Stainless steel multifold pipe
    1.
    发明授权
    Stainless steel multifold pipe 失效
    不锈钢多层管

    公开(公告)号:US5458156A

    公开(公告)日:1995-10-17

    申请号:US143400

    申请日:1993-10-29

    摘要: A multifold pipe made by multiple rolling up and turning of a copper coated steel sheet into a multifold pipe, characterized in that said steel sheet is a cold rolled sheet of a super soft austenitic stainless steel comprising by weight: up to 0.05% of C, up to 1.0% of Si, up to 5.0% of Mn, from 9.0% to 15.0% of Ni, from 15.0% to 20.0% of Cr, up to 0.04% of N, up to 5.0% of Cu, the balance being Fe and unavoidable impurities, wherein the alloying elements are further adjusted so that both the two relations (1) and (2) noted below are satisfied:K=20.5+13.0.times.C+0.99.times.Si-1.1.times.Mn-Ni-0.4.times.Cu +0.4.times.Cr+117.1.times.N.ltoreq.19.5 (1)H=27.1+60.9.times.C+0.26.times.Si-Ni-0.79.times.Cu+0.68 .times.Cr+52.6.times.N.ltoreq.29.0 (2)The multifold pipe according to the invention is excellent in fluid tightness of its fused part and in corrosion resistance.

    摘要翻译: 一种多层管,其通过多层轧制和多层轧制而成的多层管,其特征在于,所述钢板为超软奥氏体不锈钢的冷轧板,其重量为C:0.05%以下, 高达1.0%的Si,至多5.0%的Mn,9.0%至15.0%的Ni,15.0%至20.0%的Cr,至多0.04%的N,至多5.0%的Cu,余量为Fe 和不可避免的杂质,其中进一步调整合金元素,使得满足以下两个关系式(1)和(2):K = 20.5 + 13.0xC + 0.99xSi-1.1xMn-Ni-0.4xCu + 0.4xCr + 117.1×N