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EQ21A Magnesium vs. R60802 Alloy

EQ21A magnesium belongs to the magnesium alloys classification, while R60802 alloy belongs to the otherwise unclassified metals. There are 19 material properties with values for both materials. Properties with values for just one material (15, 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 EQ21A magnesium and the bottom bar is R60802 alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 44
98
Elongation at Break, % 2.4
22
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 17
36
Tensile Strength: Ultimate (UTS), MPa 250
430
Tensile Strength: Yield (Proof), MPa 190
270

Thermal Properties

Latent Heat of Fusion, J/g 340
250
Specific Heat Capacity, J/kg-K 980
270
Thermal Conductivity, W/m-K 110
22
Thermal Expansion, µm/m-K 27
6.0

Otherwise Unclassified Properties

Density, g/cm3 1.9
6.5

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.6
85
Resilience: Unit (Modulus of Resilience), kJ/m3 410
380
Stiffness to Weight: Axial, points 13
8.3
Stiffness to Weight: Bending, points 63
23
Strength to Weight: Axial, points 37
18
Strength to Weight: Bending, points 47
19
Thermal Diffusivity, mm2/s 62
12
Thermal Shock Resistance, points 15
53

Alloy Composition

Chromium (Cr), % 0
0.050 to 0.15
Copper (Cu), % 0.050 to 0.1
0
Iron (Fe), % 0
0.070 to 0.2
Magnesium (Mg), % 93.9 to 96.8
0
Nickel (Ni), % 0 to 0.010
0.030 to 0.080
Silver (Ag), % 1.3 to 1.7
0
Tin (Sn), % 0
1.2 to 1.7
Unspecified Rare Earths, % 1.5 to 3.0
0
Zirconium (Zr), % 0.4 to 1.0
97.8 to 98.7
Residuals, % 0 to 0.3
0 to 0.11