1 According to EN 10028-4:2003 and JIS G 3127-2005 standard grades.
2 Standards grade Table 1.
Table 1
|
Standards No.
|
Grade
|
|
GBT
|
0.5NiA、0.5NiB、1.5Ni、2Ni、3Ni255、3Ni275、3Ni440、
3.5Ni、5Ni、9Ni、9Ni590、9Ni520
|
|
CCS
|
0.5NiA、0.5NiB、1.5Ni、3.5Ni、5Ni、9Ni
|
|
DNV
|
1.5Ni、3.5Ni、5Ni、9Ni
|
|
LR
|
1.5Ni、3.5Ni、5Ni、9Ni
|
|
EN 10028-4：2003
|
11MnNi5-3、13MnNi6-3、15NiMn6、12Ni14、X12Ni5、X8Ni9、X7Ni9
|
|
JIS G 3127-2005
|
SL2N255、SL3N255、SL3N275、SL3N440、SL5N590、SL9N520、SL9N590
|
3Chemical composition (cast analysis)
Table 2
|
Standard
|
Grade
|
Chemical composition % by mass
|
|||||||||||
|
C
|
Si
|
Mn
|
Ni
|
Cr
≤
|
Cu
≤
|
Nb
≤
|
V
≤
|
Mo
≤
|
Als
≥
|
P
|
S
|
||
|
Maximum
|
|||||||||||||
|
GBT
|
0.5NiA
|
≤0.14
|
0.10～0.50
|
0.70～1.60
|
0.30～0.80
|
0.25
|
0.35
|
0.05
|
0.05
|
0.08
|
0.015
|
0.015
|
0.010
|
|
CCS
|
0.5NiA
|
≤0.14
|
0.10～0.50
|
0.70～1.60
|
0.30～0.80
|
0.25
|
0.35
|
--
|
--
|
0.08
|
0.015
|
0.025
|
0.020
|
|
EN 10028-4
|
11MnNi5-3
|
≤0.14
|
≤0.50
|
0.70～1.50
|
0.30～0.80
|
--
|
--
|
0.05
|
0.05
|
--
|
0.015
|
0.025
|
0.015
|
|
13MnNi6-3
|
≤0.16
|
≤0.50
|
0.85～1.70
|
0.30～0.85
|
--
|
--
|
0.05
|
0.05
|
--
|
0.015
|
0.025
|
0.015
|
|
|
GBT
|
0.5NiB
|
≤0.16
|
0.10～0.50
|
0.70～1.60
|
0.50～0.80
|
0.25
|
0.35
|
0.05
|
0.05
|
0.08
|
0.015
|
0.015
|
0.010
|
|
CCS
|
0.5NiB
|
≤0.16
|
0.10～0.50
|
0.70～1.60
|
0.50～0.80
|
0.25
|
0.35
|
--
|
--
|
0.08
|
0.015
|
0.025
|
0.020
|
|
GBT
|
1.5Ni
|
≤0.14
|
0.10～0.35
|
0.30～1.50
|
1.30～1.70
|
0.25
|
0.35
|
0.05
|
0.05
|
0.08
|
0.015
|
0.015
|
0.010
|
|
CCS
|
1.5Ni
|
≤0.14
|
0.10～0.35
|
0.30～1.50
|
1.30～1.70
|
0.25
|
0.35
|
--
|
--
|
0.08
|
0.015
|
0.025
|
0.020
|
|
DNV
|
1.5Ni
|
≤0.14
|
0.10～0.35
|
0.30～1.50
|
1.30～1.70
|
--
|
--
|
--
|
--
|
--
|
0.013
|
0.025
|
0.025
|
|
LR
|
1.5Ni
|
≤0.18
|
0.10～0.35
|
0.30～1.50
|
1.30～1.70
|
0.25
|
0.35
|
--
|
--
|
0.08
|
0.015
|
0.025
|
0.020
|
|
EN 10028-4
|
15NiMn6
|
≤0.18
|
≤0.35
|
0.80～1.50
|
1.30～1.70
|
--
|
--
|
--
|
0.05
|
--
|
--
|
0.025
|
0.015
|
|
GBT
|
2Ni
|
≤0.17
|
≤0.30
|
≤0.70
|
2.10～2.50
|
0.25
|
0.35
|
0.08
|
0.05
|
0.08
|
0.015
|
0.015
|
0.010
|
|
3Ni255
3Ni275
3Ni440
|
≤0.15
≤0.17
≤0.15
|
≤0.30
|
≤0.70
|
3.25～3.75
|
0.25
|
0.35
|
0.08
|
0.05
|
0.08
|
0.015
|
0.015
|
0.010
|
|
|
JIS G 3127
|
2Ni255
|
≤0.17
|
≤0.30
|
≤0.70
|
2.10～2.50
|
--
|
--
|
--
|
--
|
--
|
--
|
0.025
|
0.025
|
|
3Ni255
3Ni275
3Ni440
|
≤0.15
≤0.17
≤0.15
|
≤0.30
|
≤0.70
|
3.25～3.75
|
--
|
--
|
--
|
--
|
--
|
--
|
0.025
|
0.025
|
|
|
GBT
|
3.5Ni
|
≤0.12
|
0.10～0.35
|
0.30～0.80
|
3.25～3.75
|
0.25
|
0.35
|
0.08
|
0.05
|
0.08
|
0.015
|
0.015
|
0.010
|
|
CCS
|
3.5Ni
|
