TP430铁素体不锈钢焊管S43000不锈钢管材规格齐全可定制
TP430铁素体不锈钢焊管S43000不锈钢管材规格齐全可定制
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耐热不锈钢S17700奥氏体不锈钢S17700不锈钢圆钢无缝管
S17700/AISI 631
是以S17700为基础发展起来的奥氏体-马氏体沉淀硬化不锈钢,又称为控制相变不锈钢。固溶处理后为不稳定的奥氏体组织,有良好的塑韧性和加工性,经过调整,使奥氏体析出碳化物候成分发生变化,再经过马氏体转变处理,大部分组织转变为韧性较好的低碳回火马氏体,这种状态为钢的使用状态,有良好的中温力学性能。耐腐蚀性能优于一般马氏体不锈钢。
化学成分:
碳(C)≤0.09,
锰(Mn)≤1.00,
镍(Ni)6.50~7.75,
硅(Si)≤1.00,
磷(P)≤0.035,
硫(S)≤0.030,
铬(Cr)16.00~18.00,
铝(Al)0.75~1.50
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