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STANDARD
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STEEL GRADE
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API
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API 2H Gr50,API 2W Gr50,API 2W Gr50T,API 2W Gr60,API 2Y Gr60
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BS 7191
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355D,355E,355EM,355EMZ
450D,450E,450EM,450EMZ
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EN10225
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S355G2+N,S355G5+M,S355G3+N,S355G6+M,S355G7+N,S355G7+M,
S355G8+M,S355G8+N,S355G9+N,S355G9+M,S355G10+M,
S355G10+N,S420G1+Q,S420G2+Q,S460G1+Q,S460G2+Q
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ASTM
A131/A131M
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A131 Grade A, A131 Grade B, A131 Grade D, A131 Grade E,
A131 Grade AH32,A131Grade AH36, A131 Grade AH40,
A131 Grade DH32, A131 Grade DH36,A131 Grade DH40,
A131 Grade EH32, A131Grade EH36, A131 Grade EH40,
A131 Gr FH32, A131 Gr FH36, A131 Gr FH40
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API 2HGr42, 2HGr50, 2WGr50, 2WGr60, 2YGr50, 2YGr60 chemical composition
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Grade
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C max
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Si
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Mn
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P max
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S max
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Nb max
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Ti max
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Al
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N max
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Ni
max
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Cr
max
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Mo
max
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Cu
max
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B
max
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2HGR42
|
0.18
|
0.05-
0.40
|
0.90-1.35
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0.030
|
0.010
|
0.04
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0.020
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0.02-
0.06
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0.012
|
|
|
|
|
|
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2HGR50
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0.18
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0.05-
0.40
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1.15-1.60
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0.030
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0.010
|
0.10-
0.04
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0.020
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0.02-
0.06
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0.012
|
|
|
|
|
|
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2WGR50
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0.16
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0.05-
0.50
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1.15-1.60
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0.030
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0.010
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0.015
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0.015-0.055
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0.012
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0.75
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0.25
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0.08
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0.35
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0.0005
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2WGR60
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0.16
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0.05-
0.50
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1.15-1.60
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0.030
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0.010
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0.015
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0.015-0.055
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0.012
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1.0
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0.25
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0.15
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0.35
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0.0005
|
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2YGR50
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0.12
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0.05-
0.50
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1.15-1.60
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0.030
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0.010
|
0.03
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0.003-0.20
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0.015-0.055
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0.012
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0.75
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0.25
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0.08
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0.35
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0.0005
|
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2YGR60
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0.12
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0.05-
0.50
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1.15-1.60
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0.030
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0.010
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0.03
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0.003-0.20
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0.015-0.055
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0.012
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1.0
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0.25
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0.15
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0.35
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0.0005
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Mechanical Property and delivery condition
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Grade
|
Rm (MPa)
|
Re(MPa) min
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Delivery condition
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2HGR42
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427-565
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289
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N
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2HGR50
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483-620
|
345
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N
|
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2WGR50
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400-520
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235
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TMCP
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2WGR60
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400-520
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235
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TMCP
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2YGR50
|
448 min
|
345-517
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Q & T
|
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2YGR60
|
517 min
|
414-621
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Q & T
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Carbon equivalent
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Grade
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Thickness of plates
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EC max
|
|
2HGR42
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≤63.5mm/2.5 in
|
0.43
|
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＞63.5/2.5 in
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0.45
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2HGR50
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≤50.8mm/2 in
|
0.43
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＞50.8/2 in
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0.45
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2WGR50
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≤40mm/1.5 in
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0.39
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＞40mm/1.5 in-90mm/3.5in
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0.41
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＞90mm/3.5in-150mm/4 in
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0.43
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2WGR60
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≤40mm/1.5 in
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0.42
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＞40mm/1.5 in-100mm/4in
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0.45
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2YGR50
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≤40mm/1.5 in
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0.39
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＞40mm/1.5 in-90mm/3.5in
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0.41
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＞90mm/3.5in-150mm/4 in
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0.43
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2YGR60
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≤40mm/1.5 in
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0.42
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＞40mm/1.5 in-100mm/4in
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0.45
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Impact Test and Energy
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Grade
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Items
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Sample Size in.
