Instruction and Application: H10Cr2MoG welding wire and flux SJ150 SJ150 alkali fluoride-type flux, rounded particles, particle size is 2.0~0.28mm (10~60mesh). Impurities such as S and P elements in the weld metal and diffusible hydrogen content and crack resistance, good toughness at low temperature temper embrittlement of low sensitivity, has good resistance to thermal oxide and hydrogen, sulphur corrosion. Apply to the petroleum refining, petrochemical, coal conversion, steam turbine cylinder, thermal power, nuclear energy, and other large equipment for hydrogenation reactor of welding ASME SA387 Gr. 22 Class 2 (12Cr2Mo1R). Suitable for narrow gap welding.

Typical Chemical Composition of the wire(％)

Typical Chemical Composition of the all-weld metal(％)

Mechanical properties of All-weld metal 

Note: Temper embrittlement test VTr54+2.5△VTr54≤10℃.

*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

Physical and chemical analysis of the flux(％)

All-weld metal radio-graphic testing:

According to NB / T 47013.2, 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.Redry the flux at 300-350℃ for 2 hours.

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

3.Multi-pass welding must clean the welding slag. Each layer is controlled into 180℃ to 250℃.