Hey Clark, someone is posting about you here>
http://forums.accuratereloading.com/...3/m/9041044961 243win- The "service maximum average pressure" is 60,000 psi. Proof Cartridges 80,000 psi minimum average & 86,000 maximum average. Modulus of elasticity- Cartridge Brass-
Material is 70 copper/30 zinc with trace amounts of lead & iron , called C26000. The annealing temperature for this alloy is between 800 and 1400 F. Material starts to yield at 15,000 PSI when soft (annealed), and 63,000 PSI when hard.
Material yields, but continues to get stronger up to 47,000 PSI when soft, and 76,000 PSI
when work hardened. Modulus of Elasticity is 16,000,000 PSI. This means to pull a 1.000 inch long strip to 1.001 inch long induces a 16,000 PSI stress.
So if you pull a 1.000 inch strip to 1.005 inch long, you get about 76,000 PSI, which is the max obtainable.
SAAMI Link >
http://www.saami.org/specifications_...ex.cfm?page=CC
__________________
Photos>
http://photobucket.com/joe1944usa More Photos>
http://s338.photobucket.com/albums/n...0 Reloading/