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AS 630

Submerged Arc Welding (SAW)

Fully basic agglomerated submerged arc welding flux


AS 630 is a fully basic agglomerated submerged-arc welding flux that is is recommended for applications requiring an extremely low concentration of phosphorus and sulphur in the weld metal, especially for high tensile steels and for joints requiring high toughness at sub-zero temperatures and resistance to ageing. AS 630 can also be used for the welding of structural and fine grained low alloy steels requiring high integrity welds with low temperature impact and CTOD fracture toughness properties. The flux is widely used for the welding of thick section components in the offshore, nuclear and pressure vessel industries. The flux exhibits a low hydrogen content in the as manufactured condition and gives a high resistance to moisture pick-up during exposure under workshop conditions. The flux promotes a very stable arc characteristic during use with excellent slag detachment. The weld is of a uniform even profile with regular fine ripple formation and smooth toe blending. AS 630 flux is suitable for use with DC+ or AC and is ideal for single wire, twin wire, tandem arc [DC+/AC] and other multi-arc systems using up to 1000A with single wire welding.


  • Extremely clean weld metal deposit
  • Excellent impact and CTOD properties
  • Highly resistant to moisture pick-up


Warning -

Cancer and Reproductive Harm -


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