Magnesium AZ91E-F (UNS M11919)
AZ91E-F is a high-purity magnesium alloy commonly used in pressure-tight sand and permanent mold castings. It has excellent corrosion resistance and good mechanical properties, including high tensile strength and moderate yield strength.
| Chemical Composition | ||
|---|---|---|
| Element | Min | Max |
| Magnesium | 88.51% | 91.22% |
| Aluminum | 8.1% | 9.3% |
| Copper | 0.015% | |
| Iron | 0.005% | |
| Manganese | 0.17% | 0.35% |
| Nickel | 0.001% | |
| Silicon | 0.20% | |
| Zinc | 0.4% | 1.0% |
| Other | 0.30% | |
The following table provides a list of magnesium AZ91E-F properties in both SI and US customary/Imperial units.
Click on the icon 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
Magnesium AZ91E-F finds applications in various industries where lightweight, high-strength materials are desirable. Here are some common applications of Magnesium AZ91E-F:
- Automotive Industry: Magnesium AZ91E-F is widely used in the automotive sector. It is utilized in components such as engine blocks, transmission cases, intake manifolds, steering columns, and various structural parts.
- Aerospace Industry: Magnesium AZ91E-F is employed in aerospace applications where weight reduction is crucial. It is used in aircraft components like seat frames, instrument panels, brackets, and interior structures. However, specific certifications and testing are necessary for aerospace-grade applications.
- Electronics and Consumer Goods: The alloy's good machinability makes it suitable for electronics and consumer goods. It can be used in the production of laptop and smartphone casings, camera bodies, and other lightweight electronic devices.
- Power Tools and Equipment: Magnesium AZ91E-F's high specific strength and good vibration damping capacity make it valuable in power tools and equipment. It can be used to manufacture tool bodies, housing, handles, and gearboxes.
- Sporting Goods: Magnesium AZ91E-F is utilized in the production of sporting goods such as golf club heads, bicycle frames, tennis rackets, and fishing reels. The alloy's lightweight properties and strength-to-weight ratio contribute to improved performance.
- Medical Devices: In certain medical applications, Magnesium AZ91E-F can be used for lightweight implants, surgical instruments, and medical equipment. However, biocompatibility and specific regulatory requirements need to be considered for medical use.