Magnesium AZ91E-T6 (UNS M11919)
AZ91E-T6 is a high-purity magnesium alloy widely used in pressure-tight sand and permanent mold castings. It delivers excellent corrosion resistance along with high tensile strength and moderate yield strength, making it a versatile choice for various engineering applications requiring durability and lightweight performance.
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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-T6 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) | 275 MPa |
| Tensile Strength (Yield) | 145 MPa |
| Compressive Strength (Yield) | 130 MPa |
| Bearing Strength (Ultimate) | 515 MPa |
| Bearing Strength (Yield) | 360 MPa |
| Fatigue Strength # of Cycles 5.0e+8 | 85 MPa |
| Young’s Modulus (E) | 44.8 GPa |
| Shear Modulus (G) | 17 GPa |
| Elongation at Break in 50 mm | 6% |
| Poisson’s Ratio (ν) | 0.35 |
| Brinell Hardness 500 kg load, 10 mm ball | 70 |
| Knoop Hardness Converted from Brinell | 93 |
| Rockwell Hardness | 77 |
| Vickers Hardness Converted from Brinell | 80 |
| 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 |
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-T6
| Advantages | Disadvantages |
|---|---|
| High strength-to-weight ratio | Susceptible to corrosion without proper treatment |
| Lightweight | Can be challenging to machine |
| Good castability | Higher cost compared to some other materials |
| Excellent damping capacity | Limited availability and processing options |
| Good thermal and electrical conductivity | Limited weldability |
| Recyclable and environmentally friendly | Lower modulus of elasticity compared to some metals |
| Good dimensional stability and rigidity | Limited use in high-temperature applications |
Applications of Magnesium AZ91E-T6
Combining strength, lightweight characteristics, and enhanced performance through heat treatment, AZ91E-T6 is utilized across multiple industries, including:
- Automotive Components: Used for engine blocks, transmission cases, intake manifolds, steering columns, and structural parts.
- Aerospace Industry: Utilized in aircraft brackets, housings, and interior components where weight reduction is critical.
- Electronic Devices: Suitable for laptop, tablet, and mobile phone casings, providing durable, lightweight housing with electromagnetic shielding.
- Consumer Goods: Employed in sporting equipment, power tools, and camera bodies to create lightweight, portable products.
- Industrial Machinery: Applied in machine frames, equipment housings, and structural parts requiring high strength and rigidity.
- Medical Equipment: Used in surgical instruments, braces, and lightweight wheelchairs due to its light weight.
- Renewable Energy: Incorporated in wind turbines and solar panel frames for its lightweight nature and corrosion resistance.