Standard: GB / T 1220-1992
● Features and application:
Adding Ti to improve resistance to intergranular corrosion, not recommended for decorative parts.
● Chemical Composition:
Carbon C: ≤ 0.08
Si Si: ≤ 1.00
Manganese Mn: ≤ 2.00
Sulfur S: ≤ 0.030
Phosphorus P: ≤ 0.035
Chromium Cr: 17.00 ~ 19.00
Ni-Ni: 9.00 ~ 12.00
Ti Ti: ≥ 5 × C%
● Mechanical Properties:
Tensile strength σb (MPa): ≥ 520
Conditions yield strength σ0.2 (MPa): ≥ 205
Elongation δ5 (%): ≥ 40
Reduction of area ψ (%): ≥ 50
Hardness: ≤ 187HB; ≤ 90HRB; ≤ 200HV
● Heat treatment and microstructure specifications:
Heat treatment specifications: 1) solid solution 920 ~ 1150 ℃ rapid cooling; 2) According to the demand side, demand may be stabilizing treatment, heat treatment temperature is 850 ~ 930 ℃, but it must be stated in the contract.
Microstructure: Organizing for the austenitic type.
● Delivery status: normal to heat treatment delivery, the treatment types specified in the contract; not indicated, according to the heat treatment state of delivery.
