08-0.20 0.90-1.50 0.40 0.025 0.015 0.30 0.30 0.08
Cu 0.30; Nb 0.020; Ti 0.03;
V 0.02; Al ≥ 0.020; N 0.012;
Cr+Cu+Mo+Ni 0.70
P 290 0.20
ISO 9328-2:1991
PH 290 0.14-0.20
0.90-1.50 0.40 0.035 0.030 0.30 0.30 0.08
Cu 0.30; Al ≥ 0.020;
Cr+Cu+Mo+Ni 0.70
≤ 25
0.31 0.90 0.15-0.30 0.035 0.040

25 < t ≤ 50
0.33 0.90 0.15-0.30 0.035 0.040
JIS G 3103:1987 SB 480
50 < t ≤ 200
0.35 0.90 0.15-0.30 0.035 0.040
≤ 12.5
0.27 0.85-1.20 0.15-0.40 0.030 0.030
12.5 < t ≤ 50
0.28 0.85-1.20 0.15-0.40 0.030 0.030
50 < t ≤ 100
0.30 0.85-1.20 0.15-0.40 0.030 0.030
JIS G 3118:2000 SGV480
100 < t ≤ 200
0.31 0.85-1.20 0.15-0.40 0.030 0.030
NOTE: This section continued on next page.
Chapter 4 Pressure Vessel Steel Plates 111


Handbook of Comparative World Steel Standards
4.1 Carbon Steels for Pressure Vessel Plates

4.1B Chemical Composition of Carbon Steel Pressure Plates (Continued)

Section Thickness Weight, %, Maximum, Unless Otherwise Specified
Standard
Designation
Grade, Class,
Type, Symbol,
or Name
Steel

Number
UNS
Number
t, mm t, in. C Mn Si P S Cr Ni Mo Others
≤ 25 ≤ 1
0.31 1.20 0.15-0.40 0.035 0.035
25 < t ≤ 50 1 < t ≤ 2
0.33 1.20 0.15-0.40 0.035 0.035
50 < t ≤ 100 2 < t ≤ 4
0.35 1.20 0.15-0.40 0.035 0.035
100 < t ≤ 200 4 < t ≤ 8
0.35 1.20 0.15-0.40 0.035 0.035
ASTM A 515/A 515M-03 70 [485] K03101
> 200 > 8 0.35 1.20 0.15-0.40 0.035 0.035
≤ 12.5 ≤ ½
0.27 0.85-1.20 0.15-0.40 0.035 0.035
12.5 < t ≤ 50 ½ < t ≤ 2
0.28 0.85-1.20 0.15-0.40 0.035 0.035
50 < t ≤ 100 2 < t ≤ 4
0.30 0.85-1.20 0.15-0.40 0.035 0.035
100 < t ≤ 200 4 < t ≤ 8
0.31 0.85-1.20 0.15-0.40 0.035 0.035
ASTM A 516/A 516M-03 70 [485] K02700
> 200 > 8 0.31 0.85-1.20 0.15-0.40 0.035 0.035
≤ 40 ≤ 1½
0.70-1.35
ASTM A 537/A 537M-95 (2000) 1 K12437
> 40 > 1½
0.24
1.00-1.60

0.15-0.50 0.035 0.035 0.25 0.25 0.08 Cu 0.35
ASTM A 737/A 737M-99 B K12001 0.20 1.15-1.50 0.15-0.50 0.035 0.030 Cb 0.05
JIS G 3115:2000 SPV315 0.18 1.60 0.15-0.55 0.030 0.030
P 315 0.20
ISO 9328-2:1991
PH 315 0.15-0.20
0.90-1.60 0.10-0.50 0.035 0.030 0.30 0.30 0.08
Cu 0.30; Al ≥ 0.020;
Cr+Cu+Mo+Ni 0.70

Chapter 4 Pressure Vessel Steel Plates 112


Handbook of Comparative World Steel Standards
4.1 Carbon Steels for Pressure Vessel Plates

4.1B Chemical Composition of Carbon Steel Pressure Plates (Continued)

Section Thickness Weight, %, Maximum, Unless Otherwise Specified
Standard
Designation
Grade, Class,
Type, Symbol,
or Name
Steel
Number
UNS
Number
t, mm t, in. C Mn Si P S Cr Ni Mo Others
JIS G 3124:1987 SEV 245

6 ≤ t ≤ 150
0.20 0.80-1.60 0.15-0.60 0.035 0.035 0.35 Cu 0.35; Nb 0.05; V 0.10
EN 10028-2:2003 P355GH 1.0473 0.10-0.22 1.10-1.70 0.60 0.025 0.015 0.30 0.30 0.08
Cu 0.30; Nb 0.020; Ti 0.03;
V 0.02; Al ≥ 0.020; N 0.012;
Cr+Cu+Mo+Ni 0.70
P 355 0.22 0.90-1.60 0.10-0.50 0.035 0.030 0.30 0.30 0.08 Al 0.020; Cu 0.30
ISO 9328-2:1991
PH 355 0.15-0.22 0.90-1.60 0.10-0.50 0.035 0.030 0.30 0.30 0.08 Al 0.020; Cu 0.30
≤ 65 ≤ 2½
0.24 1.50 0.15-0.50 0.035 0.035 0.25 0.50 0.08
Cu 0.35; V 0.07; Cb 0.04;
Cb+V 0.08
ASTM A 738/A 738M-03a A K12447
> 65 > 2½ 0.24 1.60 0.15-0.50 0.035 0.035 0.25 0.50 0.08
Cu 0.35; V 0.07; Cb 0.04;
Cb+V 0.08
JIS G 3115:2000 SPV 355 0.20 1.60 0.15-0.55 0.030 0.030
≤ 40 ≤ 1½
0.70-1.35
2 K12437
> 40 > 1½
0.24
1.00-1.60
0.15-0.50 0.035 0.035 0.25 0.25 0.08 Cu 0.35
≤ 40 ≤ 1½
0.70-1.35
ASTM A 537/A 537M-95 (2000)
3 K12437
> 40 > 1½

