... . C: Remove micro content of Al, Sb, Cu and Bi,Pb. High Quality China Calcium Al Alloy SpecificationsA: In Metallurgical IndustryB: As reducing angent ... .5%min, Mg: 0.5%max, Cu: 0.005%max, Fe: 0.05%max, Ni: 0.0005%max, Mn: 0.05%max ... .5%min, Mg: 0.5%max, Cu: 0.005%max, Fe: 0.05%max, Ni: 0.0005%max, Mn: 0.05%max ...