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ISO/TR 15608 ISO/TR 15608 Material Group 11.1

ISO/TR 15608 Material Group 11.1: Higher carbon steels with carbon (0,30 ≤ C ≤ 0,35% c) and with following analysis:

Si ≤ 0,60%; Mn ≤ 1,8%; Mo ≤ 0,70%c; S ≤ 0,045%; P ≤ 0,045%; Cu ≤ 0,40%c; Ni ≤ 0,5%c; Cr ≤ 0,3%; (0,4% for castings; Nb ≤0,06%; V ≤ 0,1%c; Ti ≤0,05%;

Remarks:
c A higher value is accepted, provided Cr+Mo+Ni+Cu+V ≤ 1,00%

Higher carbon steels acc. ISO/TR 15608 Material Group 11.1

Carbon steels are commonly used in the manufacturing of many products and structures due to its high strength and low cost. Steels with higher carbon contents generally also contain other strength-enhancing elements, such as manganese.

What is the effect of carbon content on carbon steel?

Carbon is the most important factor in determining the mechanical properties of steel. As the carbon content increases, hardness increases, while plasticity and toughness decrease. Weldability also decreases with increasing carbon content due to martensite formation, especially with a carbon content of over 0.25 %. Steels are at risk of cracking during welding if martensite forms in the heat-affected zone (HAZ) due to rapid cooling.

The carbon equivalent (CE) when welding higher carbon steels

The decisive factor for good weldability is the carbon equivalent (CE), which can be calculated using the formula: CEV=C+Mn/6+(Cr+Mo+V)/5, +(Ni+Cu)/15. The carbon equivalent (CE) in steels is a numerical value used to assess the weldability and hardenability of a specific steel composition. The carbon equivalent is especially important in welding applications because it helps estimate the risk of cracking in the heat-affected zone (HAZ) of a weld joint and can help to determine the preheating temperature.

NameNumberStandardProductRemarks
C35E1.1181EN 10269Fasteners
35B21.5511EN 10269Fasteners
CASTM A-738PlateASME BPVC
ASTM A-36Plate, bar & shapeASME BPVC
CE55
E55
K02202
K02202
ASTM A-671
ASTM A-672
Fusion welded pipe
Fusion welded pipe
ASME BPVC
ASME BPVC
CE60
E60
K02402
K02402
ASTM A-671
ASTM A-672
Fusion welded pipe
Fusion welded pipe
ASME BPVC
ASME BPVC
K02506ASTM A-727ForgingASME BPVC
70
CC70
C70
K02700
K02700
K02700
ASTM A-516
ASTM A-671
ASTM A-672
Plate
Fusion welded pipe
Fusion welded pipe
ASME BPVC
ASME BPVC
ASME BPVC
SA283 D
D
K02702
K02702
ASTM A-134
ASTM A-283
Plate
Plate
ASME BPVC
ASME BPVC
EK02704ASTM A-414SheetASME BPVC
A-1
B2
K02707
K02707
ASTM A-210
ASTM A-556
Smls. tube
Smls. tube
ASME BPVC
ASME BPVC
DK02709ASTM A-178E.R.W. tubeASME BPVC
60
65
CB65
B65

K02800
K02800
K02800
ASTM A-515
ASTM A-515
ASTM A-671
ASTM A-672
Plate t > 25 mm
Plate
Fusion welded pipe
Fusion welded pipe
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
SA285 C
C
CA55
A55
K02801
K02801
K02801
K02801
ASTM A-134
ASTM A-515
ASTM A-671
ASTM A-672
Welded pipe
Plate
Fusion welded pipe
Fusion welded pipe
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
A
CK75
N75
K02803
K02803
K02803
ASTM A-299
ASTM A-671
ASTM A-672
Plate
Fusion welded pipe
Fusion welded pipe
ASME BPVC
ASME BPVC
ASME BPVC
B
A
B
K03000
K03000
K03000
ASTM A-500
ASTM A-501
ASTM A-501
Smls. & welded tube
Smls. & welded tube
Smls. & welded tube
ASME BPVC
ASME BPVC
ASME BPVC
70
CB70
B70
K03101
K03101
K03101
ASTM A-515
ASTM A-671
ASTM A-672
Plate
Fusion welded pipe
Fusion welded pipe
ASME BPVC
ASME BPVC
ASME BPVC
AK03002ASTM A-372ForgingASME BPVC
BK03003ASTM A-139Welded pipeASME BPVC
CK03004ASTM A-139Welded pipeASME BPVC
E, B
F
S, B
K03005
K03005
K03005
ASTM A-53
ASTM A-53
ASTM A-53
Resistance welded pipe
Furnace welded pipe
Smls. pipe
ASME BPVC
ASME BPVC
ASME BPVC
B
WPB
6
FPB
WPL6
C2
K03006
K03006
K03006
K03006
K03006
K03006
ASTM A-106
ASTM A-253
ASTM A-333
ASTM A-369
ASTM A-420
ASTM A-556
Smls. pipe
Fitting
Smls. & welded pipe
Forged pipe
Piping fittings
Smls. tube
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
10ASTM A-333Smls. & welded pipeASME BPVC
60ASTM A-572Plate & shapeASME BPVC
58
65
70


