CHK307 stainless steel electrode (G307) comply with: GB / T983 E430-15 AWS A5.4 E430-15 Description: CHK307 is a basic drug skin chromium stainless steel electrodes type, the use of DC power supply. Then the positive electrode, can be all-round welding. Uses: Used for welding corrosion (nitric acid), heat of Cr17 stainless steel structure. Deposited metal chemical composition (%) (wt) C Mn Si Cr Ni Mo Cu SP standard values ??≤0.10 ≤1.0 ≤0.90 15.0-18.0 ≤0.6 ≤0.75 ≤0.75 ≤0.03 ≤0.04 one case 0.063 0.52 0.76 17.10 0.14 0.13 0.034 0.004 Mechanical properties of deposited metal melt 0.018 :( sample 760 ℃ ~ 6790 ℃, heat 2h, not to exceed 55 ℃ / h speed with furnace cooling to 595 ℃ or less, then cooled to room temperature.) Tensile strength Pm (MPa) percentage elongation A (%) ≥450 ≥15 one case the standard value 55022 Reference current: (AC or DC) Electrode diameter (mm) 2.5 3.2 4.0 5.0 welding rod length (mm) 250 300 350 400 Welding current (A) 60- 8080-120 100-160150-200 Note: 1. 250 ℃ before welding electrodes shall be baked 1 hour, with the drying with the use. 2. The parts must be preheated before welding to 200 ℃.