Matrial Compatibility for Electrodes

  Workpiece Material Recommended Electrode Class(es)
Similar Ferrous Metals Chrome Plate 2
  Cold-Rolled Steel 2
  Galvanized Steel 1 ,2, 20
  Stainless Steel 2, 3
  Terne Plate 1, 2, 20
  Tin Plate 1, 2, 20
Similar Non Ferrous Metals Aluminum & Al Alloys 1, 2
  Bronze 2
  Copper  13, 14
  Cupronickel 2
  Magnesium 2
  Nickel & Nickel Alloys 2
  Nickel-Silver 2
  Phosphor Bronze 2
  Red Brass 2
  Silicon 13,14
  Titanium 1, 2
  Yellow Brass 2
Refractory Metals Tungsten Molybdenum 2

Reference:

American Welding Society Publication J1.3