SUS321 Stainless Steel C Si Mn S P P S Cr Mn Ni Cr Ni 
 ≤ 0.08 ≤ 1.00 ≤ 2.00 ≤ 0.030 ≤ 0.035 17.00 ~ 19.00 9.00 ~ 12.00 
 SUS321 Stainless Steel 

 Stainless steel: SUS321 ● Features and Scope: Add Ti to improve resistance to intergranular corrosion, not recommended for decorative parts. ● Chemical Composition: C: ≤ 0.08 Si Si: ≤ 1.00 Manganese Mn: ≤ 2.00 S S: ≤ 0.030 P P: ≤ 0.035 Cr-Cr: 17.00 ~ 19.00 Ni-Ni: 9.00 ~ 12.00 Titanium Ti: ≥ 5 × C% ● Mechanical Properties: Tensile σb (MPa): ≥ 520 conditions yield strength σ0.2 (MPa): ≥ 205 Elongation δ5 (%): ≥ 40 Reduction of 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 can be stabilized, heat treatment temperature of 850 ~ 930 ℃, but must contract. Microstructure: Organizing for the austenitic type. ● Delivery status: generally heat treatment delivery, the treatment types specified in the contract; not indicated, according to the non-heat treatment delivery