Abstract The stainless steel core-plate structure is a new prefabricated structure with the stainless steel core-plate as the major component. Studying the material characteristics of the stainless steel core-plate is the premise of structure design. The panels and the core tubes (thin-walled round stainless steel tube) are welded by the copper brazing, and the mechanical properties of material may be changed by this process. The tensile tests at room temperature, elevated temperatures and after fire exposure were carried out in this paper, and the results were compared with other tests. It was found that the yield strength of S30408 Stainless steel decreased to 64% of the raw material at room temperature due to the brazing process, and the ductility was slightly increased. The mechanical properties of the material after brazing process decreased more rapidly than other tests. The improved stress-strain relationship model at room temperature and elevated temperatures of the S30408 stainless steel after brazing process was proposed.

中文翻译：

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钎焊工艺对S30408不锈钢力学性能影响的实验研究

摘要 不锈钢芯板结构是一种以不锈钢芯板为主要构件的新型预制结构。研究不锈钢芯板的材料特性是结构设计的前提。面板与芯管（薄壁圆形不锈钢管）采用铜钎焊接而成，材料的机械性能可能会因此而改变。本文进行了室温、高温和火灾后的拉伸试验，并将结果与​​其他试验进行了比较。发现S30408不锈钢由于钎焊工艺，室温下屈服强度下降到原材料的64%，延展性略有提高。钎焊过程后材料的机械性能比其他试验下降得更快。提出了钎焊后S30408不锈钢在室温和高温下的改进应力应变关系模型。