Instruction and Application: Solder H06Mn35DR combined with the flux SJ208DR, SJ208DR is ultra low hydrogen sintering flux, alkalinity B > 2.0, is a circular granular shape, and the particle size is 2.0 ~ 0.28mm (10 ~ 60 mesh).The welding process is excellent, the weld metal is pure, the content of S and P is low, the mechanical property is good, especially the low temperature impact toughness is good.Applicable to “Coal Chemical Industry” and petrochemical industry - 100 ℃ low temperature steel pressure vessel welding, such as ASME SA 203 Gr. E (09 MnNiDR) submerged arc welding of steel.

Typical Chemical Composition of the wire(％)

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

Mechanical properties of 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).

Physical and chemical analysis of the flux(％)

H_D (Mercury method): ≤ 4.0ml/100g

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 below 150℃.