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美国最近研制成功一种适用于特别严重腐蚀环境的新品种不锈钢以及应用于半导体方面的这种新型复合材料产品。这种 ADD29—4—2新型不锈钢,其主要成份为:铬29%,钼4%,镍2%。它和十年前采用真空熔炼所得的先前产品成份相同,然而,现在采用新的氩一氧去碳生产方法,因此,含碳量即使较过高(典型的约为0.025%)。成本还是低得多,它也含有微量的钛或钴。这种不锈钢的簿板和焊接管道制品在各种化学环境里具有很高的耐腐蚀性,包括在稀硫酸和盐酸溶液里。以往需要使用价格昂
The United States has recently developed a new breed of stainless steel suitable for use in particularly severe corrosive environments and this new composite material used in semiconductors. The ADD29-4-2 new stainless steel, the main ingredients are: 29% chromium, molybdenum 4%, nickel 2%. It is the same as the previous product made by vacuum melting ten years ago. However, the new method for the production of Argon-ODS now uses the carbon content even higher (typically around 0.025%). The cost is still much lower, and it also contains traces of titanium or cobalt. This stainless steel book and welded pipework has high corrosion resistance in a wide range of chemical environments, including dilute sulfuric and hydrochloric acid solutions. In the past need to use expensive