5.7 Nonferrous Electrode Classifications
The American Welding Society has produced the following booklets on nonferrous electrodes:
Al—aluminum Fe—iron
Ni—nickel
Cr—chromium Mn—manganese
Si—silicon
Cu—copper Mo—molybdenum
Sn—tin
There are three aluminum electrodes in the AWS A5.3 specification. They are the E1100, with an aluminum content of 99%; the E3003, with an aluminum content of about 96.7%, and the E4043, with approximately a 92.3% aluminum content.
The copper-based electrodes range in copper content from about 68.9% to 99%. ECuNi is the exception. It contains up to 33% nickel. The copper content is about 62%, with the remainder made up of other elements. The AWS classifications are shown below:
ECu ECuSn-C ECuAl-B
ECuSi ECuNi ECuNiAl
ECuSn-A ECuAl-A2 ECuMnNiAl
The nickel-based electrodes contain from 59% to 92% nickel. The exact chemical composition may be found in AWS A5.11. The eight AWS classifications are:
ENi-1 ENiCrFe-3
ENiCu-7 ENiCrFe-4
ENiCrFe-1 ENiMo-1
ENiCrFe-2 ENiMo-3
- AWS A5.3. Specification for Aluminum and Aluminum-Alloy Electrodes for Shielded Metal Arc Welding.
- AWS A5.6. Specification for Copper and Copper-Alloy Electrodes for Shielded Metal Arc Welding.
- AWS A5.11. Specification for Nickel and Nickel-Alloy Welding Electrodes for Shielded Metal Arc Welding.
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Al—aluminum Fe—iron
Ni—nickel
Cr—chromium Mn—manganese
Si—silicon
Cu—copper Mo—molybdenum
Sn—tin
There are three aluminum electrodes in the AWS A5.3 specification. They are the E1100, with an aluminum content of 99%; the E3003, with an aluminum content of about 96.7%, and the E4043, with approximately a 92.3% aluminum content.
The copper-based electrodes range in copper content from about 68.9% to 99%. ECuNi is the exception. It contains up to 33% nickel. The copper content is about 62%, with the remainder made up of other elements. The AWS classifications are shown below:
ECu ECuSn-C ECuAl-B
ECuSi ECuNi ECuNiAl
ECuSn-A ECuAl-A2 ECuMnNiAl
The nickel-based electrodes contain from 59% to 92% nickel. The exact chemical composition may be found in AWS A5.11. The eight AWS classifications are:
ENi-1 ENiCrFe-3
ENiCu-7 ENiCrFe-4
ENiCrFe-1 ENiMo-1
ENiCrFe-2 ENiMo-3