1Cr17Mo 

 Standard: GB / T 1220-1992 ● Features and Scope: 1Cr17Mo improved stainless steel for the 1Cr17 than 1Cr17 strong salt solution, as the car exterior material used. ● Chemical Composition: C: ≤ 0.12 Si Si: ≤ 1.00 Manganese Mn: ≤ 1.00 S S: ≤ 0.030 P P: ≤ 0.035 Cr-Cr: 16.00 ~ 18.00 Ni: to allow to join ≤ 0.60 Mo Mo: 0.75 ~ 1.25 ● mechanics properties: tensile strength σb (MPa): ≥ 450 conditions yield strength σ0.2 (MPa): ≥ 205 Elongation δ5 (%): ≥ 22 Reduction of ψ (%): ≥ 60 Hardness: ≤ 183HB ● Heat treatment specification and microstructure: heat treatment specifications: air-cooled 780 ~ 850 ℃ annealing or slow cooling. Microstructure: Organizing for the ferrite. ● Delivery status: generally heat treatment delivery, the treatment types specified in the contract; not indicated, according to the non-heat treatment delivery