钢材力学性能指标汇总表º]ÁÞY¶D
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º]ÁÞY¶D
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º]ÁÞY¶D
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钢筋的公称横截面积与公称重量º]ÁÞY¶D
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公称直径,mm 公称横截面积mm 2 公称重量,Kg/mº]ÁÞY¶D
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6.5 33.18 º]ÁÞY¶D
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8 50.27 0.395º]ÁÞY¶D
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10 78.54 0.617º]ÁÞY¶D
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12 113.1 0.888º]ÁÞY¶D
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14 153.9 1.21º]ÁÞY¶D
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16 201.1 1.58º]ÁÞY¶D
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18 254.5 2.00º]ÁÞY¶D
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20 314.2 2.47º]ÁÞY¶D
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22 380.1 2.98º]ÁÞY¶D
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25 490.9 3.85º]ÁÞY¶D
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28 615.8 4.83º]ÁÞY¶D
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32 804.2 6.31º]ÁÞY¶D
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36 1018 7.99º]ÁÞY¶D
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40 1257 9.87º]ÁÞY¶D
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50 1964 15.42º]ÁÞY¶D
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注:表中公称重按密度为7.85g/cm3计算。º]ÁÞY¶D
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º]ÁÞY¶D
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一、 钢筋混凝土用热轧带肋钢精GB1499-1998º]ÁÞY¶D
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1、 力学性能º]ÁÞY¶D
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牌号 公称直径mm 屈服点σsMpa 抗拉强度σbMpa 伸长率δs%º]ÁÞY¶D
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不小于º]ÁÞY¶D
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HRB335 6~25 28~50 335 490 16º]ÁÞY¶D
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HRB400 6~25 28~50 400 570 14º]ÁÞY¶D
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HRB500 6~25 28~50 500 630 12º]ÁÞY¶D
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2、弯曲性能(按下表规定的弯心直径弯曲180°后,钢筋受弯曲部位表面不得产生裂纹)º]ÁÞY¶D
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牌号 公称直径mm 弯曲试验 弯心直径º]ÁÞY¶D
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HRB335 6~25 28~50 3a 4a º]ÁÞY¶D
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HRB400 6~25 28~50 4a 5aº]ÁÞY¶D
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HRB500 6~25 28~50 5a 7aº]ÁÞY¶D
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º]ÁÞY¶D
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二、 钢筋混凝土用热轧光圆钢筋GB13013-91º]ÁÞY¶D
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表面形状 钢筋级别 强度等级代号 公称直径mm 屈服点σsMpa 抗拉强度σbMpa 伸长率δs% 冷弯d弯心直径a公称直径º]ÁÞY¶D
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不小于 º]ÁÞY¶D
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光圆 Ι R235 8~20 235 370 25 180°d=aº]ÁÞY¶D
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º]ÁÞY¶D
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º]ÁÞY¶D
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º]ÁÞY¶D
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三、 低碳钢热轧圆盘条GB/T701-1997º]ÁÞY¶D
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牌号 屈服点σsMpa 抗拉强度σbMpa 伸长率δs% 冷弯180°d弯心直径a公称直径º]ÁÞY¶D
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不小于 º]ÁÞY¶D
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Q215 215 375 27 d=0º]ÁÞY¶D
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Q235 235 410 23 d=0.5aº]ÁÞY¶D
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º]ÁÞY¶D
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四、 冷轧扭钢筋JG3046-1999º]ÁÞY¶D
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表一 轧扁厚度、节距º]ÁÞY¶D
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类型 标志直径d 轧扁厚度T不小于 节距L1不大于º]ÁÞY¶D
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Ι型 6.58101214 3.74.25.36.28.0 7595110150170º]ÁÞY¶D
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Ⅱ型 12 8.0 145º]ÁÞY¶D
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º]ÁÞY¶D
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表二 公称横截面积与公称重量º]ÁÞY¶D
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类型 标志直径d 公称横截面积mm 2 公称重量,Kg/mº]ÁÞY¶D
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Ι型 6.58101214 29.545.368.393.3132.7 0.2320.356 0.5360.7331.042º]ÁÞY¶D
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Ⅱ型 12 97.8 0.768º]ÁÞY¶D
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º]ÁÞY¶D
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表三 力学性能º]ÁÞY¶D
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抗拉强度σb Mpa 伸长率δ10 % 冷弯180°(弯心直径=3d)º]ÁÞY¶D
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≥580 ≥4.5 受弯曲部位表面不得产生裂纹º]ÁÞY¶D
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º]ÁÞY¶D
