首頁 >> 新聞中心 >> GBT1591-2018低合金高強度結構鋼 Servo Universal Testing Machine
GB/T1591-2018低合金高強度結構鋼2019.2.1實施。GB/T1591-2018修改了鋼材力學性能值及厚度組距的規定，明確屈服強度爲下屈服強度；提高了沖擊吸收能量值，明確了沖擊試驗的取樣部位。GB/T1591-2018適用于一般結構和工程用低合金高強度結構鋼鋼板、鋼帶、型鋼、鋼棒等。
GB/T1591-2018參照EN 10025結構鋼熱軋産品，擴大了標准的適用範圍；增加了Q500、Q550、Q620、Q690強度級別，取消了Q295強度級別；jnshiyanji.com；修改了鋼材化學成分的規定、加嚴了對磷、硫等有害元素的控制；增加了鋼材碳當量及裂紋敏感系數的計算公式及規定；修改了鋼材的交貨狀態，取消了調質鋼的規定；增加了各牌號鋼的厚度方向性能要求；規定了低合金高強度結構鋼的牌號、尺寸、外形、重量及允許偏差、技術要求、試驗方法、檢驗規則、包裝、標志和質量證明書。GB/T2975-2018；GB/T8162-2018；鋼力學性能試驗；鋼産品力學性能試驗；
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濟南恒瑞金試驗機有限公司；山東省力值硬度計量專業委員
（試驗機服務中心）（試驗機配件供應中心）（特殊夾具定制中心）
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