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EN-MC95310 Magnesium vs. ASTM A302 Alloy Steel

EN-MC95310 magnesium belongs to the magnesium alloys classification, while ASTM A302 alloy steel belongs to the iron alloys. 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 EN-MC95310 magnesium and the bottom bar is ASTM A302 alloy steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 85
180 to 190
Elastic (Young's, Tensile) Modulus, GPa 45
190
Elongation at Break, % 2.2
20 to 23
Fatigue Strength, MPa 110
250 to 280
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 17
73
Shear Strength, MPa 160
370 to 390
Tensile Strength: Ultimate (UTS), MPa 280
590 to 620
Tensile Strength: Yield (Proof), MPa 190
350 to 390

Thermal Properties

Latent Heat of Fusion, J/g 330
250
Maximum Temperature: Mechanical, °C 170
410
Melting Completion (Liquidus), °C 650
1460
Melting Onset (Solidus), °C 540
1420
Specific Heat Capacity, J/kg-K 960
470
Thermal Conductivity, W/m-K 51
39 to 51
Thermal Expansion, µm/m-K 25
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
7.2 to 7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 50
8.2 to 8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 34
2.4 to 3.0
Density, g/cm3 1.9
7.8 to 7.9
Embodied Carbon, kg CO2/kg material 29
1.5 to 1.6
Embodied Energy, MJ/kg 260
20 to 21
Embodied Water, L/kg 900
48 to 50

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.6
110 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 420
330 to 410
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 61
24
Strength to Weight: Axial, points 40
21 to 22
Strength to Weight: Bending, points 49
20 to 21
Thermal Diffusivity, mm2/s 28
10 to 14
Thermal Shock Resistance, points 18
17 to 18