0.24
1.00-1.60
0.15-0.50 0.035 0.035 0.25 0.25 0.08 Cu 0.35
ASTM A 737/A 737M-99 C K12202 0.22 1.15-1.50 0.10-0.55 0.035 0.030 V 0.04-0.11; N 0.03
≤ 65 ≤ 2½
1.50
ASTM A 738/A 738M-03a C
> 65 > 2½
0.20
1.60
0.15-0.50 0.025 0.025 0.25 0.50 0.08 Cu 0.35; V 0.05
JIS G 3115:2003 SPV410 0.18 1.60 0.15-0.75 0.030 0.030
ASTM A 612/A 612M-03 K02900 0.25 1.00-1.50 0.15-0.50 0.035 0.025 0.25 0.25 0.08 Cu 0.35; V 0.08
JIS G 3115:2003 SPV450 0.18 1.60 0.15-0.75 0.030 0.030
≤ 40 ≤ 1½
0.20 0.90-1.50 0.15-0.55 0.030 0.030 0.30 0.60 0.20
40 ≤ t ≤ 65
1½ ≤ t ≤
2½
0.20 0.90-1.50 0.15-0.55 0.030 0.030 0.30 0.60 0.30
ASTM A 738/A 738M-03a B K12001
> 65 > 2½ 0.20 0.90-1.60 0.15-0.55 0.030 0.030 0.30 0.60 0.30
Cu 0.35; V 0.07; Cb 0.04;
Cb+V 0.08

Chapter 4 Pressure Vessel Steel Plates 113


Handbook of Comparative World Steel Standards
4.2 Carbon Steels for Pressure Vessel Plates - With Impact Testing Below -20°C


4.2A Mechanical Properties of Carbon Steels for Pressure Vessel Plates - With Impact Testing Below -20°C

Section Thickness
Yield Strength, min Tensile Strength, min
Standard
Designation
Grade, Class, Type,
Symbol or Name
Steel
Number
UNS
Number
Heat
Treatment
t, mm t, in.
N/mm
2
or
MPa
ksi
N/mm
2
or
MPa
ksi
Elongation,
min, %
Other
≤ 35

255

35 < t ≤ 50
245

ISO 9328-4:1991
P 255 TN
PH 255 TN
PL 255 TN
N
50 < t ≤ 70
235

360-480

25
see standard for
impact data
≤ 16
275

16 < t ≤ 40
265

40 < t ≤ 60
255

390-510

24

60 < t ≤ 100
235

370-490
100 < t ≤ 150
225

360-480
EN 10028-3:2003
P275NL1
P275NL2
1.0488
1.1104
N
150 < t ≤ 250
215

350-470


23
see standard for
impact data
≤ 35
285

35 < t ≤ 50
275

ISO 9328-4:1991

P 285 TN
PH 285 TN
PL 285 TN
N
50 < t ≤ 70
265

390-510

24
see standard for
impact data
ASTM A 662/A 662M-03 A K01701 N 275
40
400-540
58-78
23
see standard for
supplementary impact
testing
≤ 40
235

SLA 235 A, B N
>40
215

400-510

6-16 mm: 18

>16 mm: 22
>40 mm: 24
see standard for
impact data
SLA 325 A N 325

440-560

JIS G 3126:2000
SLA 325 B QT 325

440-560

6-16 mm: 22
>16 mm: 30
>20 mm: 22
see standard for
impact data

Chapter 4 Pressure Vessel Steel Plates 114


Handbook of Comparative World Steel Standards
4.2 Carbon Steels for Pressure Vessel Plates - With Impact Testing Below -20°C

4.2A Mechanical Properties of Carbon Steels for Pressure Vessel Plates - With Impact Testing Below -20°C (Continued)

Section Thickness
Yield Strength, min Tensile Strength, min
Standard

Designation
Grade, Class, Type,
Symbol or Name
Steel
Number
UNS
Number
Heat
Treatment
t, mm t, in.
N/mm
2
or
MPa
ksi
N/mm
2
or
MPa
ksi
Elongation,
min, %
Other
AR
≤ 40 ≤ 1½
B K02203
N > 40 > 1½
275
40
450-585

65-85
23
AR
≤ 40 ≤ 1½
ASTM A 662/A 662M-03
C K02007
N > 40 > 1½
295
43
485-620
70-90
22
≤ 65 ≤ 2½
345
50
480-620
70-90
ASTM A 841/A 841M-03a A, B, C, Class 1 TMCP
> 65 > 2½ 310
45
450-585
65-85
22
20 J at -40°C
≤ 16
355

16 < t ≤ 40
345


40 < t ≤ 60
335

490-630 22
60 < t ≤ 100
315

470-610
100 < t ≤ 150
305

460-600
EN 10028-3:2003
P355N
P355NH
P355NL1
P355NL2
1.0562
1.0565
1.0566
1.1106
N
150 < t ≤ 250
295

450-590

21
see standard for
impact data

≤ 35
355

35 < t ≤ 50
345

ISO 9328-4:1991
P 355 TN
PH 355 TN
PL 355 TN
PLH 355 TN
N(+T)
50 < t ≤ 70
325

490-610

22
see standard for
impact data
JIS G 3126:2000 SLA 365 QT 365

490-610

6-16 mm: 20
>16 mm: 28
>20 mm: 20
see standard for
impact data
JIS G 3126:2000 SLA 410

QT or
TMCP
410

520-640

6-16 mm: 18
>16 mm: 26
>20 mm: 18
see standard for
impact data
≤ 65 ≤ 2½
415
60
550-690
80-100
ASTM A 841/A 841M-03a A, B, C, Class 2 TMCP
> 65 > 2½ 380
55
515-655
75-95
22
20 J at -40°C

Chapter 4 Pressure Vessel Steel Plates 115


Handbook of Comparative World Steel Standards
4.2 Carbon Steels for Pressure Vessel Plates - With Impact Testing Below -20°C


4.2B Chemical Composition of Carbon Steels for Pressure Vessel Plates - With Impact Testing Below -20°C

Section Thickness Weight, %, Maximum, Unless Otherwise Specified
Standard
Designation
Grade, Class,
Type, Symbol,
or Name
Steel
Number
UNS
Number
t, mm t, in. C Mn Si P S Cr Ni Mo Others
P 255 TN
PH 255 TN
0.17 0.035 0.035
ISO 9328-4:1991
PL 255 TN 0.15
0.50-1.40 0.10-0.35
0.030 0.030
0.30 0.30 0.08
Cu 0.30; Nb 0.05; Ti 0.03;
V 0.05; N 0.020; Al ≥ 0.020;
Nb+Ti+V 0.05;
Cr+Cu+Mo 0.45
P275NL1 1.0488 0.025 0.015
EN 10028-3:2003
P275NL2 1.1104
0.16 0.80-1.50 0.40
0.020 0.010

