Magnesium AZ91D-F (UNS M11916)
AZ91D-F is a high-purity magnesium alloy that is commonly used in die casting applications. It is known for its excellent combination of mechanical properties, corrosion resistance, and castability.
| Chemical Composition | ||
|---|---|---|
| Element | Min | Max |
| Magnesium | Remainder | |
| Aluminum | 8.3% | 9.7% |
| Copper | 0.03% | |
| Iron | 0.005% | |
| Manganese | 0.13% | |
| Nickel | 0.002% | |
| Silicon | 0.10% | |
| Zinc | 0.35% | 1.0% |
The following table provides a list of magnesium AZ91D-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) | 230 MPa |
| Tensile Strength (Yield) | 150 MPa |
| Compressive Strength (Yield) | 165 MPa |
| Fatigue Strength # of Cycles 5.0e+8 | 97 MPa |
| Shear Strength | 140 MPa |
| Young’s Modulus (E) | 44.8 GPa |
| Shear Modulus (G) | 17 GPa |
| Elongation at Break in 50 mm | 3% |
| Poisson’s Ratio (ν) | 0.35 |
| Brinell Hardness 500 kg load, 10 mm ball | 63 |
| Knoop Hardness Converted from Brinell | 84 |
| Rockwell Hardness | 75 |
| Vickers Hardness Converted from Brinell | 71 |
| Charpy Impact V-notch | 2.70 J |
| Thermal Properties | Metric |
| Melting Point Incipient Melting | ≥ 421 °C |
| Solidus | 470 °C |
| Liquidus | 595 °C |
| Thermal Conductivity | 72.7 W/m·K |
| Specific Heat Capacity (Cp) | 1047 J/kg·K |
| Coefficient of Thermal Expansion (αL) | 26.0 1/°C |
| Heat of Fusion | 373 J/g |
| Electrical Properties | Metric |
| Electrical Resistivity | 1.43×10-5 Ω·cm |
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 AZ91D-F
| Advantages | Disadvantages |
|---|---|
| Lightweight | Flammability |
| Good castability | Corrosion susceptibility |
| High damping capacity | Limited temperature range |
| Excellent machinability | Higher cost |
| Good dimensional stability | Limited availability |
Applications of Magnesium AZ91D-F
Magnesium AZ91D-F finds application in various industries due to its desirable properties. Here are some common applications of Magnesium AZ91D-F:
- Automotive Industry: The lightweight nature of Magnesium AZ91D-F makes it well-suited for automotive components. It is used in engine parts, transmission cases, steering columns, and other structural components to reduce weight and improve fuel efficiency.
- Aerospace Industry: Magnesium AZ91D-F is used in aerospace applications that require lightweight materials. It can be found in aircraft components such as brackets, housings, and interior fittings.
- Electronics: Magnesium AZ91D-F's good electromagnetic shielding and thermal conductivity make it suitable for electronic devices. It can be used in laptops, tablets, smartphones, and other electronic housings.
- Sports Equipment: Due to its lightweight and high strength-to-weight ratio, Magnesium AZ91D-F is used in the manufacturing of sporting goods such as golf club heads, bicycle frames, and tennis racquets.
- Medical Devices: Magnesium AZ91D-F is utilized in the medical field for producing lightweight orthopedic implants, surgical tools, and equipment housings.
- Industrial Applications: The alloy's excellent castability allows for the production of intricate shapes and thin-walled components. Magnesium AZ91D-F is used in various industrial applications like die castings, power tools, and machinery parts.
- Consumer Goods: The lightweight and aesthetic appeal of Magnesium AZ91D-F make it suitable for consumer products such as camera bodies, portable speakers, and appliances.