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住友金属工业公司开发的高耐蚀性铁素体系不锈钢“NAR—FC4”已正式投放市场。 由于铁素体系不锈钢耐蚀性好,最近作为屋顶材料很受青睐。各钢铁公司正大力开展这方面的销售活动。住友金属工业公司虽然起步较晚。但由于他们的产品改变添加成分,获得了更好的耐蚀性,而且热膨胀系数小,容易加工,在市场上仍具有一定的优势。该公司还开发了独特的焊接工艺,使其在靠近海岸的屋顶材料或外装修材料方面有相当强的竞争力。
Sumitomo Metal Industries has developed a highly corrosion resistant ferritic stainless steel “NAR-FC4” has been officially put on the market. Due to its high corrosion resistance, ferritic stainless steel is favored as a roofing material recently. Each steel company is vigorously carrying out sales activities in this area. Although Sumitomo Metal Industries started late. However, due to their products to change the added components, get better corrosion resistance, and thermal expansion coefficient is small, easy processing, the market still has some advantages. The company also developed a unique welding process that made it competitively competitive with roofing materials or exterior materials close to the coast.