WE43
M18430Rare-earth magnesium alloy with yttrium (4%) and neodymium (2.25%) for exceptional high-temperature strength and creep resistance up to 300°C. Passed FAA flammability tests in 2015, lifting the ban on Mg in aircraft cabin interiors. Also biocompatible — used in biodegradable medical implants (stents, screws) with CE marking. Weldable (TIG). Used for helicopter gearbox casings, aircraft seat structures, engine components, racing wheels, and biomedical implants. The premium aerospace magnesium alloy.
International equivalents
| Flag | Standard | Country | Grade | Number | Match |
|---|---|---|---|---|---|
| 🇺🇸 | AMS | USA | AMS 4427 | — | REF |
| 🇺🇸 | ASTM | USA | ASTM B80 | — | 100% |
Sources: AMS 4427, ASTM B80
Mechanical properties — Pro
T6 (solution treated + artificially aged)
| Property | Value | Unit |
|---|---|---|
| Tensile Strength | ||
| Yield Strength | ||
| Elongation | ||
| Hardness HB |
General
| Property | Value | Unit |
|---|---|---|
| Density | ||
| Elastic Modulus |
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AM60B
M10602High-purity magnesium die casting alloy optimized for energy absorption and ductility. 6% Al content provides a balance between strength and elongation (8-12%), superior to AZ91D for crash-relevant parts. Excellent corrosion resistance through strict Fe/Ni/Cu control. Not weldable. Used for automotive seat frames, steering wheel cores, instrument panel supports, pedal brackets, and wheel components where impact resistance is critical. The ductile alternative to AZ91D. DIN: 3.5662, EN: MC 21230.
AZ91D
M11916The most widely used magnesium die casting alloy worldwide. High-purity variant (D suffix) with strict Fe, Ni, Cu limits for excellent corrosion resistance. 9% Al + 1% Zn provides good castability, strength, and dimensional stability. Density only 1.81 g/cm³ — 35% lighter than aluminum. Not weldable. Used for automotive transmission cases, engine covers, steering components, laptop and smartphone housings, power tool casings, and camera bodies. The industry standard for Mg die casting. DIN: 3.5912, EN: MC 21120.
AZ31B
M11311The most widely used wrought magnesium alloy. Available as sheet, plate, bar, and extrusion. 3% Al + 1% Zn gives good room-temperature strength and ductility with excellent weldability (TIG/MIG). Density 1.78 g/cm³. An alternative to aluminum where weight reduction is critical. Used for aircraft fuselage panels, electronic device housings (laptops, smartphones), lightweight jigs and fixtures, vibration-damping components, and rapid prototyping. Strain-hardened tempers (H24, H26) provide higher strength. DIN: 3.5312.
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