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AZ31C Magnesium vs. R60704 Alloy

AZ31C magnesium belongs to the magnesium alloys classification, while R60704 alloy belongs to the otherwise unclassified metals. There are 20 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is AZ31C magnesium and the bottom bar is R60704 alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
97
Elongation at Break, % 12
16
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 17
36
Tensile Strength: Ultimate (UTS), MPa 260
470
Tensile Strength: Yield (Proof), MPa 200
270

Thermal Properties

Latent Heat of Fusion, J/g 350
240
Specific Heat Capacity, J/kg-K 990
270
Thermal Conductivity, W/m-K 130
22
Thermal Expansion, µm/m-K 26
6.0

Otherwise Unclassified Properties

Density, g/cm3 1.7
6.7
Embodied Water, L/kg 970
460

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 28
64
Resilience: Unit (Modulus of Resilience), kJ/m3 440
370
Stiffness to Weight: Axial, points 15
8.1
Stiffness to Weight: Bending, points 70
23
Strength to Weight: Axial, points 42
20
Strength to Weight: Bending, points 53
20
Thermal Diffusivity, mm2/s 74
12
Thermal Shock Resistance, points 16
58

Alloy Composition

Aluminum (Al), % 2.4 to 3.6
0
Carbon (C), % 0
0 to 0.050
Chromium (Cr), % 0
0.2 to 0.4
Copper (Cu), % 0 to 0.1
0
Hafnium (Hf), % 0
0 to 4.5
Hydrogen (H), % 0
0 to 0.0050
Iron (Fe), % 0
0.2 to 0.4
Magnesium (Mg), % 93.4 to 97
0
Manganese (Mn), % 0.15 to 1.0
0
Nickel (Ni), % 0 to 0.030
0
Nitrogen (N), % 0
0 to 0.025
Oxygen (O), % 0
0 to 0.18
Silicon (Si), % 0 to 0.1
0
Tin (Sn), % 0
1.0 to 2.0
Zinc (Zn), % 0.5 to 1.5
0
Zirconium (Zr), % 0
93 to 98.8
Residuals, % 0 to 0.3
0