our factory have exporttedwelding electrodefor about 40years. C Mn Si S P 0.12 0.3-0.6 ≤0.35 ≤0.035 ≤0.040 Test item Tensile strength MPa Yield strength MPa Elongation Impact value(J) Guaranteed ≥420 ≥330 ≥17 Tested 460-540 340 18-26 50-75 X-ray radiographic inspection: grade Weld rod diameter(mm) 2.5 3.2 Welding current(A) 50-90 90-130