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随着国民经济不断发展和国防工业之需要,对耐酸不锈钢的品种、规格、质量提出更高的要求。超低碳镍铬不锈钢作为耐蚀的重要材料已在世界各国迅速发展起来。我国于一九六五年试制成功。本文专就国产超低碳不锈钢的特点、性能及试验结果概述于下,供有关部门参考。一、特点1.耐蚀性好。超低碳不锈钢在1050～1150℃淬火后,完全不产生晶间腐蚀倾向,并在焊后仍有好的耐蚀性,不出现刀口腐蚀。而稳定化钢(如1Cr18Ni9Ti)则在850～900℃保温4小时才不出现晶间腐蚀倾向,且焊后尚不能
With the continuous development of the national economy and the needs of national defense industry, the varieties, specifications and quality of acid-resistant stainless steel are put forward higher requirements. Ultra-low carbon nickel-chromium stainless steel as an important corrosion-resistant material has rapidly developed in all countries in the world. Our country was successfully trial-produced in 1965. This article specifically for the characteristics of domestic ultra-low carbon stainless steel, performance and test results summarized below, for the relevant departments for reference. First, the characteristics of a good corrosion resistance. Ultra-low carbon stainless steel after 1050 ~ 1150 ℃ quenching, no tendency to intergranular corrosion, and still good corrosion resistance after welding, does not appear knife-edge corrosion. The stabilized steel (such as 1Cr18Ni9Ti) at 850 ~ 900 ℃ incubated 4 hours before the intergranular corrosion tendency, and after welding can not