Andrew Gillis wrote:
> Lastly (vintage content!), I was told years ago that Reynolds 753
> obtained its improved tensile strength because additional carbon was
> added to the formulation, in addition to the heat treating process.
A Reynolds rep told me many years ago that the formulation of 753 was identical to 531; the difference being the thinner walls and heat treatment in 753.
-John Thompson (email@example.com)
Appleton WI USA