法兰材质详解 A182F91锻件的化学成分和性能要求 材料：不锈钢 碳钢 合金钢 交期：标准法兰常年现货 描述：联系站长免费领取法兰标准及重量表 规格： DN20-DN3000 在线咨询 产品详情 ASTM A182 – Forged or Rolled Alloy and Stainless Steel Pipe Flanges, Forged Fittings, and Valves and Parts for High Temperature Service Grade: F91 （Low Alloy Steels） UNS number: K90901 Category: Low Alloy Steels Chemical Requirements, % C: 0.08-0.12 Mn: 0.30-0.60 P: ≤0.020 S: ≤0.010 Si: 0.20-0.50 Ni: ≤0.40 Cr: 8.0-9.5 Mo: 0.85-1.05 Nb: 0.06-0.10 N: 0.03-0.07 Al: ≤0.02 V: 0.18-0.25 Ti: ≤0.01 Zr: ≤0.01 Heat treatment Normalize(1040-1080 °C)+temper(730-800 °C) Tensile Requirements Tensile Strength: ≥585MPa Yield Strength: ≥415MPa Elongation: ≥20 Reduction of Area: ≥40 Hardness(HB): ≤248
