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QE22A Magnesium vs. ASTM A356 Grade 1

QE22A magnesium belongs to the magnesium alloys classification, while ASTM A356 grade 1 belongs to the iron alloys. There are 27 material properties with values for both materials. Properties with values for just one material (8, 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 QE22A magnesium and the bottom bar is ASTM A356 grade 1.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 44
190
Elongation at Break, % 2.4
23
Fatigue Strength, MPa 110
200
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 17
73
Tensile Strength: Ultimate (UTS), MPa 250
550
Tensile Strength: Yield (Proof), MPa 190
280

Thermal Properties

Latent Heat of Fusion, J/g 340
250
Maximum Temperature: Mechanical, °C 250
400
Melting Completion (Liquidus), °C 640
1460
Melting Onset (Solidus), °C 570
1420
Specific Heat Capacity, J/kg-K 970
470
Thermal Conductivity, W/m-K 110
51
Thermal Expansion, µm/m-K 27
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
7.0
Electrical Conductivity: Equal Weight (Specific), % IACS 120
8.1

Otherwise Unclassified Properties

Density, g/cm3 2.0
7.8
Embodied Carbon, kg CO2/kg material 27
1.4
Embodied Energy, MJ/kg 220
18

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.5
110
Resilience: Unit (Modulus of Resilience), kJ/m3 400
210
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 60
24
Strength to Weight: Axial, points 36
20
Strength to Weight: Bending, points 46
19
Thermal Diffusivity, mm2/s 59
14
Thermal Shock Resistance, points 15
18

Alloy Composition

Carbon (C), % 0
0 to 0.35
Copper (Cu), % 0 to 0.1
0
Iron (Fe), % 0
98.3 to 100
Magnesium (Mg), % 93.1 to 95.8
0
Manganese (Mn), % 0
0 to 0.7
Nickel (Ni), % 0 to 0.010
0
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 0
0 to 0.6
Silver (Ag), % 2.0 to 3.0
0
Sulfur (S), % 0
0 to 0.030
Unspecified Rare Earths, % 1.8 to 2.5
0
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0 to 0.3
0