Magnesium ZC71-T5 (UNS M16710)

Image of Magnesium ZC71-T5 bars
Credit: CSIRO, CC BY 3.0, via Wikimedia Commons

Magnesium ZC71-T5 is a high-performance magnesium alloy recognized for its outstanding strength-to-weight ratio, corrosion resistance, and machinability. These characteristics make it a preferred material in weight-sensitive applications across aerospace, automotive, and other high-tech industries.

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Chemical Composition
ElementMinMax
Magnesium90.0%92.5%
Copper1.0%1.5%
Manganese0.5%1.0%
Nickel——0.01%
Silicon——0.2%
Zinc6.0%7.0%
Residuals——0.3%

The following table provides a list of magnesium ZC71-T5 properties in both SI and US customary/Imperial units.

Click on the button to switch between Metric and Imperial units.

Table of Magnesium ZC71-T5 Properties
Physical Properties
Metric
Density1830 kg/m3
Mechanical PropertiesMetric
Tensile Strength (Ultimate)300 MPa
Tensile Strength (Yield)240 MPa
Young’s Modulus (E)44.2 GPa
Shear Modulus (G)17 GPa
Elongation at Break in 50 mm8%
Poisson’s Ratio (ν)0.30
Thermal PropertiesMetric
Melting Point455 - 635 °C
Solidus455 °C
Liquidus635 °C
Thermal Conductivity122 W/m·K
Specific Heat Capacity (Cp) Typical value for Mg alloys1.00 J/g·°C
Electrical PropertiesMetric
Electrical Resistivity5.40×10-6 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 ZC71-T5

AdvantagesDisadvantages
LightweightCorrosion prone
High strengthPoor thermal conductivity
Good machinabilityLow melting point
VersatileHigh cost

Applications of Magnesium ZC71-T5

Due to its unique combination of light weight, strength, and corrosion resistance, ZC71-T5 is ideal for a wide range of structural and functional uses, including:

  • Aircraft and spacecraft structures: A lightweight material strong enough for use in wings, fuselages, and landing gear.
  • Automotive components: Commonly used in the construction of pistons, connecting rods, and gears.
  • Marine equipment: Corrosion-resistant and suitable for boat hulls, propellers, and other marine parts.
  • Sporting goods: Used in golf clubs, bicycle frames, and various types of sporting equipment.
  • Medical devices: Biocompatible and applied in implants, surgical instruments, and other medical tools.
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