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  • Users: rcarr
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  1. rcarr

    Alloy 20 Corrosion in H2SO4

    The 3% Sulfuric prior to entering the stock line runs from 70 to 90deg F. The acid is mixing with 130deg F stock. The material is Columbium Stabalized.
  2. rcarr

    Alloy 20 Corrosion in H2SO4

    We have 3% Sulfuric Acid being injected into our Alloy 20 stock line. Downstream of the injection, the heat affected zones of some of the welds are being eaten away. Could this possibly be from the line not being pickeled and passivated after welding? Is this the right material for the...

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