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NADCA specifications change magnesium content for 380 and A380 aluminum alloys.

The North American Die Casting Association (NADCA), Wheeling, Ill., has announced revised specifications increasing the magnesium content to 0.30% from 0.10% for aluminum alloys 380 and A380.

The increased level of magnesium will have a positive environmental effect by reducing the amount of chlorine used to control the magnesium level, while also slightly reducing the production cost for alloy producers. Increased magnesium content in the alloy also improves the ability to machine cast parts.

Magnesium limits of 0.30% require approximately 40 to 50% less chlorine than alloys with 0.10% magnesium, depending upon the raw material being used. Less chlorine, combined with less land-filling of magnesium chloride, could bring the cost of production down by $0.0025 per lb. While this is not a significant reduction in overall cost, it is an incremental step to lower costs for products made in the U.S., improving domestic competitiveness with other countries.
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Title Annotation:North America
Publication:Modern Casting
Date:Aug 1, 2006
Words:153
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