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我们公司用SUS410螺丝，经过1050度氨分解气氛淬火，两次208度回火各一个半小时。在铝合金基座上安装这种螺丝一天至一周后先后断裂，请各位大神帮忙看看断口是否氢脆。最下面一张中白色物质为包试样的纸屑。