ASTM A-573
ASTM A-573
ASTM A-573
Plate & shape
Plate & shape
Plate & shape
ASME BPVC
ASME BPVC
ASME BPVC
M 1020
M 1023
M 1025


ASTM A-575
ASTM A-575
ASTM A-575
Bar
Bar
Bar
ASME BPVC
ASME BPVC
ASME BPVC
G10210
G10220
G10230
G10250



ASTM A-576
ASTM A-576
ASTM A-576
ASTM A-576
Bar
Bar
Bar
Bar
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
B2K03007ASTM A-557E.R.W. tubeASME BPVC
1
1
K03008
K03008
ASTM A-333
ASTM A-334
Smls. & welded pipe
Welded tube
ASME BPVC
ASME BPVC
LF1K03009ASTM A-350ForgingASME BPVC
DK03010ASTM A-139Welded pipeASME BPVC
LF2K03011ASTM A-350ForgingASME BPVC
EK03012ASTM A-139Welded pipeASME BPVC
F42
F46
F48
F50
F52
F56
F60
F65
F70
K03014
K03014
K03014
K03014
K03014
K03014
K03014
K03014
K03014
ASTM A-694
ASTM A-694
ASTM A-694
ASTM A-694
ASTM A-694
ASTM A-694
ASTM A-694
ASTM A-694
ASTM A-694
Forging
Forging
Forging
Forging
Forging
Forging
Forging
Forging
Forging
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
4K03017ASTM A-266ForgingASME BPVC
BK03018ASTM A-135E.R.W. pipeASME BPVC
1AK03020ASTM A-541ForgingASME BPVC
IK03046ASTM A-765ForgingASME BPVC
IIK03047ASTM A-765ForgingASME BPVC
Y35
Y42
Y46
Y48
Y50
Y52
Y56
Y60







ASTM A-381
ASTM A-381
ASTM A-381
ASTM A-381
ASTM A-381
ASTM A-381
ASTM A-381
ASTM A-381
Welded pipe
Welded pipe
Welded pipe
Welded pipe
Welded pipe
Welded pipe
Welded pipe
Welded pipe
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
70K03101ASTM A-515PlateASME BPVC
FK03102ASTM A-414SheetASME BPVC
GK03103ASTM A-414SheetASME BPVC
B
C
K03200
K03200
ASTM A-696
ASTM A-696
Bar
Bar
ASME BPVC
ASME BPVC
CK03501ASTM A-106Smls. pipeASME BPVC
Cl. 60
Cl. 70
K03502
K03502
ASTM A-181
ASTM A-181
Pipe flange & fittings
Pipe flange & fittings
ASME BPVC
ASME BPVC
CK03503ASTM A-178E.R.W. tubeASME BPVC
K03504ASTM A-105Flanges & fittingsASME BPVC
C2K03505ASTM A-557E.R.W. tubeASME BPVC
1
2
K03506
K03506
ASTM A-266
ASTM A-266
Forging
Forging
ASME BPVC
ASME BPVC
BK02008ASTM A-372ForgingASME BPVC
BK12001ASTM A-737PlateASME BPVC
BK12007ASTM A-738PlateASME BPVC
AK12447ASTM A-738PlateASME BPVC
1K13502ASTM A-508ForgingASME BPVC
1026 CWG10260ASTM A-513TubeASME BPVC
1J03502ASTM A-356CastingASME BPVC
LCAJ02504ASTM A-352CastingASME BPVC
LCCJ02505ASTM A-352CastingASME BPVC
B
X42
X46
X52
X56
X60
X65
X70







API Spec 5L
API Spec 5L
API Spec 5L
API Spec 5L
API Spec 5L
API Spec 5L
API Spec 5L
API Spec 5L
Smls. & welded pipe
Smls. & welded pipe
Smls. & welded pipe
Smls. & welded pipe
Smls. & welded pipe
Smls. & welded pipe
Smls. & welded pipe
Smls. & welded pipe
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
ASME BPVC
Table: Typical materials