ER308
Most frequently used for base metals of similar composition.
ER308L
Similar usage as the above, but the 0.03% maximum carbon content increases resistance to intergranular corrosion.
ER308LSi
Similar usage as the above, but the 0.65-1.00% silicon content improves wash and wetting behavior in the gas shielded welding processes.
ER309
Used for welding similar alloys in wrought or cast form; occasionally used for welding 18-8 base metals when severe corrosion conditions exist; and, at times, welding dissimilar steels.
ER309L
Similar usage as 309 bare, but the 0.03% maximum carbon content increases resistance to intergranular corrosion.
ER309LSi
Similar usage as the above, but the 0.65-1.00% silicon content improves wash and wetting behavior in the gas shielded welding processes.
ER310
Similar usage as the above, but the 0.65-1.00% silicon content improves wash and wetting behavior in the gas shielded welding processes.
ER312
Most frequently used to weld base metals of similar composition.
ER316
Usually used for welding similar alloys (containing about 2% molybdenum); also for high temperature service applications.
ER316L
Used principally for welding molybdenum-bearing austenitic alloys containing 0.03% maximum carbon.
ER316LSi
Similar usage as the above, but the 0.65-1.00% silicon content improves wash and wetting behavior in the gas shielded welding processes.
ER317L
The alloy content is somewhat higher than for ER 316,particularly in molybdenum. The maximum 0.03% carbon content increases resistance to integranular corrosion due to carbide precipitation.Severe corrosion resistance to sulfuric and sulfurous acids and their salts.
ER347
A stabilized 18-8, 19-9 alloy that is not subject to intergranular corrosion due to carbide precipitation.
ER410
Used for welding alloys of similar compositions; also for overlays on carbon steels to resist corrosion, erosion or abrasion. Usually requires preheat and postheat treatments.