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Sample Size mm
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Min Energy ft-lb(J)
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Unit Min Energy ft-lb(J)
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Test temperature °F(°C）
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2HGr42
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A
|
0.394*0.394
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10*10
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25(34)
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20(27)
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-40(-40)
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B
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0.295*0.394
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7.5*10
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25(34)
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20(27)
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40(-40)
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C
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0.197*0.394
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5.0*10
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25(34)
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20(27)
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40(-40)
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D
|
0.295*0.394
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7.5*10
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19(26)
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15(20)
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50(-46)
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E
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0.197*0.394
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5.0*10
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13(18)
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10(14)
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80(-62)
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2HGr50
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A
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0.394*0.394
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10*10
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30(41)
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25(34)
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-40(-40)
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B
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0.295*0.394
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7.5*10
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30(41)
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25(34)
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40(-40)
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C
|
0.197*0.394
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5.0*10
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30(41)
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25(34)
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40(-40)
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D
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0.295*0.394
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7.5*10
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23(31)
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19(26)
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50(-46)
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E
|
0.197*0.394
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5.0*10
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15(20)
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13(18)
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80(-62)
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2WGr50 and 2YGr50
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A
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0.394*0.394
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10*10
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30(41)
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25(34)
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-40(-40)
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B
|
0.295*0.394
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7.5*10
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30(41)
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25(34)
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40(-40)
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C
|
0.197*0.394
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5.0*10
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30(41)
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25(34)
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40(-40)
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D
|
0.295*0.394
|
7.5*10
|
23(31)
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19(26)
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50(-46)
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E
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0.197*0.394
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5.0*10
|
15(20)
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13(18)
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80(-62)
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2WGr60 and 2YGr60
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A
|
0.394*0.394
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10*10
|
35(48)
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30(41)
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-40(-40)
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B
|
0.295*0.394
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7.5*10
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35(48)
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30(41)
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40(-40)
|
|
C
|
0.197*0.394
|
5.0*10
|
35(48)
|
30(41)
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40(-40)
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|
D
|
0.295*0.394
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7.5*10
|
26(35)
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23(31)
|
50(-46)
|
|
E
|
0.197*0.394
|
5.0*10
|
18(24)
|
15(20)
|
80(-62)
|
|
API 2H Grade 50 was originally designed for the use in production for offshore fixed and floating production platforms where strength and material integrity is required in several dimensions. API 2H Grade 50 is regulated by the American Petroleum Institute and in some cases certified by ABS (American Bureau of Shipbuilding). API 2H Grade 50 been adapted in many other applications.
API 2H Grade 50 is an intermediate-strength, normalized, structural-steel plate used in the welded construction of offshore structures in critical portions. API 2H Grade 50 has exhibit higher impact toughness and resistance to fatigue loading. API 2H Grade 50 is regulated by the American Petroleum Institute and in some cases, certified by ABS (American Bureau of Shipbuilding).
API-2H Steel Plate (Grade 50, with Supplements) Also, API-2Y-60 Steel Plate
Supplement 1 - Ultrasonically tested to SA-578 Level II.
Supplement 3 - Physicals, tested per plate.
Supplement 4 - Through Thickness Tensile Test (Z directional).
Supplement 5 - .006 Max Sulphur, with Inclusion Shape Control.
Supplement 12 - Notch Toughness using drop weight - 5/8 inch and thicker.
REFERENCE: API-2H Steel Plate Grade 50, also dual certified and triple certified to
corresponding grades of ASTM A633 Steel Grade C, ASTM A131 Steel, ABS Steel Grades DH36/EH36,
as well as to ASTM SA537 Class I, Normalized (modified) and Mil-S-22698.
3/8 inch through 4 inches thickness in 96 to 150 inch widths, and lengths up to 600" long
API-2MT1 Steel Plate
As Rolled Steel Plate with Improved Toughness
ABS AMERICAN BUREAU OF SHIPPING SHIPBUILDING AND NAVAL STEEL PLATE
A-36/ABS Grade AH36, ABS Grade DH36 and ABS Grade EH36
HY80 and HY100 MILITARY AND NAVAL GRADE STEEL PLATE
Military (MILSPEC MIL-S-16216-K) Grade Steel Plate
3/16 inch through 4 inch thickness in up to 120 inch widths and 480 inch lengths.
API 2H Grade 42, API-2H-42, API-2H Grade-42
API 2H Grade 50, API-2H-50, API-2H Grade-50
API 2W Grade 42, API-2W-42, API-2W Grade-42
API 2W Grade 50, API-2W-50, API-2W Grade-50
API 2W Grade 50T, API-2W-50T, API-2W Grade-50T
API 2W Grade 60, API-2W-60, API-2W Grade-60
API 2Y Grade 50, API-2Y-50, API-2Y Grade-50
API 2Y Grade 60, API-2Y-60, API-2Y Grade-60
Standard of API, EN10025, BS 7191, ASTM, ASME, offshore platform steel plates whose grades are API 2H Gr50, API 2W Gr50, API 2W Gr50T, API 2W Gr60, API 2Y Gr60, S355 G2N, S355 G3N, S355 G5M, S355 G6M, S355 G7N, S355 G7M, S355 G8M, S355 G8N, S355 G9N, S355 G9M,S420 G1Q, S420 G2Q, S460 G1Q, S460 G2Q, A131 Gr A, A131 Gr B, A131 GrD, A131 GrE, A131 AH32, A131 AH36, A131 AH40, A131 DH32, A131 DH36, A131 DH40, A131 EH32, A131 EH36, A131 EH40, A131 FH32, A131 FH36, A131 FH40.
