Low-Pressure Vessels Welding Flux (HJ-431) Welding Power

• state: Solid
• pH: Alkaline
• Type: Inorganic
• Melting Point: 301℃-400℃
• Chemical Composition: SiO₂>30%
• Function: Remove Oxides, Protect Weld Metal, Make the Liquid Solder Flow
• Model NO.: HJ-431
• Application: Submerged-arc Welding, Electroslag Welding
• Manufacturing Method: Smelting
• Feature: Excellent Welding Performance
• Application1: Remove Oxide From The Welding Surface
• Application2: Reduce The Melting Point of Solder
• Application3: Reduce Surface Tension
• Transport Package: 25kg/Bag
• Specification: Alloy Powder
• Trademark: EVERSIM
• Origin: China
• HS Code: 3810100000
• Production Capacity: 500000 Ton/Tons Per Month

Product Description

 Low-Pressure Vessels Welding Flux (HJ-431) welding power
 

(1)Specification:
AWS-A5.17  F6A0-EL8  F7A2-EM12K  EN760 SA CS 1 89 AC H5   

(2)Description:
SJ431 is an agglomerated calcium-silicate type welding flux. Basicity: 1. 0 (B//W) It is gray and round grain,mesh:10-40.Regularly shaped

welds are deposited without reduction of area or interface notches. Slag detachability is good. A short slag is produced, thus allowing 

circumferential welding on small-diameter workpieces without the risk of uncontrolled slag. The production of large pipes

(especially spiral pipe welding) is a typical application for this flux. Relatively high manganese pick-up is obtained,

thus allowing the flux to be used with wires with a low Mn content. 

(3)Applications: 
The flux is fit for the submerge-arc welding of low-carbon steel and low-alloy steel. Butt and flat fillet welding of miniature LPG tanks pipeline steel,ships,vehicles,agricultural implements,machinery,boilers,structural steels.

(4)Chemical Composition(%)

SiO2+TiO2	Al2O3+MnO	CaO+MgO	CaF2	S	P
25-35	30-40	15-25	5-15	≤0.05	≤0.05

 

(5)Mechanical Performance of the Deposited Metal

Wires	Standard Models	Yield Point Rel(MPa)	Tensile Strength Rm(MPa)	Elongation A (%)	Impact Value   Kv2(J)
EL8 EM12K	F6A0-EL8 F7A2-EM12K	≥350 ≥410	415-550 480-650	≥22 ≥30	≥40(0ºC) ≥60(-20ºC)

(6)The Instruction of usages:
Re-dried under 300-350ºC for 2 hours.
Rust,grease and moisture on the weldment should be removed before welding.

Description
Melting flux HJ431 is a molten high manganese, high silicon and low fluorine flux. It is a brown to light yellow glassy granule. The particle size is 8-40 mesh. It can be used for both AC and DC welding. The wire is connected to the positive pole for DC welding.
 
Uses
Used in conjunction with H08A, H08MnA, H10MnSi and other welding wires to weld low carbon steel and certain low alloy steel (e.g. 16Mn, 15MnV, etc.) structures such as boilers, ships, pressure vessels, etc. Can also be used for electroslag welding and copper welding
Flux reference composition (mass fraction) (%)

Mechanical properties of molten metal  (%)

 

Wire	Tensile Strength Rm (σb) MPa	Yield Strength ReH (δs) MPa	Elongation A (δ5) %	Charpy-V Impact Test (J)
F4A2-H08A	415~550	≥330	≥22	≥27
F4A2-H08MnA	415~550	≥330	≥22	≥27
F5A2-H10MnSi	480~650	≥400	≥22	≥27
F5A2-H10Mn2	480~650	≥400	≥22	≥27

 

1,300 ºC-  350ºC2.
2,,,.