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    • 6. 发明授权
    • Weldable high-strength structural steel with 13% chromium
    • 13%铬的可焊接高强度结构钢
    • US5462615A
    • 1995-10-31
    • US244334
    • 1994-07-25
    • Ingo Von HagenRolf PopperlingHubertus SchlerkmannUlrike Zeislmair
    • Ingo Von HagenRolf PopperlingHubertus SchlerkmannUlrike Zeislmair
    • C21D8/02C21D8/10C22C38/00C22C38/22C22C38/26C22C38/40C22C38/48
    • C22C38/22C22C38/26
    • Disclosed is a process for producing seamless steel pipes or flat products (strip or sheet) for pipes or vessels which are intended for the conveyance, transport or processing of gaseous or liquid hydrocarbons containing CO.sub.2 and water and possibly small proportions of H.sub.2 S and are resistant to stress crack corrosion and have good welding properties at the same time and a 0.2-percent elongation limit of at least 450 N/mm.sup.2. The process uses a nickel-containing steel of the following composition (percent by weight): min. 0.015% C, 0.15-0.50% Si, max. 2.00% Mn, max. 0.020% P, max. 0.003% S, 12.0-13.8% Cr, 0.002-0.02% N, 0.01-0.05% Nb, remainder iron and usual impurities. It is presently suggested that the nickel content is limited to a maximum of 0.25%, the manganese content amounts to at least 1.0%, the carbon content is limited to 0.035%, and 0.01 to 1.2% molybdenum is contained as additional alloying component.
    • PCT No.PCT / DE92 / 00987。 371日期:1994年7月25日 102(e)日期1994年7月25日PCT提交1992年11月23日PCT公布。 出版物WO93 / 11270 日期1993年6月10日。公开是生产用于管道或容器的无缝钢管或扁平产品(带或片)的方法,用于运输,运输或加工含有二氧化碳和水的气态或液态烃,可能小 H2S的比例并且耐应力裂纹腐蚀并且同时具有良好的焊接性能以及至少为450N / mm 2的0.2%伸长极限。 该方法使用以下组成的含镍钢(重量百分比):分钟。 0.015%C,0.15-0.50%Si,最大。 2.00%Mn,最大 0.020%P,最大 0.003%S,12.0-13.8%Cr,0.002-0.02%N,0.01-0.05%Nb,余量为铁和常规杂质。 目前建议将镍含量限制在最大0.25%,锰含量至少为1.0%,碳含量限制在0.035%,而作为附加合金成分含有0.01〜1.2%的钼。