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.
ISRI-CODES:
200 No. 1 heavy melting steel.
Wrought iron and/or steel scrap 1/4 inch and over in thickness. Individual
pieces not over 60 x 24 inches (charging box size) prepared in a manner to
insure[...]