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Hardness testing for steel tubing

Hardness testing for steel tubing

Hardness testing for steel tubing

(OP)
We're using a 3/8" OD, 0.89" wall thickness steel tube per specification SAE J526.  We've found some forming issues with this, which subsequently made us look to the hardness.  SAE J526 calls out a (Rockwell 30T) 65max.
Does this hardness maximum also apply to the weld seam area?  There are no exemptions granted in the specification, but is this standard practice?

Thanks!

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