OK76.28是一款适用于焊接含约2.25Cr-1Mo抗蠕变钢的LMA焊条。该焊条可产生稳定的电弧，飞溅损失***。OK76.28可熔敷具有优异抗裂纹性能的焊缝金属。焊缝金属的结垢温度约为625°C。TypicalTensilePropertiesPWHT690°C1hElongationTensileStrengthYieldStrength保护气体21%720MPa630MPaISO---AWS夏比V型缺口冲击性能PWHT690°C1hImpactValueTestingTemperature保护气体130J20°CISO焊缝金属分析MnMnMoCSiCr0.7%----MoMnMoCSiCr-1.1%---CMnMoCSiCr--0.06%--SiMnMoCSiCr---0.3%-CrMnMoCSiCr----2.2%熔敷数据Fusiontimeperelectrodeat90%Imaxkgweldmetal/kgelectrodesNumberofelectrodes/kgweldmetal安培熔敷率电压V直径40sec0.58kg136.055-80A0.7kg/h23V2.0x300mm52sec0.58kg88.070-110A0.8kg/h25V2.5x300mm62sec0.59kg49.095-150A1.2kg/h26V3.2x350mm88sec0.64kg23.0130-190A1.8kg/h28V4.0x450mm92sec0.64kg14.5150-260A2.7kg/h29V5.0x450mm90sec0.64kg10.5200-350A3.9kg/h30V6.0x450mm)