431 stainless steel Contents: 1: Introduction 2: Chemical composition 3: Physical Properties 4: Features Product Description: 431 stainless steel containing Ni, Cr, obtained by heat treatment of high mechanical properties, corrosion resistance than 410 steel and 430 steel . 431 stainless steel corresponding Chinese 1Cr17Ni2, Japanese JIS SUS431. 431 stainless steel plate 431 stainless steel chemical composition: Carbon C: ≤0.20 Mn Mn: ≤1.00 Si Si: ≤1.00 chromium Cr: 15.0 ~ 17.0 Nickel Ni②: 1.25 ~ 2.50 P P: ≤0.04 sulfur S: ≤0.03 Note: ① single values ??except otherwise stated, are the highest value; ② When used in some pipe technology, nickel-containing austenitic stainless steels and some models have slightly higher than the value shown in the table; ③ random; ④ highest Ta content was 0.10%; ⑤ maximum content of 0.75%; ⑥ highest content of 0.70% Physical properties: Tensile strength σb (MPa): quenching and tempering, ≥1080 elongation δ5 (%): quenching and tempering, ≥ 10, impact energy Akv (J): quenching and tempering, ≥39 Hardness: annealing, ≤285HB heat treatment and microstructure specifications: Heat treatment specifications: 1) annealing, 680 ~ 700 ℃ tempering air cooling; 2) quenching, 950 ~ 1050 ℃ oil cooling; 3) tempering 275 ~ 350 ℃ air cooling. Microstructure: Organizing for the martensitic. Delivery status: generally heat treatment delivery, the treatment types specified in the contract; not indicated, by not heat treatment delivery. Product Features: Used with high resistance to nitric acid and organic acid corrosion of parts, containers and equipment.