Recommended shielding gases for TIG-welding (Topic: 18012) AC TIG-welding: Argon or Argon/Helium mixtures on thicker sections DC TIG (electrode negative) Helium It is of great importance that the gas purity is very high: 99,998% for argon and 99,995 for helium.
DC TIG (electrode negative) Helium
It is of great importance that the gas purity is very high: 99,998% for argon and 99,995 for helium.
Recommended shielding gases for TIG-welding (Topic: 18012)