Instruction and Application: High-strength steel gas-shielded flux-cored wire, with high strength and low temperature toughness, good arc stability, can be welded under large current and high deposition efficiency. For high strength requirements for welding of pressure vessels and other structures, such as pressure vessels SA-516Gr70 and other material with similar components.

Typical Chemical Composition of the wire(％)

Mechanical Properties of the all-weld metal(％)

*In practice, the heat treatment system shall be formulated separately by the supply and demand parties or by the conditions of the working conditions (such as the thickness of the specimen).

H_D (Mercury method): ≤ 4.0ml/100g

All-weld metal radio-graphic testing:

According to NB / T 47103.2, the radio-graphic detecting technique should not be less than class AB and the quality grade of all-weld metal should not be less than Class I.

Reference range (DC^-)

Notice：

1. Cleaning the oil stain, rust and moisture of the welding surface before welding.

2. The interpass temperature should be controlled to below 150°C.

3. Operate with short arc would be better, arc length controlled to among 1~3mm.