Magnesium AZ91E-F (UNS M11919)
AZ91E-F is a high-purity magnesium alloy widely recognized for its excellent corrosion resistance and favorable mechanical properties. It exhibits high tensile strength and is commonly used in pressure-tight sand and permanent mold castings, making it an ideal choice for lightweight, durable components.
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| Chemical Composition | ||
|---|---|---|
| Element | Min | Max |
| Magnesium | 88.5% | 91.2% |
| Aluminum | 8.1% | 9.3% |
| Copper | —— | 0.015% |
| Iron | —— | 0.005% |
| Manganese | 0.17% | 0.35% |
| Nickel | —— | 0.001% |
| Silicon | —— | 0.2% |
| Zinc | 0.4% | 1.0% |
| Other | —— | 0.3% |
The following table provides a list of magnesium AZ91E-F properties in both SI and US customary/Imperial units.
Click on the button to switch between Metric and Imperial units.
| Physical Properties | Metric |
|---|---|
| Density | 1810 kg/m3 |
| Mechanical Properties | Metric |
| Tensile Strength (Ultimate) | 165 MPa |
| Tensile Strength (Yield) | 97 MPa |
| Fatigue Strength # of Cycles 5.0e+8 | 80 - 95 MPa |
| Young’s Modulus (E) | 45 GPa |
| Shear Modulus (G) | 17 GPa |
| Elongation at Break in 50 mm | 2.5% |
| Poisson’s Ratio (ν) | 0.35 |
| Brinell Hardness 500 kg load, 10 mm ball | 63 |
| Knoop Hardness Converted from Brinell | 84 |
| Rockwell Hardness | 66 |
| Vickers Hardness Converted from Brinell | 71 |
| Charpy Impact V-notch | 0.790 J |
| Thermal Properties | Metric |
| Melting Point Incipient Melting | ≥ 420 °C |
| Solidus | 470 °C |
| Liquidus | 595 °C |
| Thermal Conductivity | 72.7 W/m·K |
| Specific Heat Capacity (Cp) | 800 J/kg·K |
| Coefficient of Thermal Expansion (αL) | 26.0 1/°C |
| Heat of Fusion | 373 J/g |
The values in this table are approximate and can vary depending on various factors such as the specific manufacturing process and heat treatment applied to the alloy.
Advantages & Disadvantages of Magnesium AZ91E-F
| Advantages | Disadvantages |
|---|---|
| Lightweight | Corrosion susceptibility |
| High specific strength | Lower temperature resistance |
| Good machinability | Limited weldability |
| Damping capacity | Higher cost |
| Good castability | Fire hazard |
Applications of Magnesium AZ91E-F
AZ91E-F is utilized across diverse industries requiring lightweight and high-strength materials, with key applications including:
- Automotive Industry: Used in components such as engine blocks, transmission cases, intake manifolds, steering columns, and various structural parts.
- Aerospace Industry: Employed in aircraft components like seat frames, instrument panels, brackets, and interior structures, subject to specific certifications and testing.
- Electronics and Consumer Goods: Suitable for manufacturing laptop and smartphone casings, camera bodies, and other lightweight electronic devices due to good machinability.
- Power Tools and Equipment: Valued for high specific strength and vibration damping capacity in tool bodies, housings, handles, and gearboxes.
- Sporting Goods: Utilized in golf club heads, bicycle frames, tennis rackets, and fishing reels, enhancing performance through lightweight strength.
- Medical Devices: Applied in lightweight implants, surgical instruments, and medical equipment, with consideration for biocompatibility and regulatory requirements.