On Jan 2, 3:28 pm, "Phil" wrote:
Jim , if my memory serves me correctly , the Straw color that you are
referring to is called Tempering , if you would bring a piece of High Carbon
Steel like a chisel or other tool up to red color and quench it in oil , it
would be very hard and have very little ductility , the reheating or
tempering to what I remember was about 450 deg. would make the part more
serviceable and less likely to shatter , the cherry red that we use to
finish out our TIG welds has somewhat the same effect except that it helps
to bring the entire cluster back to the original 90 ksi and removes the
push-pull and strain that is locked in for 1000 yrs. or so.

Exactly. A cold chisel also has about 1% carbon in it. It's a
totally different thing than welding low-carbon steels.

Dan