Magnesium AZ91D-F (UNS M11916)
AZ91D-F is a premium magnesium alloy widely utilized in die casting due to its excellent balance of mechanical strength, corrosion resistance, and castability. Its high purity enhances durability and performance, making it ideal for demanding applications across various industries.
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| 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 | —— | 0.1% |
| 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 button 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
AZ91D-F serves diverse industries, offering lightweight strength and excellent castability for components in fields including:
- Automotive Industry: Its lightweight nature suits engine parts, transmission cases, steering columns, and structural components, enhancing fuel efficiency.
- Aerospace Industry: Used in aircraft brackets, housings, and interior fittings where weight reduction is critical.
- Electronics: Its electromagnetic shielding and thermal conductivity make it ideal for laptops, tablets, smartphones, and electronic housings.
- Sports Equipment: Applied in manufacturing golf club heads, bicycle frames, and tennis racquets due to its high strength-to-weight ratio.
- Medical Devices: Utilized for lightweight orthopedic implants, surgical tools, and equipment housings.
- Industrial Applications: Its excellent castability enables intricate shapes and thin-walled components for die castings, power tools, and machinery parts.
- Consumer Goods: Chosen for camera bodies, portable speakers, and appliances due to its light weight and aesthetic appeal.