内容发布更新时间 : 2024/6/9 11:35:15星期一 下面是文章的全部内容请认真阅读。

抗HIC碳钢的要求：THE REQUIREMENT FOR HIC RESISTANT CARBON STEEL; （1）应符合NACE MR 0103的规定。SHALL CONFORM TO NACE MR 0103. （2）必须是硅镇静钢；SHALL BE SI KILLED STEEL.

（3）屈服强度（ΣS）小于345MPA;YIELD STRENGTH IS LIMITED TO 345MPA MAX; （4）碳当量：CE<0.42%,CE=C+MN/6+(CR+MO+V)/5+(NI+CU)/15;

EQUIVALENT: CE<0.42%,CE=C+MN/6+(CR+MO+V)/5+(NI+CU)/15; （5）S≤0.02%(WT), P≤0.03%(WT);

（6）应以正火组织状态交货，焊后应进行消除应力热处理；SHALL BE NORMALIZED AND PWHT IS REQUIRED FOR STRESS RELIEF.

（7）母材焊缝及其热影响区的硬度不超过200HB，且焊缝及其热影响区的硬度不超过母材的120％；HARDNESS FOR WELDS AND HEAT AFFECTED ZONE IS LIMITED TO 200HBN,AND NOT MORE THAN 120% HARDNESS OF BASE MATERIAL.

（8）母材和焊缝表面不得有深度大于0.5mm的尖锐缺陷存在。ANY SHARP DEFECT WITH A DEPTH MORE THAN 0.5MM IS NOT ALLOWED IN THE SURFACE OF BASE MATERIAL AD WELD.

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