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China GB GB/T 1220 (1992) , GB/T 3280 (2007), GB/T 4231 (1993), GB/T 4239 (1991), 1Cr17Ni7 Specialsteel High strength after cold forming. Used in railway vehicle, conveyor belt, bolt and nut, etc and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: 1Cr17Ni7
Category Class Grade Type Standard Country Application
Steel GradesSpecialsteel 1Cr17Ni7 Austenite GB China High strength after cold forming. Used in railway vehicle, conveyor belt, bolt and nut, etc

Chemical composition(mass fraction)(wt.%) of the 1Cr17Ni7

C Si Mn P S Ni Cr
≤0.15 ≤1.00 ≤2.00 ≤0.035 ≤0.030 6.00 -8.00 16.00 -18.00

Mechanical Properties of steel grade 1Cr17Ni7

Rp0.2 (MPa)
Rm (MPa)
KV/Ku (J)
A (%)
Reduction in cross section on fracture
Z (%)
As-Heat-Treated Condition Brinell hardness (HBW)
777 (≥) 189 (≥) 24 43 14 Solution and Aging, Annealing, Ausaging, Q+T,etc 341

Physical Properties of steel grade 1Cr17Ni7

Modulus of elasticity
Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and Thermal conductivity
Specific thermal capacity
Specific electrical resistivity
(Ω mm²/m)
Poisson’s coefficient, ν
22 - -     0.43 -  
142 849 - 12.3 113   -  
929 - 32 12.2   143 323

Heat Treatment of steel grade 1Cr17Ni7

Heat treated : 1335°C - 1925°C

Technological Curves of steel grade 1Cr17Ni7

Relevant standard of 1Cr17Ni7

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 4231 (1993) Cold rolled stainless steel strips for springs GB-T-4231-(1993).pdf
GB/T 4239 (1991) Cold rolled stainless steel and heat resisting steel strips GB-T-4239-(1991).pdf

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