Contact us now for HMS1&2 (80:20) and HMS1 (100%) Steel scraps shall be considered free of alloys when the residual alloying elements do not exceed the following percentages: percent Nickel ( 0.45 ) Chromium ( 0.20 ) Molybdenum ( 0.10 ) Manganese ( 1.65 ) The combined residuals other than manganese shall not exceed a total of 0.60 percent