AJ alloys

AJ alloys (AJ52 and AJ62) are die castable alloys of magnesium that have good creep resistance at high temperature. They contain magnesium, aluminum, and strontium.[1]

In the names the 'J' refers to Strontium.

Alloy   Mg     Al%  Sr%  Mn% 
AJ62  Balance  6    2    0.34   [2]
AJ52  Balance  5    2    0.4    [3]

AJ52 has higher creep resistance, and AJ62 has better castability. Both are used in the BMW magnesium–aluminum composite engine block.[4]

References

  1. ↑ M. Scharrer; et al. (2007). "Advances in Magnesium Injection Molding (Thixomolding)". In K. U. Kainer. Magnesium: Proceedings of the 7th International Conference on Magnesium Alloys and Their Applications. Wiley-VCH. p. 252. ISBN 978-3-527-31764-6.
  2. ↑ http://www.archivesmse.org/vol28_6/2865.pdf. MSE AJ62
  3. ↑ http://iweb.tms.org/Mg/magtech2002/018.pdf
  4. ↑ Helmut Kaufmann and Peter J. Uggowitzer (2007). Metallurgy and Processing of High-Integrity Light Metal Pressure Castings. Fachverlag Schiele & Schoen. p. 197. ISBN 978-3-7949-0754-0.


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