S32750钢板#2507双相钢 耐腐蚀钢 高强不锈钢板
2507 is a ferrite austenite (two-phase) stainless steel, it has integrated many ferritic steel and austenitic steel is the most beneficial properties, because the steel chromium and molybdenum content is very high, so has the very good resistance to pitting corrosion, crevice corrosion and uniform corrosion ability. Two-way microstructure ensures that the steel has a high ability to resist stress corrosion cracking, and the mechanical strength is high. The intensity of the 2507 duplex stainless steel and the corrosion resistant ability is stronger, is mainly used for chemical processing, petrochemical and underwater equipment. It has stronger ability to resist chloride corrosion, high heat conductivity and low thermal expansion coefficient. High content of chromium, molybdenum and nitrogen's it has high corrosion resistance to pitting corrosion, crevice corrosion and general ability. Its impact strength is also very high, 2507 alloy unfit for use in the above 570 ℃ temperature conditions, for a long time in such an environment, its toughness is reduced.
2507化学成分（％）
碳：(C) ≤0.03
锰：(Mn) ≤1.2
硅：(Si) ≤0.08
硫：(S) ≈0.02
磷：(P) ≤0.035
铬：(Cr) ≈24.0～26.0
镍：(Ni) ≈6.0～8.0
铜：（Cu）≤0.5
氮：(N) ≈0.24~0.32
机械性能：SAF 2507具有很高的耐压强度、冲击强度及较低的热膨胀系数和较高的导热性.这些特性适用于很多结构零件及机械部件.SAF 2507冲击强度很高,不宜长期置于高于570°F的温度环境下,这样可能会减弱其韧性.抗拉强度：σb≥730Mpa；延伸率：δ≥20%
热处理制度℃1025-1125水淬 抗拉强度σb (Mpa)≥800 抗拉强度σs(Mpa)≥550 伸长率/δ%≥15 布氏硬度≤310 洛氏32
