A specialist inert-gas option where helium's heat-transfer characteristics suit the joint and equipment.
Uses & selection
A specialist inert-gas option where helium's heat-transfer characteristics suit the joint and equipment.
Choosing a product
Confirm the exact process and machine capability with the gas supplier. Argon/helium mixtures may be a more practical comparison point.
What to check
Air Liquide notes less tolerance for error in manual welding than with easier-starting argon. Do not assume a direct replacement for argon without rechecking the procedure.
A silicon-alloyed filler option for many weldable 6xxx alloys and cast aluminium parts.
Uses & selection
A silicon-alloyed filler option for many weldable 6xxx alloys and cast aluminium parts.
Choosing a product
Identify the actual base alloy before choosing 4043. The manufacturer describes a fluid pool and reduced cracking sensitivity on compatible 6xxx alloys.
What to check
Aluminium fillers are not interchangeable across every alloy. Check the alloy chart, service conditions and finish requirement.
Compatible 5xxx aluminium alloys · Other compatible aluminium alloys
A magnesium-alloyed aluminium filler used where the base alloy and shear-strength requirement favour 5356.
Uses & selection
A magnesium-alloyed aluminium filler used where the base alloy and shear-strength requirement favour 5356.
Choosing a product
Check the base-alloy pairing and service temperature rather than selecting only by advertised strength. Use an aluminium-compatible feed system.
What to check
ESAB warns of stress-corrosion risk for 5xxx base alloys when weld-pool magnesium exceeds 3% and service temperature exceeds 65°C. Review the application with the filler supplier.
