CHE507 (J507) comply with: GB E5015 considerable: AWS E7015 Description: CHE507 is a low hydrogen sodium type coating of carbon steel electrode, with excellent ductility, toughness and crack pregnant can, excellent welding performance, low spatter, forming beautiful, easy slag removal, can be all-position welding. Uses: Suitable for carbon or low-alloy steel 16Mn main components such as ship and ship A, B, D, E grade steel as well as the construction of boilers, pressure vessels, piping and other important pieces of welded steel. Deposited metal chemical composition (%): C Mn * Si SP Cr * Ni * Mo * V * - ≤1.60 ≤0.75 ≤0.035 ≤0.040 ≤0.20 ≤0.30 ≤0.30 ≤0.08 ≤1.75% with * the total element deposited metal Mechanical properties: Tensile strength (бb) MPa yield point (бs) MPa Elongation (δ5)% Akv impact energy (J) -30 ℃ ≥490 ≥400 ≥22 ≥27 drug skin moisture ≤0.6% X-ray detection Requirements: Class Ⅰ. Reference current: (DC +) electrode diameter (mm) 2.0 2.5 3.2 4.0 5.0 5.8 electrode length (mm) 300 300 350 400 400 400 Welding current (A) 50-80 70-110 100-140 140-180 180-230 220- 260 Note: ⒈ 350 ℃ before welding electrodes shall be baked 1 hour, with the drying with the use. ⒉ weldment before welding must remove oil, rust, moisture and other impurities. ⒊ using short arc welding method narrow channel.