Ultra-thick steel plate for hydrogen-contacting equipment and preparation method of ultra-thick steel plate

一种临氢设备用超大厚度钢板及其制备方法

Abstract

The invention relates to an ultra-thick steel plate for hydrogen-contacting equipment. The steel plate is 200mm in thickness; the steel plate main body is bainite; the steel plate comprises the following chemical in gradients in percentage by weight: 0.11% to 0.15% of C, 0.40% to 0.60% of Mn, 0.05% to 0.10% of Si, smaller than or equal to 0.008% of P, smaller than or equal to 0.003% of S, 2.10% to 2.50% of Cr, 1.00% to 1.10% of Mo, smaller than or equal to 0.20% of Ni, smaller than or equal to 0.20% of Cu, 0.30% to 0.35% of V, 0.03% to 0.05% of Nb, smaller than or equal to 0.001% of Sb, smaller than or equal to 0.001% of Sn, smaller than or equal to 0.001% of As, smaller than or equal to 0.002% of O, smaller than or equal to 0.0002% of H, smaller than or equal to 0.02% of Al and the balance of Fe and inevitable impurity elements.
本发明涉及一种临氢设备用超大厚度钢板,厚度为200mm,钢板主体为贝氏体,钢板的化学成分按重量百分比计为C:0.11~0.15%,Mn:0.40~0.60%,Si:0.05~0.10%,P≤0.008%,S≤0.003%,Cr:2.10~2.50%,Mo:1.00~1.10%,Ni≤0.20%,Cu≤0.20%,V:0.30~0.35%,Nb:0.03~0.05%,Sb≤0.001%,Sn≤0.001%,As≤0.001%,O≤0.002%,H≤0.0002%,Al总≤0.02%,余量为Fe及不可避免的杂质元素。

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    Title
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