0.30 0.30 0.08
Cu 0.30; Nb 0.05; Ti 0.03;
V 0.05; N 0.012; Al ≥ 0.020;
Nb+Ti+V 0.05;
Cr+Cu+Mo 0.45
P 285 TN
PH 285 TN
0.18 0.035 0.035
ISO 9328-4:1991
PL 285 TN 0.16
0.50-1.40 0.10-0.40
0.030 0.030
0.30 0.30 0.08
Cu 0.30; Nb 0.05; Ti 0.03;
V 0.05; N 0.020; Al ≥ 0.020;
Nb+Ti+V 0.05;
Cr+Cu+Mo 0.45
ASTM A 662/A 662M-03 A K01701 0.14 0.90-1.35 0.15-0.40 0.035 0.035
SLA 235 A,B
6 ≤ t ≤ 50
0.15 0.70-1.50 0.15-0.30 0.030 0.025
JIS G 3126:2000
SLA 325 A,B
6 ≤ t ≤ 32
0.16 0.80-1.60 0.15-0.55 0.030 0.025

Chapter 4 Pressure Vessel Steel Plates 116


Handbook of Comparative World Steel Standards

4.2 Carbon Steels for Pressure Vessel Plates - With Impact Testing Below -20°C

4.2B Chemical Composition of Carbon Steels for Pressure Vessel Plates - With Impact Testing Below -20°C

Section Thickness Weight, %, Maximum, Unless Otherwise Specified
Standard
Designation
Grade, Class,
Type, Symbol,
or Name
Steel
Number
UNS
Number
t, mm t, in. C Mn Si P S Cr Ni Mo Others
B K02203 0.19 0.85-1.50 0.15-0.40 0.035 0.035
ASTM A 662/A 662M-03
C K02007 0.20 1.00-1.60 0.15-0.50 0.035 0.035
≤ 40 ≤ 1½
0.70-1.35
A, Class 1
> 40 > 1½
0.20
1.00-1.60
0.15-0.50 0.030 0.030 0.25 0.25 0.08
Cu 0.35; V 0.06; Cb 0.03;
Al ≥ 0.020
≤ 40 ≤ 1½
0.70-1.35
B, Class 1

> 40 > 1½
0.15
1.00-1.60
0.15-0.50 0.030 0.025 0.25 0.60 0.30
Cu 0.35; V 0.06; Cb 0.03;
Al ≥ 0.020
≤ 40 ≤ 1½
0.70-1.60
ASTM A 841/A 841M-03a
C, Class 1
> 40 > 1½
0.10
1.00-1.60
0.15-0.50 0.030 0.015 0.25 0.25 0.08
Cu 0.35; V 0.06; Cb 0.06;
Ti 0.006-0.02
P355N 1.0562
P355NH 1.0565
P355NL1 1.0566
0.025 0.015
EN 10028-3:2003
P355NL2 1.1106
0.18 1.10-1.70 0.50
0.020 0.010
0.30 0.50 0.08
Cu 0.30; Nb 0.05; Ti 0.03;
V 0.10; N 0.012; Al ≥ 0.020;
Nb+Ti+V 0.12;
Cr+Cu+Mo 0.45
P 355 TN

PH 355 TN
0.20 0.035 0.035
ISO 9328-4:1991
PL 355 TN
PLH 355 TN
0.18
0.90-1.7 0.10-0.50
0.030 0.030
0.30 0.30 0.08
Cu 0.30; Nb 0.05; Ti 0.03;
N 0.020; V 0.10; Al ≥ 0.020;
Nb+Ti+V 0.12;
Cr+Cu+Mo 0.45
JIS G 3126:2000 SLA 365
6 ≤ t ≤ 32
0.18 0.80-1.60 0.15-0.55 0.030 0.025
JIS G 3126:2000 SLA 410
6 ≤ t ≤ 32
0.18 0.80-1.60 0.55 0.030 0.025
≤ 40 ≤ 1½
0.70-1.35
A, Class 2
> 40 > 1½
0.20
1.00-1.60
0.15-0.50 0.030 0.030 0.25 0.25 0.08
Cu 0.35; V 0.06; Cb 0.03;
Al ≥ 0.020
≤ 40 ≤ 1½
0.70-1.35

B, Class 2
> 40 > 1½
0.15
1.00-1.60
0.15-0.50 0.030 0.025 0.25 0.60 0.30
Cu 0.35; V 0.06; Cb 0.03;
Al ≥ 0.020
≤ 40 ≤ 1½
0.70-1.60
ASTM A 841/A 841M-03a
C, Class 2
> 40 > 1½
0.10
1.00-1.60
0.15-0.50 0.030 0.015 0.25 0.25 0.08
Cu 0.35; V 0.06; Cb 0.06;
Ti 0.006-0.02

Chapter 4 Pressure Vessel Steel Plates 117


Handbook of Comparative World Steel Standards
4.3 ½Mo Alloy Steels for Pressure Vessel Plates

4.3A Chemical Composition of ½Mo Alloy Steels for Pressure Vessel Plates

Section Thickness Weight, %, Maximum, Unless Otherwise Specified
Standard
Designation
Grade, Class,

Type, Symbol,
or Name
Steel
Number
UNS
Number
t, mm t, in. C Mn Si P S Cr Ni Mo Others
EN 10028-2:2003 16Mo3 1.5415 0.12-0.20 0.40-0.90 0.35 0.025 0.010 0.30 0.30 0.25-0.35
N 0.012; Cu 0.30; Al/N>2
ISO 9328-2:1991 16 Mo 3 0.12-0.20 0.40-0.90 0.35 0.035 0.030 0.30 0.25-0.35 Cu 0.30
EN 10028-2:2003 18MnMo4-5 1.5414 0.20 0.90-1.50 0.40 0.015 0.005 0.30 0.30 0.45-0.60 N 0.012; Cu 0.30
≤ 25 ≤ 1
0.18
25 < t ≤ 50 1 < t ≤ 2
0.21
50 < t ≤ 100 2 < t ≤ 4
0.23
ASTM A 204/A 204M-03 A K11820
> 100 > 4 0.25
0.90 0.15-0.40 0.035 0.035 0.45-0.60
≤ 25
0.18
25 < t ≤ 50
0.21
50 < t ≤ 100
0.23
SB 450 M
100 < t ≤ 150
0.25
0.90 0.15-0.30 0.035 0.040 0.45-0.60

≤ 25
0.20
25 < t ≤ 50
0.23
50 < t ≤ 100
0.25
JIS G 3103:1987
SB 480 M
100 < t ≤ 150
0.27
0.90 0.15-0.30 0.035 0.040 0.45-0.60
≤ 25 ≤ 1
0.20
25 < t ≤ 50 1 < t ≤ 2
0.23
50 < t ≤ 100 2 < t ≤ 4
0.25
ASTM A 204/A 204M-03 B K12020
> 100 > 4 0.27
0.90 0.15-0.40 0.035 0.035 0.45-0.60
≤ 25 ≤ 1
0.23
25 < t ≤ 50 1 < t ≤ 2
0.26
50 < t ≤ 100 2 < t ≤ 4
0.28
ASTM A 204/A 204M-03 C K12320
> 100 > 4 0.28
0.90 0.15-0.40 0.035 0.035 0.45-0.60
≤ 25 ≤ 1

