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Germany DIN 9b 耐蚀钢紧固件的机械性能-第1部分:螺栓、螺钉和螺柱 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 9b / 9b
Category Grade Standard Region/Area Standard Content
Metals 9b DIN EN ISO 3506-1 Germany 耐蚀钢紧固件的机械性能-第1部分:螺栓、螺钉和螺柱

Chemical composition(mass fraction)(wt.%) of the 9b

Element Min Max Similar
Ni 1.5000 2.5000 -
Cr 15.0000 17.5000 -
S - 0.0300 -
P - 0.0400 -
Mn - 1.0000 -
Si - 1.0000 -
C 0.1400 0.2300 -

Mechanical Properties of steel grade 9b

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)
295 (≥) 369 (≥) 23 13 43 Solution and Aging, Annealing, Ausaging, Q+T,etc 211

Physical Properties of steel grade 9b

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
33 - -     0.41 -  
814 497 - 44.3 422   -  
883 - 34 11.2   333 442

Heat Treatment of steel grade 9b

Heat treated : 1921°C - 1228°C

Technological Curves of steel grade 9b

Cross Reference Table (Equivalent Grade) of 9b

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