| MAGNESIUM ALLOYS | |||||||||||||||||||
CHEMICAL COMPOSITION LIMITS ( In Per Cent) |
MINIMUM MECHANICAL PROPERTIES | ||||||||||||||||||
Alloy |
Cu. Max. | Al | Zn | Mn Min. | Si Max. | (1) Rare Earth | Zr | Ni Max. | Ag | Mg | Fe Max. | Y | Others Total Max. | Temper | Yield Str. (PSI) | Tensile Str. (PSI) | Elong % in 2 In. | (2) BH HB/ 10/500/30 | |
| AZ81A | 0.10 | 7.0-8.1 | .40-1.0 | 0.13 | 0.30 | -- | -- | 0.01 | -- | Rem. | -- | -- | 0.30 | -T4 | 11,000 | 34,000 | 7.00 | 56 | |
| AZ91E | 0.03 | 8.1-9.3 | .40-1.0 | .17-.35 | 0.30 | -- | -- | 0.001 | -- | Rem. | 0.005 | -- | 0.30 | -F | 11,000 | 23,000 | -- | -- | |
| -T4 | 11,000 | 34,000 | 7.00 | -- | |||||||||||||||
| -T5 | 12,000 | 23,000 | 2.00 | -- | |||||||||||||||
| -T6 | 16,000 | 34,000 | 3.00 | 65-85 | |||||||||||||||
| AZ91C | 0.10 | 8.1-9.3 | .40-1.0 | 0.13 | 0.30 | -- | -- | 0.10 | -- | Rem. | -- | -- | 0.30 | -F | 11,000 | 23,000 | -- | -- | |
| -T4 | 11,000 | 34,000 | 7.00 | -- | |||||||||||||||
| -T5 | 12,000 | 23,000 | 2.00 | -- | |||||||||||||||
| -T6 | 16,000 | 34,000 | 3.00 | 65-85 | |||||||||||||||
| AZ92A | 0.10 | 8.3-9.7 | 1.6-2.4 | 0.10 | 0.30 | -- | -- | 0.01 | -- | Rem. | -- | -- | 0.30 | -F | 11,000 | 23,000 | -- | -- | |
| -T4 | 11,000 | 34,000 | 6.0 | -- | |||||||||||||||
| -T5 | 12,000 | 23,000 | -- | -- | |||||||||||||||
| -T6 | 18,000 | 34,000 | 1.0 | 70-95 | |||||||||||||||
| -T7 | 16,000 | 33,000 | 1.0 | -- | |||||||||||||||
| EZ33A | 0.10 | -- | 2.0-3.1 | -- | -- | 2.5-4.0 | .50-1.0 | 0.10 | -- | Rem. | -- | -- | 0.30 | -T5 | 14,000 | 20,000 | 2.00 | 48-60 | |
| ZE41A | 0.10 | -- | 3.5-5.0 | -- | -- | .75-1.75 | .40-1.0 | -- | -- | Rem. | -- | -- | 0.30 | -T5 | 19,500 | 29,000 | 2.50 | 55-70 | |
| KIA | -- | -- | -- | -- | -- | -- | .40-1.0 | -- | -- | Rem. | -- | -- | 0.30 | F | 6,000 | 24,000 | 14.0 (3) | -- | |
| (1) Rare earths in alloys EZ33A and ZE41A are in the form of a Cerium-Based mischmetal. | These limits are based on Federal | ||||||||||||||||||
| (2) BHN values for information only. Castings shall not be rejected on the basis of hardness if the other mechanical properties meet the required minimums. | Specification QQ-M-56, Magnesium | ||||||||||||||||||
| (3) Results have shown this minimum elongation to be marginal. 10% would be a more practical minimum elongation. | Alloy, Sand Castings, and ASTM B80 | ||||||||||||||||||
| "Magnesium Alloy Sand Castings." | |||||||||||||||||||