Magnesium Alloy Grades
Magnesium alloys are primarily categorized based on their composition and mechanical properties. Common grades include:
- AZ31B: Mg-3%Al-1%Zn. Known for good strength, excellent formability, and weldability.
- AZ61A: Mg-6%Al-1%Zn. Offers higher strength and better corrosion resistance than AZ31B.
- AZ91D: Mg-9%Al-1%Zn. High strength and excellent castability.
- AZ80A: Mg-8%Al-0.5%Zn. High strength and good corrosion resistance.
- ZK60A: Mg-6%Zn-0.5%Zr. High strength and good fatigue resistance.
- WE43: Mg-Y-RE (Yttrium, Rare Earth). Exceptional strength-to-weight ratio and high-temperature performance.
- ME20M: Mg-2%Nd-0.2%Mn. High strength and creep resistance
Dimensions & Specifications
Sheets & Plates
Thickness:
- Sheets: 0.3 mm to 7.9 mm
- Medium Plates: 8 mm to 15 mm
- Thick Plates: 15 mm to 200 mm
- Width: Up to 3000 mm
- Length: Customizable as per requirements
Coils
- Thickness: 0.5 mm to 2.7 mm
- Width: Up to 240 mm
- Length: Customizable
These products are manufactured in various tempers, including O (annealed), H24 (half-hard), and H26 (three-quarters hard), adhering to standards like ASTM B90 and AMS 4375/4377
Mechanical Properties
Mechanical properties vary based on the alloy and temper. Here’s an overview:
| Alloy | Temper | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) |
| AZ31B | O | 230–290 | 170–210 | 10–24 |
| AZ61A | F | 270–390 | 190–240 | 9–15 |
| AZ80A | T5 | 330–360 | 230–250 | 8–10 |
| ZK60A | T5 | 300–340 | 200–230 | 10–12 |
| WE43 | T5 | 290–320 | 200–220 | 8–10 |
| ME20M | F | 250–270 | 170–190 | 15–21 |
Note: Values are approximate and can vary based on specific processing and manufacturing conditions.
Applications
Magnesium sheets, plates, and coils are utilized across various industries:
- Aerospace: Structural components, airframes, and helicopter parts.
- Automotive: Body panels, transmission cases, and engine blocks.
- Electronics: Laptop and mobile phone casings, camera bodies.
- Medical: Biodegradable implants, surgical tools.
- Industrial Machinery: Gear housings, machine parts
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