钢筋试验全参数钢公称筋直径a级(mm)别热轧光圆钢筋66.581012141618202268101214161820222528323640506810121416182022252832364050取样长度公称mm面积夹具间原始2拉伸冷弯自由间标距mm距mmmm28.2715910033.18160(整50.27165个样78.54171113.1550178350品以10mm153.9184201.1190等间254.5197距标314.2203记）380.120928.27260180423050.27280190564078.543002007050113.13202108460153.93402209870201.136023011280254.538024012690314.2400250140100380.1420260154110490.9450275175125615.8480290196140804.252031022416010185603302521801257600350280200196470040035025028.27260180423050.27280190564078.543002007050113.13202108460153.93402209870201.136023011280254.538024012690314.2400250140100380.1420260154110490.9450275175125615.8480290196140804.2520310224160101856033025218012576003502802001964700400350250拉伸试验屈服强度抗拉强度断后伸最大力总加荷速度KN/sRel MPaRm MPa长率A %伸长率Agt%0.2～1.70.2～2.00.3～3.00.5～4.7HPB235≥HPB235≥235；370；0.7～6.8≥25.0≥10.00.9～9.2HPB300≥HPB300≥1.2～12.1300。420。1.5～15.31.9～18.92.3～22.8冷弯试验180o试验规范执行标准支棍弯心加荷速度KN/s直径d间距mm6276.529.25拉伸试验：836GB/T228-10452002GB1499.11254缓慢施加弯曲力弯曲试验：-200814631672GB/T232-18811999209022991839245230653678拉伸试验：429148104GB/T228-541172002GB1499.260130缓慢施加弯曲力弯曲试验：-200766143GB/T232-75162.519991122101282401442701603002504252445326040754890拉伸试验：5610564120GB/T228-721352002GB1499.280150弯曲试验：-200788165GB/T232-100187.51999140238160272180306200340300475备注
1、光圆
钢筋的拉伸试验取样长度、原始标距、夹具间自由距离均针对测量Agt所用。
热轧带肋钢筋HRB335热轧带肋钢筋HRB400备注：牌号HRB335屈服强度RelMPa抗拉强度RmMPa断后伸长率%不小于17.0最大力总伸长率%公称直径d6～2528～40>40～506～2528～40>40～506～2528～40>40～50冷弯试验180°弯芯直径3d4d5d4d5d6d6d7d8d335HRBF335HRB400400HRBF400HRB500500HRBF500HPB235HPB30023530045554016.07.563015.037025.042010.0d
