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alloy 20
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hardhatdiver
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    Thu Oct 30, 2014 7:56 pm

Tig welding alloy 20 pipe. Is the use of backing gas suggested? I will be using er320lr for filler.
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taz
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    Mon May 26, 2014 12:43 pm
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Use of backing gas is mandatory for this type of materials.
ER320lr is suitable but we have also welded alloy 20 successfully using ERNiFeCr-1.
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hardhatdiver
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    Thu Oct 30, 2014 7:56 pm

I figured I need to. Thanks
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hardhatdiver
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    Thu Oct 30, 2014 7:56 pm

Pics of how the welds came out.
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1110140553 (2).jpg (28.48 KiB) Viewed 778 times
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Very nice!

Steve S
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