≤0.12
|
0.10～0.35
|
0.30～0.80
|
3.20～3.80
|
0.25
|
0.35
|
--
|
--
|
0.08
|
0.015
|
0.025
|
0.020
|
|
DNV
|
3.5Ni
|
≤0.12
|
0.10～0.35
|
0.30～0.70
|
3.25～3.75
|
--
|
--
|
--
|
--
|
--
|
0.013
|
0.025
|
0.025
|
|
LR
|
3.5Ni
|
≤0.15
|
0.10～0.35
|
0.30～0.90
|
3.20～3.80
|
0.25
|
0.35
|
--
|
--
|
0.08
|
0.015
|
0.025
|
0.020
|
|
EN 10028-4
|
12Ni14
|
≤0.15
|
≤0.35
|
0.30～0.80
|
3.25～3.75
|
--
|
--
|
--
|
0.05
|
--
|
--
|
0.020
|
0.010
|
|
GBT
|
5Ni
|
≤0.12
|
0.10～0.35
|
0.30～0.90
|
4.70～5.30
|
0.25
|
0.35
|
0.08
|
0.05
|
0.08
|
0.015
|
0.015
|
0.010
|
|
5Ni590
|
≤0.13
|
≤0.30
|
≤1.50
|
4.75～6.00
|
0.25
|
0.35
|
0.08
|
0.05
|
0.08
|
0.015
|
0.015
|
0.010
|
|
|
CCS
|
5Ni
|
≤0.12
|
0.10～0.35
|
0.30～0.90
|
4.70～5.30
|
0.25
|
0.35
|
|
|
0.08
|
0.015
|
0.025
|
0.020
|
|
DNV
|
5Ni
|
≤0.12
|
0.10～0.35
|
0.30～0.80
|
4.70～5.30
|
--
|
--
|
--
|
--
|
--
|
0.013
|
0.025
|
0.025
|
|
LR
|
5Ni
|
≤0.12
|
0.10～0.35
|
0.30～0.90
|
4.70～5.30
|
0.25
|
0.35
|
--
|
--
|
0.08
|
0.015
|
0.025
|
0.020
|
|
EN 10028-4
|
X12Ni5
|
≤0.15
|
≤0.35
|
0.30～0.80
|
4.75～5.25
|
--
|
--
|
--
|
0.05
|
--
|
--
|
0.020
|
0.010
|
|
JIS G 3127
|
5Ni590
|
≤0.13
|
≤0.30
|
≤1.50
|
4.75～6.00
|
--
|
--
|
--
|
--
|
--
|
--
|
0.025
|
0.025
|
|
GBT
|
9Ni
|
≤0.10
|
0.10～0.35
|
0.30～0.90
|
8.50～10.0
|
0.25
|
0.35
|
0.08
|
0.05
|
0.08
|
0.015
|
0.010
|
0.010
|
|
9Ni520
9Ni590
|
≤0.12
|
≤0.30
|
≤0.90
|
8.50～9.50
|
0.25
|
0.35
|
0.08
|
0.05
|
0.08
|
0.015
|
0.010
|
0.010
|
|
|
CCS
|
9Ni
|
≤0.10
|
0.10～0.35
|
0.30～0.90
|
8.50～10.0
|
0.25
|
0.35
|
--
|
--
|
0.08
|
0.015
|
0.025
|
0.020
|
|
DNV
|
9Ni
|
≤0.10
|
0.10～0.35
|
0.30～0.90
|
8.50～10.0
|
--
|
--
|
--
|
--
|
--
|
0.013
|
0.025
|
0.025
|
|
LR
|
9Ni
|
≤0.10
|
0.10～0.35
|
0.30～0.90
|
8.50～10.0
|
0.25
|
0.35
|
--
|
--
|
0.08
|
0.015
|
0.025
|
0.020
|
|
EN 10028-4
|
X8Ni9
|
≤0.10
|
≤0.35
|
0.30～0.80
|
8.50～10.0
|
--
|
--
|
--
|
0.05
|
--
|
0.1
|
0.020
|
0.010
|
|
X7Ni9
|
≤0.10
|
≤0.35
|
0.30～0.80
|
8.50～10.0
|
--
|
--
|
--
|
0.01
|
--
|
0.1
|
0.015
|
0.005
|
|
|
JIS G 3127
|
9Ni520
9Ni590
|
≤0.12
|
≤0.30
|
≤0.90
|
8.50～9.50
|
--
|
--
|
--
|
--
|
--
|
--
|
0.025
|
0.025
|
|
Notice:1：CCS、LR：Cr+Mo+Cu≤0.60%。
Notice: 2：EN 10028-4：Cr+Mo+Cu≤0.50%。
|
|||||||||||||
4 Steelmaking process：
EAF+LF+VOD
5 Delivery condition：
1.1.1.1 Table 3
|
Grade
|
Delivery conditiona
|
|
0.5NiA、0.5NiB、1.5Ni、2Ni255、3Ni255、
3Ni275、3Ni400、3.5Ni、5Ni、9Ni590
|
N、N+T、TMCP or Q+T
|
|
9Ni
|
Twice N+T or Q+T
|
|
9Ni520
|
Twice N+T
|
|
a Recommend Tempering at temperature: 540℃～600℃。
|
|
|
For product thickness ≤15 mm, delivery conditions +N plus +NT are also applicable.
