Matweb has given the following for C85400:
Leaded yellow brass, No. 1 yellow brass, 67-1-3-29, CA 854, ASTM B30 (CA854), ASTM B271, ASTM B584; ASTM B146-6B, SAE J462, Ingot code no. 400, FED QQ-C-390, MIL-C-15345 (Alloy 23).
For C85700:
Leaded naval brass, leaded yellow brass, 63-1-1-35, CA 857, ASTM B30 (CA857), ASTM B271, ASTM B584; ASTM B146-6C, SAE J462, Ingot code no. 406, FED QQ-C-390, MIL-C-15345 (Alloy 3)
I hope this helps.
Rao