首页 >> 新闻中心 >> GBT1591-2018低合金高强度结构钢 Servo Universal Testing Machine
GB/T1591-2018低合金高强度结构钢2019.2.1实施。GB/T1591-2018修改了钢材力学性能值及厚度组距的规定,明确屈服强度为下屈服强度;提高了冲击吸收能量值,明确了冲击试验的取样部位。GB/T1591-2018适用于一般结构和工程用低合金高强度结构钢钢板、钢带、型钢、钢棒等。
GB/T1591-2018参照EN 10025结构钢热轧产品,扩大了标准的适用范围;增加了Q500、Q550、Q620、Q690强度级别,取消了Q295强度级别;jnshiyanji.com;修改了钢材化学成分的规定、加严了对磷、硫等有害元素的控制;增加了钢材碳当量及裂纹敏感系数的计算公式及规定;修改了钢材的交货状态,取消了调质钢的规定;增加了各牌号钢的厚度方向性能要求;规定了低合金高强度结构钢的牌号、尺寸、外形、重量及允许偏差、技术要求、试验方法、检验规则、包装、标志和质量证明书。GB/T2975-2018;GB/T8162-2018;钢力学性能试验;钢产品力学性能试验;
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