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近年来石油化工,特别是三大合成工业的迅速发展需要提供更多的化工设备和材料。因此,对不锈钢的品种、质量提出了许多新的要求。耐硫酸用钢就是当前急需解决的材料之一。Ni_(25)MO_3Cu_3SiNb(以下简称Ni_(25)或9—41)是针对高温中等浓度硫酸腐蚀而设计的一种新型节CrNi奥氏体耐蚀钢。在这方面国外现用金属材料是:哈氏合金(Ni60％,MO30％)20Cb—3(Cr_(20)Ni_(35)MO_4Cu_3Nb);Carpenter20(Cr_(20)Ni
In recent years, the rapid development of petrochemicals, especially the three major synthetic industries, needs to provide more chemical equipment and materials. Therefore, the stainless steel varieties, the quality of many new requirements. Sulfuric acid-resistant steel is one of the most urgent materials to be solved. The Ni_ (25) MO_3Cu_3SiNb (hereinafter referred to as Ni_ (25) or 9_41) is a new type of CrNi austenitic corrosion resistant steel designed for high temperature and medium concentration sulfuric acid corrosion. In this regard, the current foreign materials are Hastelloy (Ni60%, MO30%) 20Cb-3 (Cr20Ni35) MO_4Cu_3Nb); Carpenter20 (Cr20 Ni