优质碳素结构钢 GBT 699-2015.pdf

GB/T699-2015GB/T7736钢的低倍缺陷超声波检险法GB/T8170一2008数值修约规则与极限数值的表示和判定GB/T10561钢中非金属夹杂物含量的测定标准评级图显微检验法GB/T11261钢铁氧含量的测定脉冲加热惰气熔融-红外线吸收法GB/T13298金属显微组织检险方法GB/T13299钢的显微组织评定方法GB/T15711钢材塔形发纹酸浸检验方法GB/T17505钢及钢产品交货一般技术要求GB/T20066钢和铁化学成分测定用试样的取样和制样方法GB/T20123钢铁总碳硫含量的测定高频感应炉燃烧后红外吸收法（常规方法）GB/T20124钢铁氮含量的测定惰性气体熔融热导法（常规方法）GB/T20125低合金钢多元素含量的测定电感耦合等离子体发射光谱法GB/T21834中低合金钢多元素成分分布的测定金属原位统计分布分析法GB/T28300热轧棒材和盘条表面质量等级交货技术条件YB/T4306钢铁及合金氨含量的测定惰性气体熔融热导法YB/T5293金属材料顶锻试验方法3分类与代号3.1钢棒按使用加工方法分下列两类：a)压力加工用钢UP:1)热加工用钢UHP:2)顶锻用钢UF,3)冷拔坯料用钢UCD。b)切削加工用钢UC.3.2钢棒按表面种类分为下列五类：)压力加工表面SPP:b)酸洗SA;c)喷丸（砂）SS:d)剥皮SF;e)磨光SP。4订货内容按本标准订货的合同或订单应包括下列内容：)标准编号：b)产品名称：c)牌号或统一数字代号：d)交货的重量（或数量）：)尺寸，外形及其允许偏差（见第5章）：D使用加工方法（未注明者，按切削加工用钢）：g)热处理交货或特殊表面状态交货（如有要求，见6.3.2和6.3.3）；h)冲击试验（如有要求，见6.4.2）；2GB/T699-2015i)顶锻（如有要求，见6.5）：j)脱碳层（如有要求，见6.7）；k)特殊要求（如有要求，见6.9）。5尺寸、外形及重量5.1热轧钢棒的尺寸、外形、重量及其允许偏差应符合GB/T702的规定，具体要求应在合同中注明。5.2锻制钢棒的尺寸、外形、重量及其允许偏差应符合GB/T908的规定，具体要求应在合同中注明。6技术要求6.1牌号及化学成分6.1.1钢的牌号、统一数字代号及化学成分（熔炼分析）应符合表1的规定。表1钢的牌号、统一数字代号及化学成分化学成分（质量分数）/%统一数序号牌号PCrNiCu字代号CSiMnU200820850.050.110.170.370.350.650.0350.0350.100.300.25U20102100.070.130.170.370.350.650.0350.0350.150.300.253U20152150.120.180.170.370.350.650.0350.0350.250.300.254U20202200.170.230.170.370.35-0.650.0350.0350.250.300.255U20252250.220.290.170.370.500.800.0350.0350.250.300.256U20302300.270.340.170.370.500.800.0350.0350.250.300.257U20352必0.320.390.170.370.500.800.0350.0350.250.300.25U20402400.370.440.170.370.500.800.0350.0350.250.300.25U20452450.420.500.170.370.500.800.0350.0350.250.300.2510U20502500.470.550.170.370.500.800.0350.0350.250.300.2511U20552550.520.600.170.370.500.800.0350.0350.250.300.2512U20602600.570.650.170.370.50-0.800.0350.0350.250.300.2513U20652650.620.700.170.370.500.800.0350.0350.250.300.2514U20702700.67-0.750.170.370.500.800.0350.0350.250.300.2515U2070260.720.800.170.370.500.800.0350.0350.250.300.2516U20802800.770.850.170.370.500.800.0350.0350.250.300.2517U20852850.820.900.170.370.500.800.0350.0350.250.300.2518U2115215 Mn0.120.180.170.370.701.000.0350.0350.250.300.2519U2120220 Mn0.170.230.170.370.701.000.0350.0350.250.300.2520U2125225 Mn0.220.290.170.370.701.000.0350.0350.250.300.25