0.20
25 < t ≤ 50 1 < t ≤ 2
0.23
ASTM A 302/A 302M-03 A K12021
> 50 > 2 0.25
0.95-1.30 0.15-0.40 0.035 0.035 0.45-0.60
≤ 25
0.20
25 < t ≤ 50
0.23
JIS G 3119:1987 SBV 1 A
50 < t ≤ 150
0.25
0.95-1.30 0.15-0.30 0.035 0.040 0.45-0.60
JIS G 3124:1987 SEV 295
6 ≤ t ≤ 150
0.19 0.80-1.60 0.15-0.60 0.035 0.035 0.10-0.40 Cu 0.35; Nb 0.05; V 0.10

Chapter 4 Pressure Vessel Steel Plates 118


Handbook of Comparative World Steel Standards
4.3 ½Mo Alloy Steels for Pressure Vessel Plates

4.3A Chemical Composition of ½Mo Alloy Steels for Pressure Vessel Plates (Continued)

Section Thickness Weight, %, Maximum, Unless Otherwise Specified
Standard
Designation
Grade, Class,

Type, Symbol,
or Name
Steel
Number
UNS
Number
t, mm t, in. C Mn Si P S Cr Ni Mo Others
≤ 25
0.20
25 < t ≤ 50
0.23
JIS G 3119:1987 SBV 1 B
50 < t ≤ 150
0.25
1.15-1.50 0.15-0.30 0.035 0.040 0.45-0.60
≤ 25 ≤ 1
0.20
25 < t ≤ 50 1 < t ≤ 2
0.23
ASTM A 302/A 302M-03 B K12022
> 50 > 2 0.25
1.15-1.50 0.15-0.40 0.035 0.035 0.45-0.60
JIS G 3120:1987 SQV 1 A 0.25 1.15-1.50 0.15-0.30 0.035 0.040 0.45-0.60
ASTM
A 533/A 533M-93 (1999)
Type A,
Class 1
K12521 0.25 1.15-1.50 0.15-0.40 0.035 0.035 0.45-0.60
JIS G 3124:1987 SEV 345
6 ≤ t ≤ 150

0.19 0.80-1.70 0.15-0.60 0.035 0.035 0.15-0.50 Cu 0.35; Nb 0.05; V 0.10
JIS G 3120:1987 SQV 1 B 0.25 1.15-1.50 0.15-0.30 0.035 0.040 0.45-0.60
Type A,
Class 2
ASTM
A 533/A 533M-93 (1999)
Type A,
Class 3
K12521 0.25 1.15-1.50 0.15-0.40 0.035 0.035 0.45-0.60

Chapter 4 Pressure Vessel Steel Plates 119


Handbook of Comparative World Steel Standards
4.3 ½Mo Alloy Steels for Pressure Vessel Plates

4.3B Mechanical Properties of ½Mo Alloy Steels for Pressure Vessel Plates

Section Thickness
Yield Strength, min Tensile Strength, min
Standard
Designation
Grade, Class, Type,
Symbol or Name
Steel
Number
UNS
Number
Heat
Treatment

t, mm t, in.
N/mm
2
or
MPa
ksi
N/mm
2
or
MPa
ksi
Elongation,
min, %
Other
≤ 16
275

440-590

16 < t ≤ 40
270

440-590

40 < t ≤ 60
260

440-590

60 < t ≤ 100

240

430-560

100 < t ≤ 150
220

420-570

EN 10028-2:2003 16Mo3 1.5415 N, NT
150 < t ≤ 250
210

410-570

22
31 J at 20°C
3 < t ≤ 16
280
24
16 < t ≤ 40
270
24
40 < t ≤ 60
260
450-600

23
31 J at 20°C
60 < t ≤ 100

240 430-580 22
ISO 9328-2:1991 16 Mo 3 N, NT
100 < t ≤ 150
220 420-570
19
27 J at 20°C
NT
t ≤ 60
345

510-650

20
NT
60 < t ≤ 150
325

510-650

20
EN 10028-2:2003 18MnMo4-5 1.5414
QT
150 < t ≤ 250
310

480-620

20
see standard for
impact data

AR
≤ 40 ≤ 1.5
ASTM A 204/A 204M-03 A K11820
N
> 40 > 1.5
255
37
450-585
65-85
23
SB 450 M
≤ 38: AR
> 38: N
6 ≤ t ≤ 150
255

450-590

23
JIS G 3103:1987
SB 480M
≤ 38: AR
> 38: N
6 ≤ t ≤ 150
275

480-620

21
AR

≤ 40 ≤ 1.5
ASTM A 204/A 204M-03 B K12020
N
> 40 > 1.5
275
40
485-620
70-90
21
AR
≤ 40 ≤ 1.5
ASTM A 204/A 204M-03 C K12320
N
> 40 > 1.5
295
43
515-655
75-95
20
AR
≤ 50 ≤ 2
ASTM A 302/A 302M-03 A K12021
N
> 50 > 2
310
45
515-655
75-95
19
AR

≤ 50

JIS G 3119:1987 SBV 1 A
N
> 50

315

520-660

19
≤ 50
420

15
50 < t ≤ 100
400

540-690

100 < t ≤ 125
390

530-680

JIS G 3124:1987 SEV 295
R, N, NT
or P
125 < t ≤ 150
380


520-670

19
31 J at 0°C

Chapter 4 Pressure Vessel Steel Plates 120


Handbook of Comparative World Steel Standards
4.3 ½Mo Alloy Steels for Pressure Vessel Plates

4.3B Mechanical Properties of ½Mo Alloy Steels for Pressure Vessel Plates

Section Thickness
Yield Strength, min Tensile Strength, min
Standard
Designation
Grade, Class, Type,
Symbol or Name
Steel
Number
UNS
Number
Heat
Treatment
t, mm t, in.
N/mm
2
or

MPa
ksi
N/mm
2
or
MPa
ksi
Elongation,
min, %
Other
≤ 50

JIS G 3119:1987 SBV 1 B AR or N
> 50

345

550-690

18
AR
≤ 50 ≤ 2
ASTM A 302/A 302M-03 B K12022
N
> 50 > 2
345
50
550-690
80-100
18

JIS G 3120:1987 SQV 1 A QT 345

550-690

18
see standard for
impact data
ASTM A 533/A 533M-93 (1999) Type A, Class 1 K12521 QT > 6.5 > 0.25 345
50
550-690
80-100
18
≤ 50
14
50 < t ≤ 100

