SAW Welding Flux

HL-HJ431 Submerged Arc Welding Flux

HJ431 is a fused high manganese, high silicon and low fluoride submerged arc welding flux for ships, pressure vessels, boilers and steel structures.

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Product Positioning

HJ431 is a fused high manganese, high silicon and low fluoride submerged arc welding flux for ships, pressure vessels, boilers and steel structures.

Particle size8-40 mesh / 0.45-2.5 mm
Flux typeFused flux

Suitable Applications

Ship structures
Pressure vessels
Boilers
Low carbon steel
Low alloy steel

Key Welding Performance Advantages

Stable arc with a wide voltage adjustment range
Easy arc starting without arc striking ball
Easy slag removal and uniform weld bead formation
Good hot crack resistance and certain moisture resistance

Compatible Welding Wires

H08A
H08MnA
Application-matched carbon steel wires

Typical Industries

Shipbuilding
Pressure vessel fabrication
Boiler manufacturing
Steel structures

Handling

Bake flux at 300-350 deg C for 2 hours before use.
Remove rust, oil, moisture and other contaminants from the workpiece before welding.
Confirm final wire, steel grade and welding parameters through procedure testing.

Technical Reference

Typical technical indicators are provided for buyer screening. Final values should be confirmed with the latest technical data sheet and buyer procedure testing.

Fused flux
High manganese-high silicon type
Low fluoride content

Chemical Composition Table

Typical flux composition indicators. Confirm current data before purchase.

Item	Typical range
SiO2 + TiO2	15-25%
CaO + MgO	25-35%
Al2O3 + MnO	20-30%
FeO	0%
CaF2	15-25%
S	<= 0.04%
P	<= 0.05%

Mechanical Properties Table

Typical deposited metal results depend on welding wire, steel grade, heat input and approved welding procedure.

Property	Typical result
Operating current	AC or DC; wire positive for DC
Voltage range	35-45 V
Weld formation	Uniform bead, low slag inclusion tendency
Deoxidation	Application dependent; wire selection required

Packaging and Delivery Information

Commercial terms for quotation discussion

Quotation details are prepared according to product model, order quantity, destination port and technical requirements. No retail amounts are shown on the website.

25 kg bagsMOQ: 25 tonsTrade term: FOBPayment: T/TDelivery time: typically around 30 days depending on destination

Inquiry CTA

Need HJ431 flux for your welding line?

Contact Xavier Ma to request a quote, technical data sheet, free sample discussion or application matching support.

FAQ

Common buyer questions about HJ431

Is HJ431 suitable for my welding application?

Share your steel grade, welding wire, plate thickness, welding current and target application. HeLi Welding can review whether HJ431 is a suitable starting option for testing.

Can I request a technical data sheet?

Yes. Use the inquiry form or technical data sheet button and include your company, country and intended application so the sales team can send the relevant product information.

Can this flux be matched with different welding wires?

HJ431 is commonly discussed with H08A, H08MnA and equivalent SAW wires. Final wire matching should be confirmed by welding procedure testing and buyer requirements.

What are the standard commercial terms?

Standard information provided for this preview: MOQ 25 tons, 25 kg bags, FOB trade term, T/T payment, and delivery typically around 30 days depending on destination.