PURPOSE:To obtain the titled steel superior especially in stress corrosion cracking resistance, pitting corrosion resistance under high temp. water circumstance by tempering a stainless steel contg. Ni, Cr in which totaled contents of Ni+Mn and Mo+Si+V are prescribed respectively, under a specified Ac1 transformation point and a prescribed C content. CONSTITUTION:The Ni, Cr stainless steel in which 4.0-5.5% Ni, 12.0-10.0% Cr, 0.1% Mn are contained respectively, the totaled contents of Ni, Mn and Mo, Si, V are prescribed to 4.1-5.5% and 1.5-4.0% respectively is treated as follows: Namely, in the stainless steel, Ac1 transformation point set to =620 deg.C, further, C content is regulated to 0.03-0.05%, and the tempering is performed at 620- 660 deg.C. The martensitic stainless steel contg. Ni, Cr and obtained by the method, is superior in mechanical properties, weldability, castability and has said characteristics under high temp. water circumstance.
展开▼
机译：目的：获得特别是在耐应力腐蚀开裂性，高温下耐点蚀性方面优异的标题钢。通过对不锈钢进行回火来改善水的状况。在规定的Ac1转变点和规定的C含量下，分别规定Ni + Mn和Mo + Si + V的合计含量的Ni，Cr。组成：分别含有4.0-5.5％的Ni，12.0-10.0％的Cr，0.1％的Mn的Ni，Cr不锈钢，Ni，Mn和Mo，Si，V的总含量规定为4.1-5.5％，将1.5-4.0％分别处理如下：即，在不锈钢中，将Ac1转变点设置为> = 620℃，进一步，将C含量调节为0.03-0.05％，并在620-660℃进行回火摄氏度马氏体不锈钢（续）。通过该方法获得的Ni，Cr具有优异的机械性能，可焊接性，可铸造性，并且在高温下具有所述特性。水的情况。
展开▼
