确定屈服强度、抗拉强度、断后伸长率和断面收缩率。 试样形状及尺寸依据产品的具体标准。 采用**夏比冲击试验（Charpy Impact Test）**评估材料在低温条件下的韧性。 测试温度、试样尺寸和V型缺口的制备需符合标准要求。 ASTM A370 适用于不同钢材的机械性能评估 ...

Laboratory technicians who test fuels, biofuels and other industrial products for supply to airports and others in New Zealand are excluded from a bonus pay scheme that the company will only provide ...