OK76.98为一款适合焊接诸如T91/P91等改性9Cr钢的低氢焊条。该焊条适用于管道和板材的全位置焊接。在此所列的机械性能参数为750°C热处理两小时之后测得。TypicalTensilePropertiesPWHT755°C2hElongationTensileStrengthYieldStrength保护气体StressRelievedTemperatureStressRelievedTestingTime21%820MPa720MPaISO--StressrelievedElongationTensileStrengthYieldStrength保护气体StressRelievedTemperatureStressRelievedTestingTime---ISO760°C3hrPWHT755°C2hElongationTensileStrengthYieldStrength保护气体StressRelievedTemperatureStressRelievedTestingTime---AWS--夏比V型缺口冲击性能PWHT755°C2hImpactValueTestingTemperature保护气体StressRelievedTestingTempStressRelievedTestingTime50J20°CISO--StressrelievedImpactValueTestingTemperature保护气体StressRelievedTestingTempStressRelievedTestingTime-20°CISO760°C3hr焊缝金属分析MnMnMoCNbSiVNiCr0.8%-------MoMnMoCNbSiVNiCr-1%------CMnMoCNbSiVNiCr--0.1%-----NbMnMoCNbSiVNiCr---0.06%----SiMnMoCNbSiVNiCr----0.35%---VMnMoCNbSiVNiCr-----0.24%--NiMnMoCNbSiVNiCr------0.7%-CrMnMoCNbSiVNiCr-------9%熔敷数据Fusiontimeperelectrodeat90%Imaxkgweldmetal/kgelectrodesNumberofelectrodes/kgweldmetal安培熔敷率电压V直径56sec0.66kg71.470-100A0.90kg/h21V2.5x350mm68sec0.60kg45.590-135A1.20kg/h22V3.2x350mm85sec0.64kg22.6130-200A1.90kg/h23V4.0x450mm)