Copper (as CuO) -------------------> less than 0.01% m/m
- Lead (as PbO) -------------------> less than 0.01% m/m
- Nickle (as NiO) -------------------> 0.08% m/m
- Zina (as ZnO) -------------------> 0.02% m/m
- Total Iron (as FeO) -------------------> 28.4% m/m