430

590-740

100 < t ≤ 125
420

580-730

JIS G 3124:1987 SEV 345
R, N, NT
or P
125 < t ≤ 150
410


570-720

18
31 J at 0°C
JIS G 3120:1987 SQV 1 B QT 480

620-790

16
see standard for
impact data
Type A, Class 2 K12521 QT > 6.5 > 0.25 485
70
620-795
90-115
16
ASTM A 533/A 533M-93 (1999)
Type A, Class 3 K12521 QT
6.5 < t ≤ 65 0.25 < t ≤ 2½
570
83
690-860
100-125
16

Chapter 4 Pressure Vessel Steel Plates 121


Handbook of Comparative World Steel Standards

4.4 Cr-Mo Alloy Steels for Pressure Vessel Plates

4.4.1A Chemical Composition of ¾Cr-½Mo Alloy Steels for Pressure Vessel Plates

Section Thickness Weight, %, Maximum, Unless Otherwise Specified
Standard
Designation
Grade, Class,
Type, Symbol,
or Name
Steel
Number
UNS
Number
t, mm t, in. C Mn Si P S Cr Ni Mo Others
ASTM A 387/A 387M-03
Grade 2
Class 1
K12143 0.05-0.21 0.55-0.80 0.15-0.40 0.035 0.035 0.50-0.80 0.45-0.60
SCMV 1 Div 1 0.21 0.55-0.80 0.40 0.030 0.030 0.50-0.80 0.45-0.60
JIS G 4109:1987
SCMV 1 Div 2 0.21 0.55-0.80 0.40 0.030 0.030 0.50-0.80 0.45-0.60
ASTM A 387/A 387M-03
Grade 2
Class 2
K12143 0.05-0.21 0.55-0.80 0.15-0.40 0.035 0.035 0.50-0.80 0.45-0.60


4.4.1B Mechanical Properties of ¾Cr-½Mo Alloy Steels for Pressure Vessel Plates


Section Thickness
Yield Strength, min Tensile Strength, min
Standard
Designation
Grade, Class, Type,
Symbol or Name
Steel
Number
UNS
Number
Heat
Treatment
t, mm t, in.
N/mm
2
or
MPa
ksi
N/mm
2
or
MPa
ksi
Elongation,
min, %
Other
ASTM A 387/A 387M-03 Grade 2 Class 1 K12143 A or NT 230
33
380-550
55-80

22
6 ≤ t ≤ 50
18
SCMV 1 Div 1 A or NT
50 < t ≤ 200

225

380-550

22

6 ≤ t ≤ 50
18
JIS G 4109:1987
SCMV 1 Div 2 NT
50 < t ≤ 200

315

480-620

22

ASTM A 387/A 387M-03 Grade 2 Class 2 K12143 A or NT 310
45
485-620
70-90
22


Chapter 4 Pressure Vessel Steel Plates 122


Handbook of Comparative World Steel Standards
4.4 Cr-Mo Alloy Steels for Pressure Vessel Plates

4.4.2A Chemical Composition of 1Cr-½Mo Alloy Steels for Pressure Vessel Plates

Section Thickness Weight, %, Maximum, Unless Otherwise Specified
Standard
Designation
Grade, Class,
Type, Symbol,
or Name
Steel
Number
UNS
Number
t, mm t, in. C Mn Si P S Cr Ni Mo Others
ASTM A 387/A 387M-03
Grade 12
Class 1
K11757 0.05-0.17 0.40-0.65 0.15-0.40 0.035 0.035 0.80-1.15 0.45-0.60
JIS G 4109:1987 SCMV 2 Div 1 0.17 0.40-0.65 0.40 0.030 0.030 0.80-1.15 0.45-0.60
ASTM A 387/A 387M-03
Grade 12,
Class 2
K11757 0.05-0.17 0.40-0.65 0.15-0.40 0.035 0.035 0.80-1.15 0.45-0.60
JIS G 4109:1987 SCMV 2 Div 2 0.17 0.40-0.65 0.40 0.030 0.030 0.80-1.15 0.45-0.60
EN 10028-2:2003 13CrMo4-5 1.7335 0.08-0.18 0.40-1.00 0.35 0.025 0.010 0.70-1.15 0.40-0.60 Cu 0.30; N 0.012

ISO 9328-2:1991 14 CrMo 4 5 0.08-0.18 0.40-1.00 0.35 0.035 0.030 0.70-1.15 0.40-0.60 Cu 0.30


4.4.2B Mechanical Properties of 1Cr-½Mo Alloy Steels for Pressure Vessel Plates

Section Thickness
Yield Strength, min Tensile Strength, min
Standard
Designation
Grade, Class, Type,
Symbol or Name
Steel
Number
UNS
Number
Heat
Treatment
t, mm t, in.
N/mm
2
or
MPa
ksi
N/mm
2
or
MPa
ksi
Elongation,
min, %

Other
ASTM A 387/A 387M-03 Grade 12 Class 1 K11757 A or NT 230
33
380-550
55-80
22

6 ≤ t ≤ 50
19
JIS G 4109:1987 SCMV 2 Div. 1 A or NT
50 < t ≤ 200

225

380-550

22

ASTM A 387/A 387M-03 Grade 12, Class 2 K11757 A or NT 275
40
450-585
65-85
22
6 ≤ t ≤ 50
18
JIS G 4109:1987 SCMV 2 Div. 2 NT
50 < t ≤ 200

275


450-590

22

≤ 16
300

NT
16 < t ≤ 60
290

450-600

31 J at 20°C
NT
60 < t ≤ 100
270

440-590

27 J at 20°C
NT or QT
100 < t ≤ 150
255

430-580


EN 10028-2:2003 13CrMo4-5 1.7335
QT

150 < t ≤ 250
245

420-570

19

3 ≤ t ≤ 16

16 < t ≤ 40

20
40 < t ≤ 60

300

450-600

19
31 J at 20°C
60 < t ≤ 100
275

440-590

ISO 9328-2:1991 14 CrMo 4 5 NT
100 < t ≤ 150
255

430-580


18
27 J at 20°C

Chapter 4 Pressure Vessel Steel Plates 123


Handbook of Comparative World Steel Standards
4.4 Cr-Mo Alloy Steels for Pressure Vessel Plates

