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Author(s): 
Pages: 66
Year: Issue:  6
Journal: Materials for Mechanical Engineering

Keyword:  铁素体不锈钢奥氏体不锈钢应力腐蚀开裂性能低镍耐点蚀性能腐蚀开裂物理性能总含量新型;
Abstract: <正> 通常的奥氏体不锈钢至少含20%镍,才具备良好的耐应力腐蚀开裂性能。R249是一种新型的低镍铁素体不锈钢,碳、氮总含量为0.040%(各自最大含量不超过0.025%),含0.4%Si、0.3%Mn、18%Cr、2.2%Mo、10.4%Ti、Ni<0.5%。该钢在NaCl溶液中具有耐点蚀和腐蚀开裂的性能。特别是耐点蚀性能优于AISI316
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