CHT711 flux cored wire in line with: GB / T10045 E501T-1 AWS A5.36 E71T-C1A0-CS1 described; CHT711 case of titanium slag system CO2 gas shielded 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 490Mpa grade high-strength steel welding, used for shipbuilding, machinery manufacturing, container, petrochemical, bridges and other steel welding. Deposited metal chemical composition (wt): C Mu Si SP standard values ??≤0.18 ≤1.75 ≤0.90 ≤0.03 ≤0.03 one case 040 0.055 1.35 0.009 0.020 mechanical properties of deposited metal: 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 535 440 32 110 X-ray testing requirements: II level reference current: (DC +) Electrode Diameter (mm) 1.0 1.2 1.4 1.6 Welding current (A) flat welding 90-120120-300 90-200120-280 150-380180-340 150-320180-380 fillet weld in vertical up welding, overhead welding 90-180 120-260150- 270180-280 150-320180-330 horizontal welding 90-200120-280 90-200200-280 vertical down welding 150-300250-300 Note: 1. The use of CO2 gas, CO2 gas purity above 99.98% . 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.