4.4.3A Chemical Composition of 1¼Cr-½Mo Alloy Steels for Pressure Vessel Plates

Section Thickness Weight, %, Maximum, Unless Otherwise Specified
Standard
Designation
Grade, Class,
Type, Symbol,
or Name
Steel
Number
UNS
Number
t, mm t, in. C Mn Si P S Cr Ni Mo Others
JIS G 4109:1987 SCMV 3 Div 1 0.17 0.40-0.65 0.50-0.80 0.030 0.030 1.00-1.50 0.45-0.65
ASTM A 387/A 387M-03
Grade 11
Class 1
K11789 0.05-0.17 0.40-0.65 0.50-0.80 0.035 0.035 1.00-1.50 0.45-0.65
EN 10028-2:2003 13CrMoSi5-5 1.7336 0.17 0.40-0.65 0.50-0.80 0.015 0.005 1.00-1.50 0.30 0.45-0.65 Cu 0.30; N 0.012
ASTM A 387/A 387M-03

Grade 11
Class 2
K11789 0.05-0.17 0.40-0.65 0.50-0.80 0.035 0.035 1.00-1.50 0.45-0.65
JIS G 4109:1987 SCMV 3 Div 2 0.17 0.40-0.65 0.50-0.80 0.030 0.030 1.00-1.50 0.45-0.65


4.4.3B Mechanical Properties of 1¼Cr-½Mo Alloy Steels for Pressure Vessel Plates

Section Thickness
Yield Strength, min Tensile Strength, min
Standard
Designation
Grade, Class, Type,
Symbol or Name
Steel
Number
UNS
Number
Heat
Treatment
t, mm t, in.
N/mm
2
or
MPa
ksi
N/mm
2
or
MPa

ksi
Elongation,
min, %
Other
6 ≤ t ≤ 50
19
JIS G 4109:1987 SCMV 3 Div. 1 A or NT
50 < t ≤ 200

235

410-590

22

ASTM A 387/A 387M-03 Grade 11 Class 1 K11789 A or NT 240
35
415-585
60-85
22
NT
t ≤ 60
310 510-690 20
NT
60 < t ≤ 100
300 480-660 20
QT
t ≤ 60
400 510-690 20
QT

60 < t ≤ 100
390 500-680 20
EN 10028-2:2003 13CrMoSi5-5 1.7336
QT
100 < t ≤ 250
380 490-670 20
see standard for
impact data
ASTM A 387/A 387M-03 Grade 11 Class 2 K11789 A or NT 310
45
515-690
75-100
22
6 ≤ t ≤ 50
18
JIS G 4109:1987 SCMV 3 Div. 2 NT
50 < t ≤ 200

315

520-690

22


Chapter 4 Pressure Vessel Steel Plates 124


Handbook of Comparative World Steel Standards
4.4 Cr-Mo Alloy Steels for Pressure Vessel Plates


4.4.4A Chemical Composition of 2¼Cr-1Mo Alloy Steels for Pressure Vessel Plates

Section Thickness Weight, %, Maximum, Unless Otherwise Specified
Standard
Designation
Grade, Class,
Type, Symbol,
or Name
Steel
Number
UNS
Number
t, mm t, in. C Mn Si P S Cr Ni Mo Others
JIS G 4109:1987 SCMV 4 Div 1 0.17 0.30-0.60 0.50 0.030 0.030 2.00-2.50 0.90-1.10
Grade 22,
Class 1
0.05-0.15
ASTM A 387/A 387M-03
Grade 22 L,
Class 1

K21590
0.10
0.30-0.60 0.50 0.035 0.035 2.00-2.50 0.90-1.10
EN 10028-2:2003 10CrMo9-10 1.7380 0.08-0.14 0.40-0.80 0.50 0.020 0.010 2.00-2.50 0.90-1.10 Cu 0.30; N 0.012
ISO 9328-2:1991 13 CrMo 9 10 T1 0.08-0.15 0.40-0.70 0.50 0.035 0.030 2.00-2.50 0.90-1.10 Cu 0.30
ASTM A 387/A 387M-03
Grade 22,
Class 2

K21590 0.05-0.15 0.30-0.60 0.50 0.035 0.035 2.00-2.50 0.90-1.10
JIS G 4109:1987 SCMV 4 Div 2 0.17 0.30-0.60 0.50 0.030 0.030 2.00-2.50 0.90-1.10
ISO 9328-2:1991 13 CrMo 9 10 T2 0.08-0.15 0.40-0.70 0.50 0.035 0.030 2.00-2.50 0.90-1.10 Cu 0.30
JIS G 4110:1993 SCMQ4E 0.17 0.30-0.60 0.50 0.015 0.015 2.00-2.50 0.90-1.10 V 0.03

Chapter 4 Pressure Vessel Steel Plates 125


Handbook of Comparative World Steel Standards
4.4 Cr-Mo Alloy Steels for Pressure Vessel Plates

4.4.4B Mechanical Properties of 2¼Cr-1Mo Alloy Steels for Pressure Vessel Plates

Section Thickness
Yield Strength, min Tensile Strength, min
Standard
Designation
Grade, Class, Type,
Symbol or Name
Steel
Number
UNS
Number
Heat
Treatment
t, mm t, in.
N/mm
2
or
MPa

ksi
N/mm
2
or
MPa
ksi
Elongation,
min, %
Other
JIS G 4109:1987 SCMV 4 Div 1 A or NT
6 ≤ t ≤ 300
205

410-590

18
Grade 22, Class 1
ASTM A 387/A 387M-03
Grade 22 L, Class 1
K21590 A, or NT 205
30
415-585
60-85
18
≤ 16
310

16 < t ≤ 40
300


NT
40 < t ≤ 60
290

480-630

18
31 J at 20°C
NT or QT
60 < t ≤ 100
280

470-620

100 < t ≤ 150
260

460-610

EN 10028-2:2003 10CrMo9-10 1.7380
QT
150 < t ≤ 250
250

450-600

17
27 J at 20°C
3 ≤ t ≤ 16
275


16 < t ≤ 40

40 < t ≤ 60

265

480-620

18
31 J at 20°C
60 < t ≤ 100
260

470-620

17
100 < t ≤ 150
250

460-610

ISO 9328-2:1991 13 CrMo 9 10 T1 NT
150 < t ≤ 300
240

450-600

16
27 J at 20°C

ASTM A 387/A 387M-03 Grade 22, Class 2 K21590 A or NT 310
45
515-690
75-100
18
JIS G 4109:1987 SCMV 4 Div 2 NT
6 ≤ t ≤ 300
315

520-690

18
3 ≤ t ≤ 16

16 < t ≤ 40

40 < t ≤ 60

18
31 J at 20°C
ISO 9328-2:1991 13 CrMo 9 10 T2 NT
60 < t ≤ 100

310

520-670

17
27 J at 20°C
JIS G 4110:1993 SCMQ4E NT, QT 380 580-760

18
54 J at -18°C

Chapter 4 Pressure Vessel Steel Plates 126


Handbook of Comparative World Steel Standards
4.4 Cr-Mo Alloy Steels for Pressure Vessel Plates

