气体保护焊实芯焊丝牌号型号焊丝化学成分（%）熔敷金属力学性能特点与用途GBCMnSiSP其余Rel/RP0.2RmAAKVMPaMPa%JTHQ-50AER49-10.111.80/0.65/0.950.030.03Cu0.5037249020常温焊接低碳钢及部分低合金钢结构2.147THQ-50CER50-60.06/1.40/0.80/1.150.0250.025Cu0.5042050022-30℃焊接低碳钢及部分低合金钢结构0.151.8527THQ50-2ER50-20.070.90/0.40/0.700.0250.025Cu0.5042050022-30℃焊接低碳钢及500MPa低合金钢结构1.427THQ50-3ER50-30.06/0.90/0.45/0.750.0250.025Cu0.5042050022-20℃用于机械、船舶车辆等薄板工件高速焊接0.151.427THQ50-GER50-G0.151.40/0.55/0.030.03Ti+Zr0.3042050022-30℃用于车辆、工程机械、船舶等结构的平焊及平角焊1.91.1Cu0.5047THQ-G2SiER50-30.06/0.90/0.50/0.0250.025Ni0.1542054022-40℃用于机械、建筑、船舶、车辆等薄板工件需要高速焊接的场合(ISO14341-A-G384MG2Si)0.141.30.75Mo0.1578Al0.02Cr0.15V0.03Cu0.35THQ-50CG3ER50-60.06/1.40/0.80/0.0250.025420500/22-30℃用于机械、建筑、船舶、车辆、压力容器等钢结构以及500MPa级碳钢及低合金钢结构的焊接Ti+Zr0.15(ISO14341-A-G423C/MG3Si1)0.141.6164047THQ-50CG4ER50-60.06/1.60/0.80/0.0250.025420500/22-30℃用于机械、建筑、船舶、车辆、压力容器等钢结构以及500MPa级碳钢及低合金钢结构的焊接(ISO14341-A-G383CG4Si1/G424MG4Si1)0.141.851.1560047(CO2)THQ-60ER55-D2-Ti0.121.20/0.40/0.0250.025Ti0.2047055017-30℃适用于55-60公斤级高强度钢焊接，如桥梁，压力容器建筑等1.90.8Cu0.5027Mo0.20/0.50其它元素总量0.70THQ-60CER60-G0.091.580.750.0150.015Ni0.0252064024-30℃用于煤矿机械、建筑、船舶、车辆等600Mpa级高强钢结构及低合金钢的桥梁，车辆及压力容器结构的焊接(例值)Cu0.0560Mo0.02Ti0.20V0.04Cr0.70THQ60-1ER60-G0.111.40/0.50/0.0250.025Ni0.60/1.5056166922-30℃用于600Mpa级高强钢结构的焊接及工程机械、集装箱、造船、车辆制造行业1.80.8Mo0.30/0.60(例值)(例值)(例值)54Cu0.50(例值)THQ-70CER70-G0.071.750.60.010.01Ni0.0267575821.6-30℃用于煤矿机械、建筑船舶车辆等及700Mpa级高强钢结构及低合金钢结构的焊接(例值)Cu0.0488Mo0.02Ti0.20V0.04Cr0.60THQ70-1ER70-G0.111.40/0.50/0.0250.025Ni1.20/1.5564075021-50℃用于700Mpa级高强钢结构的焊接及工程机械、集装箱、造船、车辆等制造业1.80.8Mo0.30/0.60(例值)(例值)(例值)74Cu0.50(例值)THQ70-3ER69-G0.121.25/0.40/0.020.02Ni0.50/1.00690610/16-20℃用于煤矿机械、建筑船舶车辆等及700Mpa级高强钢结构及低合金钢结构的焊接1.80.8Mo0.20/1.5570035Cu0.35THQ-80ER76-G0.11.25/0.40/0.0150.02Ni0.75/1.15660/76018-20℃用于Q690Mpa级高强钢的焊接1.80.8Mo0.30/0.6074068Cu0.35THQ80-1ER80-G0.091.550.50.010.012Ni1.3070082019-40℃用于800Mpa级高强钢结构的焊接及工程机械、集装箱、造船、车辆制造等行业(例值)Mo0.5072Cu0.025THG-80ER60-G0.041.360.470.0080.009Cr0.04263771322.6-10℃用于焊接AP151、X80及其它等同级别的管线钢或其它结构的焊接(例值)Ni0.80149Mo0.41-20℃Ti0.013145Cu0.10THG-100ER70-G0.071.380.360.0110.2Cr0.3276483424-20℃用于焊接AP151、X80及其它等同级别的管线钢或其它结构的焊接(例值)Ni1.4394Mo0.42Cu0.12THQ-R55B2ER55-B20.070.60.470.010.016Cr1.3852063524.4—采用富氩气体保护，可广泛用于工作温度520℃以下Cr1.25%-Mo0.5%的耐候钢(例值)Ni0.08Mo0.52Cu0.17THQ440-NQ-ⅡER44-G0.081.190.540.010.016Ni0.3236049028-40℃用于450MPa级耐大气腐蚀钢的焊接(例值)Cu0.2382Cr0.31THQ500-NQ-ⅡER50-G0.10.60/0.60.020.025Ni0.20/0.6040050022-40℃用于Q400NQR1及500MPa级耐大气腐蚀钢的焊接1.2Cu0.20/0.5060Cr0.30/0.90THQ550-NQ-ⅡER55-G0.11.20/0.60.020.025Cu0.20/0.5045055022-40℃用于Q450NQR1及550MPa级耐大气腐蚀钢的焊接1.6Cr0.30/0.9060Ni0.20/0.60THQ600-NQ-ⅡER60-G0.11.40/0.60.020.025Cu0.20/0.5050060022-40℃用于Q500NQR1及600MPa级耐大气腐蚀钢的焊接1.8Cr0.30/0.9060Ni0.20/0.80)