CHT711M flux cored wire in line with: GB / T10045 E501T-1M AWS A5.36 E70T1-C21A0-CS1 described; CHT701 case of titanium slag system of mixed gas shielded arc welding flux cored wire. Excellent welding performance, stable arc, little spatter, easy slag removal, weld appearance, excellent all-position welding performance can also be vertical down welding. Uses: Suitable for nuclear power engineering 490Mpa grade mild steel and high-strength steel welding. Deposited metal chemical composition (wt): C Mu Si SP standard values ??≤0.18 ≤1.75 ≤0.90 ≤0.03 ≤0.03 1.30 0.40 0.009 0.018 0.055 one case of deposited metal mechanical properties: Tensile strength Rm (MPa) yield strength ReL (MPa ) percentage elongation A (%) at room temperature impact energy KV2 (J) standard values ??≥480 ≥400 ≥22 ≥27 one case 540 450 30 120 X-ray testing requirements: II level reference current: (DC +) Electrode Diameter (mm) 1.2 Welding current (A) flat fillet weld welding 120-300 120-280 vertical upward welding, overhead position welding 120-260 horizontal welding vertical down welding 200-280 120-280 Note: 1. The use of CO2 gas, CO2 gas purity 99.98 % the above. 2. When welding CO2 shielding gas flow rate should be controlled at 20-25L / min. 3. The extension length of the wire is controlled within the range of 15-25mm.