|
|
6 Mechanical properties
6.1 Yield strength
Table 4
|
GBT
|
classification society rules
|
EN10028-4
|
|||
|
Grade
|
Yield strength
MPa min.
|
Grade
|
Yield strength
MPa min.
|
Grade
|
Yield strength
MPa min.
|
|
0.5NiA
|
285
|
CCS--0.5NiA
|
285
|
11MnNi5-3
|
285
|
|
1.5Ni
|
275
|
CCS、DNV--1.5Ni
|
275
|
15NiMn6
|
355
|
|
3.5Ni
|
345
|
CCS--3.5Ni
DNV--3.5Ni
LR--3.5Ni
|
345
345
285
|
12Ni14
|
355
|
|
5Ni
|
390
|
CCS--5Ni
DNV--5Ni
LR--5Ni
|
390
|
X12Ni5
|
390
|
|
9Ni
|
490
|
CCS--9Ni
DNV--5Ni
LR--5Ni
|
490
|
X8Ni9
|
490
|
|
|
|
JIS G
|
|
|
|
|
9Ni520
9Ni590
|
520
590
|
9Ni520
9Ni590
|
520
590
|
X8Ni9
X7Ni9
|
585
|
6.2 Tensile strength
Table 5
|
GBT
|
classification society rules
|
EN10028-4
|
|||
|
Grade
|
Tensile strength MPa
|
Grade
|
Tensile strength MPa
|
Grade
|
Tensile strength MPa
|
|
0.5NiA
|
420--530
|
CCS--0.5NiA
|
400--530
|
11MnNi5-3
|
420--530
|
|
1.5Ni
|
490--640
|
CCS、DNV--1.5Ni
|
470--640
|
15NiMn6
|
490--640
|
|
3.5Ni
|
490--690
|
CCS--3.5Ni
DNV--3.5Ni
LR--3.5Ni
|
440--690
540--690
450--610
|
12Ni14
|
490--640
|
|
5Ni
|
540--710
|
CCS--5Ni
DNV--5Ni
LR--5Ni
|
520--710
570--710
540--740
|
X12Ni5
|
530--710
|
|
9Ni
|
640--830
|
CCS--9Ni
DNV--5Ni
LR--5Ni
|
640--830
640--840
640--790
|
X8Ni9
|
640--840
|
|
|
|
JISG
|
|
|
|
|
9Ni520
9Ni590
|
690--830
|
9Ni520
9Ni590
|
690--830
|
X8Ni9
X7Ni9
|
680--820
|
7 Minimum impact energy values (valid for V-notched test pieces)
8. Annex A
Compared grades
|
Standard
|
GBT
|
EN 10028
-4:2003
|
JIS G 3127-2005
|
CCS 2007
|
DNV 2007
|
LR
2007
|
ASME A553
-2006
|
|
Grade
|
0.5NiA
|
11MnNi5-3
|
|
0.5NiA
|
|
|
|
|
0.5NiB
|
13MnNi6-3
|
|
0.5NiB
|
|
|
|
|
|
1.5Ni
|
15NiMn6
|
|
1.5Ni
|
1.5Ni
|
1.5Ni
|
|
|
|
2Ni
|
|
SL2N255
|
|
|
|
|
|
|
3Ni255
3Ni275
3Ni400
|
|
SL3N255
SL3N275
SL3N440
|
|
|
|
|
|
|
3.5Ni
|
12Ni14
|
|
3.5Ni
|
3.5Ni
|
3.5Ni
|
|
|
|
5Ni
|
X12Ni5
|
SL5N590
|
5Ni
|
5Ni
|
5Ni
|
|
|
|
9Ni
|
X8Ni9
|
|
9Ni
|
9Ni
|
9Ni
|
|
|
|
9Ni520
9Ni590
|
X8Ni9
X7Ni9
|
SL9N520
SL9N590
|
|
|
|
TypeⅠ
TypeⅡ
|