1. Delivery condition : CR, T, N, TMCP, QT, NT, UT, Z15, Z25, Z35, HIC, PWHT, IMPACT TEST, etc.
2.Thickness：3-650mm,1000-4500mm,length:5000-12000mm
European British German Norwegian American
Plates
EN10225 BS7191 Werkstoff Norsok M-120 API
S355G2+n 355d 1.8801+n – –
S355G3+n 355e 1.8802+n – –
S355G5+m 355d 1.8804+m – –
S355G6+m 355e 1.8805+m – –
S355G7+n 355em 1.8808+n – 2h Gr. 50
S355G7+m 355em 1.8808+m – 2w Gr. 50/50T
S355G8+n 355emZ 1.8810+n y21 S355n3 2h Gr. 50
S355G8+m 355emZ 1.8810+m y21 S355m3 2w Gr. 50/50T
S355G9+n – 1.8811+n y25 S355n4 –
S355G9+m – 1.8811+m y25 S355m4 –
S355G10+n – 1.8813+n y20 S355n4z –
S355G10+m – 1.8813+m y20 S355m4z –
S420G1+Q – 1.8830+Q y35 S420Q3 2y Gr. 60
S420G1+m – 1.8830+m y35 S420m3 2w Gr. 60
S420G2+Q – 1.8857+Q y30 S420Q3z 2y Gr. 60
S420G2+m – 1.8857+m y30 S420m3z 2w Gr. 60
S460G1+Q 450em 1.8878+Q y45 S460Q3 2y Gr. 60
S460G1+m 450em 1.8878+m y45 S460m3 2w Gr. 60
S460G2+Q 450emZ 1.8887+Q y40 S460Q3z 2y Gr. 60
S460G2+m 450emZ 1.8887+m y40 S460m3z 2w Gr. 60
Sections
EN10225 BS7191 Werkstoff Norsok M-120 API
S355G1 355d 1.8814 y03 S355n1 –
S355G1 (+n) 355d 1.8814 (+n) y03 S355n1 –
S355G4 355d 1.8803 – –
S355G4 (+m) 355d 1.8803 (+m) – –
S355G11 355em 1.8806 – –
S355G11+n 355em 1.8806 +n y26 S355n3 2h Gr. 50
S355G11+m 355em 1.8806 +m y26 S355m3 2w Gr. 50/50T
S355G12 355emZ 1.8809 – –
S355G12 +n 355emZ 1.8809 +n y21 S355n3 2h Gr. 50
S355G12 +m 355emZ 1.8809 +m y21 S355m3 2w Gr. 50/50T
S420G3 – 1.8851 – –
S420G3 +m – 1.8851 +m y36 S420m3 2w Gr. 60
S420G4 – 1.8859 – –
S420G4 +m – 1.8859 +m y31 S420m3z 2w Gr. 60
S460G3 – 1.8883 – –
S460G3 +m – 1.8883 +m y46 S460m3 2w Gr. 60
S460G4 – 1.8889 – –
S460G4 +m – 1.8889 +m y41 S460m3z 2w Gr. 60
Hollow Sections
EN10225 BS7191 Werkstoff Norsok M-120 API
S355G14 – – – X52
Inspection & Approval Certificates : C/W Certificate (Calibration Works Certificate) EN 10204 3.1 / DIN 50049 3.1 / ISO 10474 3.1 Mill Test Certificate, NACE MR-0103 / NACE MR-0175 / ISO 15156, CE Marked, European Pressure Equipment Directive PED-97/23/EC, AD-2000-WO, ASME Boiler & Pressure Vessel Code Sec.II Part A Ed. 2008, API 6A (American Petroleum Institute), with 3.2 certificate duly Certified & Approved by LRS (Lloyd's Register), GL (Germanischer Lloyd), BV (Bureau Veritas), DNV (Det Norske Veritas), ABS (American Bureau of Shipping), SGS, TUV, RINA, IRS, NORSOK Approved Standard M-630, M-650 Rev.3