4.4.5A Chemical Composition of 3Cr-1Mo Alloy Steels for Pressure Vessel Plates

Section Thickness Weight, %, Maximum, Unless Otherwise Specified
Standard
Designation
Grade, Class,
Type, Symbol,
or Name
Steel
Number
UNS
Number
t, mm t, in. C Mn Si P S Cr Ni Mo Others
JIS G 4109:1987 SCMV 5 Div 1 0.17 0.30-0.60 0.50 0.030 0.030 2.75-3.25 0.90-1.10
Grade 21,
Class 1
0.05-0.15
Grade 21 L,
Class 1
0.10
ASTM A 387/A 387M-03

Grade 21,
Class 2

K31545
0.05-0.05
0.30-0.60 0.50 0.035 0.035 2.75-3.25 0.90-1.10
JIS G 4109:1987 SCMV 5 Div 2 0.17 0.30-0.60 0.50 0.030 0.030 2.75-3.25 0.90-1.10


4.4.5B Mechanical Properties of 3Cr-1Mo Alloy Steels for Pressure Vessel Plates

Section Thickness
Yield Strength, min Tensile Strength, min
Standard
Designation
Grade, Class, Type,
Symbol or Name
Steel
Number
UNS
Number
Heat
Treatment
t, mm t, in.
N/mm
2
or
MPa
ksi
N/mm

2
or
MPa
ksi
Elongation,
min, %
Other
JIS G 4109:1987 SCMV 5 Div 1 A or NT
6 ≤ t ≤ 300
205

410-590

18
Grade 21, Class 1
Grade 21 L, Class 1
A or NT 205
30
415-585
60-85
18
ASTM A 387/A 387M-03
Grade 21, Class 2
K31545
A or NT 310
45
515-690
75-100
18
JIS G 4109:1987 SCMV 5 Div 2 NT

6 ≤ t ≤ 300
315

520-690

18

Chapter 4 Pressure Vessel Steel Plates 127


Handbook of Comparative World Steel Standards
4.4 Cr-Mo Alloy Steels for Pressure Vessel Plates

4.4.6A Chemical Composition of 5Cr-½Mo Alloy Steels for Pressure Vessel Plates

Section Thickness Weight, %, Maximum, Unless Otherwise Specified
Standard
Designation
Grade, Class,
Type, Symbol,
or Name
Steel
Number
UNS
Number
t, mm t, in. C Mn Si P S Cr Ni Mo Others
JIS G 4109:1987 SCMV 6 Div 1 0.15 0.30-0.60 0.50 0.030 0.030 4.00-6.00 0.45-0.65
K41545
S50100
ASTM A 387/A 387M-03 Grade 5, Class 1

S50200
0.15 0.30-0.60 0.50 0.035 0.030 4.00-6.00 0.45-0.65
EN 10028-2:2003 X12CrMo5 1.7362 0.10-0.15 0.30-0.60 0.50 0.020 0.005 4.00-6.00 0.30 0.45-0.65 Cu 0.30; N 0.012;
K41545
S50100
ASTM A 387/A 387M-03 Grade 5, Class 2
S50200
0.15 0.30-0.60 0.50 0.035 0.030 4.00-6.00 0.45-0.65
JIS G 4109:1987 SCMV 6 Div 2 0.15 0.30-0.60 0.50 0.030 0.030 4.00-6.00 0.45-0.65


4.4.6B Mechanical Properties of 5Cr-½Mo Alloy Steels for Pressure Vessel Plates

Section Thickness
Yield Strength, min Tensile Strength, min
Standard
Designation
Grade, Class, Type,
Symbol or Name
Steel
Number
UNS
Number
Heat
Treatment
t, mm t, in.
N/mm
2
or
MPa

ksi
N/mm
2
or
MPa
ksi
Elongation,
min, %
Other
JIS G 4109:1987 SCMV 6 Div 1 A or NT
6 ≤ t ≤ 300
205

410-590

18
K41545
S50100
ASTM A 387/A 387M-03 Grade 5, Class 1
S50200
A or NT 205
30
415-585
60-85
18
NT
t ≤ 60
320 510-690 20
NT
60 < t ≤ 150

300 480-690 20
EN 10028-2:2003 X12CrMo5 1.7362
QT
150 < t ≤ 250
300 450-690 20
see standard for
impact data
K41545
S50100
ASTM A 387/A 387M-03 Grade 5, Class 2
S50200
A or NT 310
45
515-690
75-100
18
JIS G 4109:1987 SCMV 6 Div 2 NT
6 ≤ t ≤ 300
315

520-690

18

Chapter 4 Pressure Vessel Steel Plates 128


Handbook of Comparative World Steel Standards
4.4 Cr-Mo Alloy Steels for Pressure Vessel Plates


4.4.7A Chemical Composition of 9Cr-1Mo Alloy Steels for Pressure Vessel Plates

Section Thickness Weight, %, Maximum, Unless Otherwise Specified
Standard
Designation
Grade, Class,
Type, Symbol,
or Name
Steel
Number
UNS
Number
t, mm t, in. C Mn Si P S Cr Ni Mo Others
ASTM A 387/A 387M-03 Grade 91 Class 2 K90901 0.08-0.12 0.30-0.60 0.20-0.50 0.020 0.010 8.00-9.50 0.40 0.85-1.05
N 0.030-0.070; Cb 0.06-0.10;
V 0.18-0.25; B 0.0003-0.006;
Al 0.04
EN 10028-2:2003 X10CrMoVNb9-1 1.4903 0.08-0.12 0.30-0.60 0.50 0.020 0.005 8.00-9.50 0.30 0.85-1.05
N 0.030-0.070; Cu 0.30;
Nb 0.6-0.10; V 0.18-0.25
ASTM A 387/A 387M-03 Grade 911 Class 2 0.09-0.13 0.30-0.60 0.10-0.50 0.020 0.010 8.50-10.50 0.40 0.90-1.10
Cb 0.06-0.10; V 0.18-0.25;
Al 0.04; N 0.04-0.09; W 0.90-1.10


4.4.7B Mechanical Properties of 9Cr-1Mo Alloy Steels for Pressure Vessel Plates

Section Thickness
Yield Strength, min Tensile Strength, min
Standard

Designation
Grade, Class, Type,
Symbol or Name
Steel
Number
UNS
Number
Heat
Treatment
t, mm t, in.
N/mm
2
or
MPa
ksi
N/mm
2
or
MPa
ksi
Elongation,
min, %
Other
ASTM A 387/A 387M-03 Grade 91 Class 2 K90901 NT 415
60
585
760
18
NT
t ≤ 60

