Pre-League MACH4 14Kt Casting

With l`aggiunta of 7.5% of Silver:

Melting Temperature: 928 ° C
P.S .: 13,10 Kg / dm³
HB (Brinell hardness): 170
Corresponding to the color composed as follows: Au 585 Ag 75 Cu 340
Color: Red russia

Pre alloy for casting.