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Description

China CNS SNB7-2 China Taiwan Structural steel and SNB7-2 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Structure Steel: SNB7-2
Category Type Steel Grade Standard Country Application
Steel GradesStructure Steel SNB7-2 CNS China China Taiwan Structural steel
SUM23L
SUM24L
SUM25
SUM31
SUM31L
SUM32
SUM41
SUM42
SUM43
SNB5-1

Chemical composition(mass fraction)(wt.%) of the SNB7-2

C(%) Si(%) Mn(%) P(%) S(%) Cr(%) Ni(%) Mo(%) V(%)
0.38-0.48 0.20-0.35 0.75-1.00 0.04 Max 0.030 0.80-1.10 0.15-0.25

Mechanical Properties of steel grade SNB7-2

Yield
Rp0.2 (MPa)
Tensile
Rm (MPa)
Impact
KV/Ku (J)
Elongation
A (%)
Reduction in cross section on fracture
Z (%)
As-Heat-Treated Condition Brinell hardness (HBW)
661 (≥) 255 (≥) 43 33 23 Solution and Aging, Annealing, Ausaging, Q+T,etc 444

Physical Properties of steel grade SNB7-2

Temperature
(°C)
Modulus of elasticity
(GPa)
Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and Thermal conductivity
(W/m·°C)
Specific thermal capacity
(J/kg·°C)
Specific electrical resistivity
(Ω mm²/m)
Density
(kg/dm³)
Poisson’s coefficient, ν
23 - -     0.32 -  
679 542 - 41.3 334   -  
932 - 23 32.2   331 241

Heat Treatment of steel grade SNB7-2

Heat treated : 1492°C - 1997°C

Technological Curves of steel grade SNB7-2

Cross Reference Table (Equivalent Grade) of SNB7-2

Grade Standard Country Application
SNB7-2 CNS China China Taiwan Structural steel

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