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SNB21-1-5

Description

China CNS SNB21-1-5 China Taiwan Structural steel and SNB21-1-5 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Structure Steel: SNB21-1-5
Category Type Steel Grade Standard Country Application
Steel GradesStructure Steel SNB21-1-5 CNS China China Taiwan Structural steel
SUM25
SUM31
SUM31L
SUM32
SUM41
SUM42
SUM43
SNB5-1
SNB7-2
SNB16-3

Chemical composition(mass fraction)(wt.%) of the SNB21-1-5

C(%) Si(%) Mn(%) P(%) S(%) Cr(%) Ni(%) Mo(%) V(%)
0.36-0.44 0.20-0.35 0.45-0.70 0.025 0.025 0.80-1.15 0.50-0.65 0.25-0.35

Mechanical Properties of steel grade SNB21-1-5

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)
159 (≥) 692 (≥) 43 13 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 441

Physical Properties of steel grade SNB21-1-5

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
31 - -     0.23 -  
188 992 - 23.3 144   -  
534 - 12 12.2   111 441

Heat Treatment of steel grade SNB21-1-5

Heat treated : 1695°C - 1693°C

Technological Curves of steel grade SNB21-1-5

Cross Reference Table (Equivalent Grade) of SNB21-1-5

Grade Standard Country Application
SNB21-1-5 CNS China China Taiwan Structural steel

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