文章按照GB/T 2282002《金属材料 室温拉伸试验方法》标准的要求，对冷轧奥氏体不锈钢板的断后伸长率进行了测试，并对检测结果的不确定度进行了评定。当k=2时，置信概率p=95%，断后伸长率不确定度评定结果为A=62.5%±2.0%。
According to the requirements of the standard GB/T 2282002 "metallic materials tensile testing at ambient temperature", the measurement uncertainty for the percentage elongation after fracture of coldrolled austenitic stainless steel plates was studied in this paper. It shows that the uncertainty of percentage elongation after fracture is 2.0%, when k=2 and A=62.5%.
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