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发明公开
CN106399821A 管件用高合金SA387Gr5CL2钢板及其生产方法 无效 - 驳回

管件用高合金SA387Gr5CL2钢板及其生产方法
摘要：
本发明公开了一种管件用高合金SA387Gr5CL2钢板及其生产方法，其由以下重量百分含量的成分组成：C≤0.15%，Si≤0.55%，Mn 0.25～0.66%，P≤0.007%，S≤0.007%，Cr 4.15～5.10%，Mo 0.45～0.60%，Ni≤0.30%，Cu≤0.20%，Al 0.020～0.060%，余量为Fe和不可避免的杂质。本钢板在ASME标准中制定的SA387Gr5钢板标准的基础上进行了改良，优化了钢板中各元素组分及配比，保证了钢板的各项力学性能均满足ASME标准中的要求。本方法所生产的钢板力学性能优秀，质量稳定，满足ASME SA578/SA578M探伤标准中C级的要求；钢板强度较高，屈服强度在310MPa以上，抗拉强度在515MPa～690MPa之间；钢板具有纯净度较高、成分均匀、内部致密等特点，力学性能完全满足标准要求，适合制造管件等关键设备部件。
摘要（英）：

The invention discloses a high alloy SA387Gr5CL2 steel plate for a pipe fitting and a production method of the high alloy SA387Gr5CL2 steel plate. The high alloy SA387Gr5CL2 steel plate is prepared from, by weight percent, not larger than 0.15% of C, not larger than 0.55% of Si, 0.25%-0.66% of Mn, not larger than 0.007% of P, not larger than 0.007% of S, 4.15%-5.10% of Cr, 0.45%-0.60% of Mo, not larger than 0.30% of Ni, not larger than 0.20% of Cu, 0.020%-0.060% of Al and the balance Fe and inevitable impurities. The steel plate is improved on the basis of the SA387Gr5 steel plate standard formulated in the ASME standard, elemental constituents and ratios in the steel plate are optimized, and it is guaranteed that various mechanical properties of the steel plate can meet the requirements in the ASME standard. The steel plate produced through the method is excellent in mechanical property and stable in quality, and the requirement of the level C in the ASME SA578/SA578M flaw detection standard is met; the steel plate is high in strength, the yield strength is 310 MPa or above, and the tensile strength ranges from 515 MPa to 690 MPa; and the steel plate has the beneficial effects of being high in purity, uniform in component, compact in interior and the like, the mechanical properties completely meet the standard requirement, and the steel plate is suitable for manufacturing pipe fittings and other key equipment components.

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