Hardness of Common Magnesium Alloys
Magnesium alloys are known for their relatively low hardness compared to some other engineering materials. The following table provides a curated list of Brinell hardness (HB) values for common magnesium alloys.
All values are taken at room temperature (approximately 20°C or 68°F).
| UNS number | Composition | ||
|---|---|---|---|
| AM100A F | M10100 | Mg-9.5Al-0.3Zn | 53 |
| AS41A F | M10410 | Mg-4Al-1Si-0.35Mn | 63 |
| AS41XB F | Mg-4Al-1Si-0.35Mn | 63 | |
| AZ31B T1 | M11312 | Mg-3Al-1Zn | 46 - 73 |
| AZ61A F | M11610 | Mg-6Al-1Zn | 50 - 60 |
| AZ63 T1 | M11630 | Mg-6Al-3Zn-0.3Si | 50 |
| AZ80A T4 | M11800 | Mg-8Al-0.5Zn | 67 - 80 |
| AZ81A T1 | M11810 | Mg-8Al-0.5Zn | 55 |
| AZ91A F | M11910 | Mg-9Al-1Zn-0.1Mn | 60 - 63 |
| AZ91C T6 | M11914 | Mg-9Al-1Zn-0.1Mn | 62 - 77 |
| AZ92A T6 | M11920 | Mg-9Al-2Zn-0.3Si | 81 |
| EQ21 T6 | M16330 | Mg-1.5Ag-2Re | 65 - 85 |
| EZ33A T5 | M12330 | Mg-3Re-2.5Zn-0.6Zr | 50 |
| HK31A T6 | M13310 | Mg-3Th-0.6Zr-0.3Zn | 55 |
| HZ32A T5 | M13320 | Mg-2Zn-3Th-1Zr | 55 |
| M1A | M15100 | Mg-1Mn-0.3Cr | 42 - 54 |
| QE22A T6 | M18220 | Mg-2.5Ag-2Re-0.6Zr | 65 - 85 |
| WE43 T6 | M18430 | Mg-4Y-3.4Re-0.6Zr | 75 - 95 |
| WE54 T6 | M18410 | Mg-5.1Y-3Re-0.6Zr | 75 - 95 |
| ZC63 T6 | M16631 | Mg-5.5Zn-2.5Cu-0.5Mn | 55 - 65 |
| ZE41A T5 | M16410 | Mg-4.5Zn-1.5Re | 62 |
| ZE63A T6 | M16630 | Mg-6Zn-2.5Re | 60 - 85 |
| ZH62A T5 | M16620 | Mg-5.5Zn-2Th-0.65Zr | 70 |
| ZK51A T5 | M16510 | Mg-4.5Zn-0.45Zr | 62 |
| ZK60A T5 | M16600 | Mg-5.5Zn-0.45Zr | 65 - 82 |
The hardness values in this table are approximate and can vary depending on the specific composition and processing of each alloy.
Related Tables
References: 1) Cardarelli, François. Materials Handbook: A Concise Desktop Reference. Switzerland: Springer International Publishing, 2018.