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Description

China GB GB/T 1220 (1992) , GB/T 3280 (2007) , GB/T 4237 (1992) , GB/T 4239 (1991), GB/T 4356 (2002) , 7Cr17 Specialsteel Stainless steel bars and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: 7Cr17
Category Class Grade Type Standard Country Application
Steel GradesSpecialsteel 7Cr17 Martensite GB China Stainless steel bars

Chemical composition(mass fraction)(wt.%) of the 7Cr17

C Si Mn Ni Cr Mo
0.60 -0.75 ≤1.00 ≤1.00 ≤0.60 16.00 -18.00 ≤0.75

Mechanical Properties of steel grade 7Cr17

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)
414 (≥) 875 (≥) 24 44 14 Solution and Aging, Annealing, Ausaging, Q+T,etc 424

Physical Properties of steel grade 7Cr17

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
44 - -     0.12 -  
266 343 - 12.3 112   -  
356 - 44 21.2   211 321

Heat Treatment of steel grade 7Cr17

Heat treated : 1843°C - 1531°C

Technological Curves of steel grade 7Cr17

Cross Reference Table (Equivalent Grade) of 7Cr17

Grade Standard Country Application
7Cr17
7Cr17
7Cr17

Relevant standard of 7Cr17

GB/T 1220 (1992) Stainless steel bars GB-T-1220--(1992)-.pdf
GB/T 3280 (2007) Cold rolled stainless steel sheets and plates GB-T-3280--(2007)-.pdf
GB/T 4237 (1992) Hot rolled stainless steel sheets and plates GB-T-4237--(1992)-.pdf
GB/T 4239 (1991) Cold rolled stainless steel and heat resisting steel strips GB-T-4239--(1991).pdf
GB/T 4356 (2002) Stainless steel wire rods GB-T-4356--(2002)-.pdf

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