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Helium vs Argon: Cost as shielding gases

  1. Sep 3, 2015 #1


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  2. jcsd
  3. Sep 3, 2015 #2


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  4. Sep 3, 2015 #3
    We use Argon.
  5. Sep 3, 2015 #4
    Given its rarity in the arm relative to Argon, you would think that it would be more expensive...

    Perhaps the tracking boom has increased supply?

    And then there is this?
  6. Sep 3, 2015 #5


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    The difference in price is not explained by atmospheric composition, (Ar 0.934%, He 0.000524% by volume), but by source.
    Argon comes from the atmosphere as a side line to oxygen production. Helium comes from natural gas wells.
    I quote; https://en.wikipedia.org/wiki/Helium_production_in_the_United_States
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