AB16A2T

<U>Aluminum:</U>
Ar Good transfer, stable arc, little spatter. Removes oxides.
50%AR-50%HE Hot Arc 3/8" to 3/4" (10MM to 19MM) thickness. Removes oxides.
25%AR-75%HE Hot Arc, less porosity, removes oxides - 1/2" to 1" (13MM to 25MM)
HE Hotter, more gas, 1/2" (13MM) and up. Removes oxides.

<U>Magnesium:</U>
Ar Good cleaning.
75%He-25%AR Hotter, less porosity, removes oxides.

<U>Copper (deox.):</U>
75%HE - 25%Ar Preferred. Good wetting, hot.
Ar For thinner materials.

<U>Carbon Steel:</U>
CO2 Short circuiting arc: high quality, low current, out-of-position, medium splatter.
Ar-2%O2 Globular arc: fast, cheap, spattery, deep penetration.
Ar-5%O2 Fast, stable, good bead shape, little undercut, fluid weld pool.
75%Ar-25%CO2 Short Circuiting Arc: Fast, no melt-through, little distortion, and spatter.
50%Ar-50%CO2 Short Circuiting Arc: Deep penetration, low spatter.

<u>Low-Alloy Steel</u>
Ar-2%O2 Removes oxides, eliminates undercut, good properties.

<u>High-Strength Steels</u>
60%He-35%Ar-5%CO2 Short Circuiting Arc: Stable arc, good wetting and beed contour, little spatter. Good impacts.
75%Ar-25%CO2 Short Circuiting Arc: Same except low impact.

<u>Stainless Steel</u>
Ar-1%O2 No undercutting. Stable arc, fluid weld, good shape.
Ar-5%O2 More Stable Arc.
90%He-71/2%Ar-21/2%CO2 Short Circuiting Arc: Small heat-affected zone, no undercut, little warping.

<u>Nickle, monel</u>
Ar Good wetting, decreases fluidity.

<u>Inconel</u>
Ar-He Stable arc on thinner material.

Hope you guys enjoyed this installment, the more people want the more installments I will post, if I get no responses, I will discontinue posting up the information. So is it: or ?

Suprdave

Im gonna print this info...big thumb up.

AB16A2T

Check my other thread for even more information. I'll have a BUNCH more posts like these, coming in Series. I have tons of information to share, from my welding classes. I dunno how long it'll take to post it all, but I hope you guys and gals all benefit from it as much as I have.

https://honda-tech.com/zerothread?id=767755

Suprdave

PS: Does this apply to MIG and TIG?

AB16A2T

TIG(Tungsten Inert Gas) is also known as Gas Tungsten Arc Welding (GTAW) and MIG(Metal Inert Gas) is also known as Gas Metal Arc Welding(GMAW), and this is the general chart for arc welding, so yes I would have to say it applies to MIG and TIG.

Edit: Had to double check, to make sure.

hpfsi

great info

AB16A2T

Up for Saturday Morning People.