MRC:
The values/s/ of the element,compound,or mixture of which the composition is fabricated,excluding impurities.BBRC
Composition And Percentage:
90.40 by volume aluminum and 6.50 by volume silicon and 7.50 by volume silicon and 0.30 by volume magnesium and 0.50 by volume magnesium
MRC:
Limitations placed on specific impurities to make the item suitable for particular uses,expressed in percent.BBRF
Impurities Limitation In Percent:
Copper 0.20 pct, iron 0.40 pct, manganese 0.30 pct, titanium 0.20 pct, zinc 0.30 and other elements 0.05 pct ea, other elements total 0.15 pct