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º]ÁÞY¶D
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五、 冷轧带肋钢筋GB13788-2000º]ÁÞY¶D
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级别代号 抗拉强度σbMpa 伸长率不小于 % 冷弯180°d弯心直径a公称直径 应力松弛σ=0.7σbº]ÁÞY¶D
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不小于 δ10 δ100 1000H不大于% 10H不大于%º]ÁÞY¶D
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CRB550 550 8 -- d=3a -- --º]ÁÞY¶D
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CRB650 650 -- 4 -- 8 5º]ÁÞY¶D
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CRB800 800 -- 4 -- 8 5º]ÁÞY¶D
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CRB970 970 -- 4 -- 8 5º]ÁÞY¶D
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CRB1170 1170 -- 4 -- 8 5º]ÁÞY¶D
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º]ÁÞY¶D
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º]ÁÞY¶D
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º]ÁÞY¶D
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º]ÁÞY¶D
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六、 碳素结构钢GB700-88º]ÁÞY¶D
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表一 拉伸及冲击试验º]ÁÞY¶D
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牌号 等级 拉伸试验 冲击试验º]ÁÞY¶D
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屈服点σs Mpa 抗拉强度σbMpa 伸长率δ5,% 温度℃ V型冲击功(纵向)Jº]ÁÞY¶D
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钢材厚度(直径),mm 钢材厚度(直径),mm º]ÁÞY¶D
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≤16 16~40 40~60 60~100 100~150 >150 ≤16 16~40 40~60 60~100 100~150 >150 º]ÁÞY¶D
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不小于 不小于 不小于º]ÁÞY¶D
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Q195 -- 195 185 -- -- -- -- 315-390 33 32 -- -- -- -- -- --º]ÁÞY¶D
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Q215 A 215 205 195 185 175 165 335-410 31 30 29 28 27 26 -- --º]ÁÞY¶D
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B 20 27º]ÁÞY¶D
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Q235 A 235 225 215 205 195 185 375-460 26 25 24 23 22 21 -- --º]ÁÞY¶D
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B 20 27º]ÁÞY¶D
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C 0 º]ÁÞY¶D
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D -20 º]ÁÞY¶D
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Q255 A 255 245 235 225 215 205 410-510 24 23 22 21 20 19 -- --º]ÁÞY¶D
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B 20 27º]ÁÞY¶D
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Q275 -- 275 265 255 245 235 225 490-610 20 19 18 17 16 15 -- --º]ÁÞY¶D
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º]ÁÞY¶D
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表二 冷弯试验º]ÁÞY¶D
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牌号 试样方向 冷弯试验B=2 a 180°º]ÁÞY¶D
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钢材厚度(直径), mmº]ÁÞY¶D
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≤60 >60~100 >100~200º]ÁÞY¶D
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弯心直径dº]ÁÞY¶D
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Q195 纵 0 —— ——º]ÁÞY¶D
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横 0.5 a º]ÁÞY¶D
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Q215 纵 0.5 a 1.5 a 2 aº]ÁÞY¶D
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横 a 2 a 2.5 aº]ÁÞY¶D
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Q235 纵 a 2 a 2.5 aº]ÁÞY¶D
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横 1.5 a 2.5 a 3 aº]ÁÞY¶D
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Q255 2 a 3 a 3.5 aº]ÁÞY¶D
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Q275 3 a 4 a 4.5 aº]ÁÞY¶D
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º]ÁÞY¶D
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七、 钢筋搭接焊(搭接长度)º]ÁÞY¶D
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钢筋级别 焊缝形式 搭接长度º]ÁÞY¶D
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Ⅰ 单面焊 双面焊 ≥8 d ≥4 dº]ÁÞY¶D
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Ⅱ、Ⅲ 单面焊 双面焊 ≥8 d ≥4 dº]ÁÞY¶D
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注:d为主筋直径(mm),钢筋帮条焊中的帮条长度与钢筋搭接焊中的搭接长度相同,见上表。º]ÁÞY¶D
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º]ÁÞY¶D
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八、 闪光对焊接头弯曲试验指标º]ÁÞY¶D
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钢筋级别 弯心直径 弯曲角(°)º]ÁÞY¶D
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Ⅰ级 2 d 90º]ÁÞY¶D
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Ⅱ级 4 d 90º]ÁÞY¶D
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Ⅲ级 5 d 90º]ÁÞY¶D
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Ⅳ级 7 d 90º]ÁÞY¶D
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注:1、为钢筋直径(mm)。º]ÁÞY¶D
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2、直径大于25 mm的钢筋对焊接头,弯曲试验时弯心直径应增加1倍钢筋直径。
º]ÁÞY¶D
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