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Magnesium alloys designations are 2 letters representing the alloy elements, and 2 numbers indicating composition percent in round numbers, followed by a dash and a letter and a number indicating the temper.
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| Designation |
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| Alloying Elements: |
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| A: |
Aluminum |
| E: |
Rare Earths |
| H: |
Thorium |
| K: |
Zirconium |
| M: |
Manganese |
| Q: |
Silver |
| S: |
Silicon |
| T: |
Tin |
| Z: |
Zinc |
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Temper Designation:
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| F: |
Fabricated |
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| O: |
Annealed |
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| H10, H11: |
Strain hardened |
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| H23, H24, H26: |
Strain hardened and annealed |
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| T4: |
Solution heat treated |
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| T5: |
Artificially aged |
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| T6: |
Solution heat treated and artificially aged |
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| T8: |
Solution heat treated, cold worked, and artificially aged |
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