No. Tempering metal is often desirable, and perfectly legal in every state.
The only explanation of tempering is in metal manufacturing. Heat metal to cherry hot, plunge metal into water to quickly cool metal, hardened metal is created
This is due to a process known as "Tempering." During procedural tempering a metal is strengthed and given flexibility. Throughout the years of metalwork - techniques have been discovered that increase a metal's ability to flex and stand up to stresses.
The Tempering was created in 1983.
The Tempering has 198 pages.
The ISBN of The Tempering is 0-8991-9152-5.
It depends on the amount of carbon the metal has. If the metal has too much carbon than it will become brittle. If it doesn't then it will harden. (A lot of tools go through this process called Tempering)
Tempering
molding
en 45 is a silicon mangenese spring steel, supplied in the as rolled contition. This steel is suitable for oil hardening and tempering.
No, it's a perfectly legal metal.
tempering
see black tempering and white tempering of white cast iron.