Method of welding high chromium austenitic stainless steel pipe and shielding gas mixture for welding
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United States of America Patent
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May 20, 2003
Issued Date -
N/A
app pub date -
May 3, 2001
filing date -
May 12, 2000
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Expired
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Abstract
Stainless steels are welded using a shielding gas including 88 to 98.9 mole % Ar, 1 to 10 mole % H.sub.2, and 0.1 to 2.0 mole % CO.sub.2. The shielding gas permits low sulfur, high chromium, austenitic stainless steel pipes to be joined with welds having sufficient penetration, strength, corrosion resistance and durability for practical use.
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