ELECTRODE SELECTION GUIDE
The number which follows each material is the RWMA (Resistance Welder  Manufacturers' Association) number of the electrode which would normally be placed against that material.  For Example, when welding Alumel to Consil, a RWMA -2 electrode should be used on the Alumel side, and a RWMA -11 on the Consil side.  Not all combinations have been tried successfully.
Material	RWMA Electrode Type
Alumel	-2
Aluminum	-1
Aluminum Alloys	-1
Beryllium Copper	-2
Brass	-2,  -11
Brass, Tinned	-14
Bronze	-2
Cadmium Plating	-1
Chromel	-2
Consil	-11
Constantin	-2
Copel	-2
Copper	-14
Copper, Tinned	-14
Dumet	-2
Dumet, Gold Plated	-2
Evenohm	-14
Gold	-11
Hastalloy	-2
Inconel	-2
Invar	-2
Iridium	-2
Iron	-2
Karma	-2
Kovar	-2
Kovar, Gold Plated	-2
Kulgrid	-2
Magnesium	-1
Manganin	-2
Molybdenum	-2
Nichrome	-2
Nickel	-2
Nickel Alloy	-2
NiSpan C	-2
Nioblum	-2
Paliney 7	-2
Palladium	-14
Platinum	-2
Rhenium	-2
Silver	-11
Steel, Cold Rolled	-2
Steel, Stainless	-2
Tantalum	-2
Titanium	-2
Tungsten	-2
Zinc	-14