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rod question
Posted: Sun Jan 08, 2012 11:34 pm
by nova_70_383
what is the basic difference between er70s2 and er70s6?
Re: rod question
Posted: Mon Jan 09, 2012 3:27 am
by weldin mike 27
Hi there,
s6 rod has higher silicon content, mainly to act as a scavenger to attract crud in the weld pool. Better for dirtier steels.
(Edited to save on embarrassment at not remembering something from first year of apprenticeship.) The same is true for mig wire. Thats what i believe.
Mick
Re: rod question
Posted: Mon Jan 09, 2012 8:34 pm
by jpence38
ER70S-2 contains zirconium, titanium, and aluminum in addition to silicon and manganese. Produces x-ray quality welds primarily for root passes on pipe. Metal has to be very clean.
ER70S-6 contains high levels of silicon and manganese for use on slightly contaminated base materials. Better deoxidizer. Has better puddle fluidity and better wetting action.
ER = Electrode or Rod
70 = Tensile strength in ksi
S = Solid (not hollow)
-2 = Chemical composition
Re: rod question
Posted: Tue Jan 10, 2012 1:42 am
by weldin mike 27
Hi there,
Post removed for being weak as piss.
Mick
Re: rod question
Posted: Tue Jan 10, 2012 8:33 am
by jpence38
Re: rod question
Posted: Wed Jan 11, 2012 1:13 am
by weldin mike 27
Hi there,
When I first used s6 mig wire after using s4, i noticed that it didn't run as smoothly. Don't have s6 tig wire so can't compare to s4. We use s2 on a particular job to help control spatter. s2 mig and tig wire are the same.
Mick
