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MG 4R
MG 4R is a low magnesium
alloy that contains relatively high levels of Rare Earth elements.
Due to the relatively low Magnesium level, the alloy is not as reactive
as 6% MgFeSi alloys. The higher levels of Rare Earths provide nodulizing
effects so that ductile irons can be produced with somewhat lower Magnesium
residuals compared to 6% Mg, 1% TRE alloys. MG 4R is useful in the
Flo-Tret process.
Specifications
| Chemical
Analysis: |
| Silicon |
43.0-48.0% |
| Magnesium |
4.00-4.50% |
| Calcium |
0.80-1.30% |
| Aluminum |
1.20%
max. |
| TRE |
1.50-2.00% |
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| Sizing: |
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| Effective
Date: 6/13/08 |
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