Gas or no gas

  1. jrc2905 Member

    Posts: 5
    How does one tell if a wire requires the use of gas or is for no gas? thanks
  2. malcolm

    malcolm Bob the builder

    Posts: 8,386
    Bedford UK
    If it's new wire it should say in the literature or label. Generally anything described as flux cored wire is for use without gas.

    That wire you found was described as cored not flux cored, and would need to be used with gas.
  3. weldequip Member

    Posts: 5,074
    You can usually tell just by looking at it. Standard wire used with a shielding gas is normally copper coated & Flux-Cored, gas less has a dull grey appearance.
    Bear in mind that you can't just stick gas-less wire on any machine, it runs on a different polarity to standard wire & the machine must have the facilty to change this (two sockets for the earth lead marked - & +).
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