445 580-760
NT
60 < t ≤ 150
435 550-730
EN 10028-2:2003 X10CrMoVNb9-1 1.4903
QT
150 < t ≤ 250
435 520-700
18
see standard for
impact data
ASTM A 387/A 387M-03 Grade 911 Class 2 NT 440
64
620
840
18

Chapter 4 Pressure Vessel Steel Plates 129


Handbook of Comparative World Steel Standards
4.5 Ni Alloy Steels for Pressure Vessel Plates

4.5.1A Chemical Composition of ½Ni Alloy Steels for Pressure Vessel Plates

Section Thickness Weight, %, Maximum, Unless Otherwise Specified
Standard
Designation
Grade, Class,
Type, Symbol,

or Name
Steel
Number
UNS
Number
t, mm t, in. C Mn Si P S Cr Ni Mo Others
11MnNi5-3 1.6212 0.14 0.70-1.50 0.50 0.025 0.015 0.30-0.80 V 0.05; Nb 0.05; Al 0.020
EN 10028-4:2003
13MnNi6-3 1.6217 0.16 0.85-1.70 0.50 0.025 0.015 0.30-0.85 V 0.05; Nb 0.05; Al 0.020
11 MnNi 5 3
3 ≤ t ≤ 50
0.14 0.70-1.50 0.50 0.030 0.025 0.30-0.80 V 0.05; Nb 0.05; Al 0.020
ISO 9328-3:1991
13 MnNi 6 3
3 ≤ t ≤ 50
0.16 0.85-1.65 0.50 0.030 0.025 0.30-0.85 V 0.05; Nb 0.05; Al 0.020


4.5.1B Mechanical Properties of ½Ni Alloy Steels for Pressure Vessel Plates

Section Thickness
Yield Strength, min Tensile Strength, min
Standard
Designation
Grade, Class, Type,
Symbol or Name
Steel
Number
UNS
Number

Heat
Treatment
t, mm t, in.
N/mm
2
or
MPa
ksi
N/mm
2
or
MPa
ksi
Elongation,
min, %
Other
≤ 30
285

30 < t ≤ 50
275

11MnNi5-3 1.6212 NT
50 < t ≤ 80
265

420-530

24
see standard for

impact data
≤ 30
355

30 < t ≤ 50
345

EN 10028-4:2003
13MnNi6-3 1.6217 NT
50 < t ≤ 80
335

490-610

22
see standard for
impact data
3 < t ≤ 30
285

11 MnNi 5 3 NT
30 < t ≤ 50
275

420-530

24
see standard for
impact data
3 < t ≤ 30

355

ISO 9328-3:1991
13 MnNi 6 3 NT
30 < t ≤ 50
345

490-610

22
see standard for
impact data

Chapter 4 Pressure Vessel Steel Plates 130


Handbook of Comparative World Steel Standards
4.5 Ni Alloy Steels for Pressure Vessel Plates

4.5.2A Chemical Composition of 1½Ni Alloy Steels for Pressure Vessel Plates

Section Thickness Weight, %, Maximum, Unless Otherwise Specified
Standard
Designation
Grade, Class,
Type, Symbol, or
Name
Steel
Number
UNS

Number
t, mm t, in. C Mn Si P S Cr Ni Mo Others
EN 10028-4:2003 15NiMn6 1.6228 0.18 0.80-1.50 0.35 0.025 0.015 1.30-1.70 V 0.05
ISO 9328-3:1991 15 NiMn 6
3 ≤ t ≤ 50
0.18 0.80-1.50 0.35 0.025 0.020 1.30-1.70 V 0.05


4.5.2B Mechanical Properties of 1½Ni Alloy Steels for Pressure Vessel Plates

Section Thickness
Yield Strength, min Tensile Strength, min
Standard
Designation
Grade, Class, Type,
Symbol or Name
Steel
Number
UNS
Number
Heat
Treatment
t, mm t, in.
N/mm
2
or
MPa
ksi
N/mm
2

or
MPa
ksi
Elongation,
min, %
Other
≤ 30
355

30 < t ≤ 50
345

EN 10028-4:2003 15NiMn6 1.6228
N or NT or
QT
50 < t ≤ 80
335

490-640

22
see standard for
impact data
3 < t ≤ 30
355

ISO 9328-3:1991 15 NiMn 6
N or NT or
QT
30 < t ≤ 50

345

490-640

22
see standard for
impact data

Chapter 4 Pressure Vessel Steel Plates 131


Handbook of Comparative World Steel Standards
4.5 Ni Alloy Steels for Pressure Vessel Plates

4.5.3A Chemical Composition of 2¼Ni Alloy Steels for Pressure Vessel Plates

Section Thickness Weight, %, Maximum, Unless Otherwise Specified
Standard
Designation
Grade, Class,
Type, Symbol,
or Name
Steel
Number
UNS
Number
t, mm t, in. C Mn Si P S Cr Ni Mo Others
JIS G 3127:2000 SL2N255
6 ≤ t ≤ 50
0.17 0.70 0.30 0.025 0.025 2.10-2.50

≤ 50 ≤ 2
0.17 0.70 0.15-0.40 0.035 0.035 2.10-2.50
50 < t ≤ 100 2 < t ≤ 4
0.20 0.80 0.15-0.40 0.035 0.035 2.10-2.50
A K21703
> 100 > 4 0.23 0.80 0.15-0.40 0.035 0.035 2.10-2.50
≤ 50 ≤ 2
0.21 0.70 0.15-0.40 0.035 0.035 2.10-2.50
50 < t ≤ 100 2 < t ≤ 4
0.24 0.80 0.15-0.40 0.035 0.035 2.10-2.50
ASTM A 203/A 203M-97 (2003)
B K22103
> 100 > 4 0.25 0.80 0.15-0.40 0.035 0.035 2.10-2.50


4.5.3B Mechanical Properties of 2¼Ni Alloy Steels for Pressure Vessel Plates

Section Thickness
Yield Strength, min Tensile Strength, min
Standard
Designation
Grade, Class, Type,
Symbol or Name
Steel
Number
UNS
Number
Heat
Treatment
t, mm t, in.

N/mm
2
or
MPa
ksi
N/mm
2
or
MPa
ksi
Elongation,
min, %
Other
6 ≤ t ≤ 16
24
> 16 29
JIS G 3127:1990 SL2N255 N
> 20
255

450-590

24
see standard for
impact data
≤ 50 ≤ 2
A K21703 N
> 50 > 2
255
37

450-585
65-85
23
≤ 50 ≤ 2
ASTM A 203/A 203M-97 (2003)
B K22103 N
> 50 > 2
275
40
485-620
70-90
21