HJ431 is a kind of fused glassy granulated flux, colored as red-brown to light-yellow, with high manganese and silicon but low fluoride, These are three types of grain size: mesh 8-14(that is 2.5-1.5mm), 8-40(that is 2.5-0.38mm) and 14-40(that is 1.5-0.38mm). Either alternating or direct current can be used while welding wire nust be connected with the positive electrode when direct current is used. With high-standard technology HJ431 has good welding performance.

♦Application

When applied with welding wire such as H08A, H08MnA, H10Mn2 or H10MnSi, HJ431 can weld low carbon steel and some low alloy steel like 16Mn and 15MnV, as well as ships, boilers and low pressure vessels. And it can be used for electroslag welding and copper welding.

Chemical Compostion of HJ431(%)

SiO2+TiO2	CaF2	AI2O3+MnO2	CaO+MgO	FeO	S	P
40-44	3-17	35-42	7-14	≤1.80	≤0 .06	≤ 0.08

Mechnaical properties of the deposited metal

Tested Items

Yield point

Σs(Mpa)

Tensile strength

Σb(Mpa)

Elongation

Δ5(%)

Impact value AKV(-20°C)

(J)

Average Results

≥ 340

420-550

≥ 22%

≥ 34

♦ Cautions

1) The oil soil. mositure.iron rust and other foreign substances must be removed from the surface before welding.

2) The welding flux must be baked for 2 hours at the temperautre of 300-400°C before build-up welding.