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EN-MC21320 Magnesium vs. ASTM A369 Grade FP12

EN-MC21320 magnesium belongs to the magnesium alloys classification, while ASTM A369 grade FP12 belongs to the iron alloys. There are 31 material properties with values for both materials. Properties with values for just one material (1, 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 EN-MC21320 magnesium and the bottom bar is ASTM A369 grade FP12.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 68
140
Elastic (Young's, Tensile) Modulus, GPa 45
190
Elongation at Break, % 7.5
20
Fatigue Strength, MPa 95
170
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 18
73
Shear Strength, MPa 130
300
Tensile Strength: Ultimate (UTS), MPa 230
470
Tensile Strength: Yield (Proof), MPa 140
250

Thermal Properties

Latent Heat of Fusion, J/g 370
250
Maximum Temperature: Mechanical, °C 110
430
Melting Completion (Liquidus), °C 600
1470
Melting Onset (Solidus), °C 530
1430
Specific Heat Capacity, J/kg-K 1000
470
Thermal Conductivity, W/m-K 66
45
Thermal Expansion, µm/m-K 26
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 17
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 91
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 12
2.8
Density, g/cm3 1.6
7.9
Embodied Carbon, kg CO2/kg material 23
1.6
Embodied Energy, MJ/kg 160
21
Embodied Water, L/kg 980
52

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 15
81
Resilience: Unit (Modulus of Resilience), kJ/m3 200
160
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 72
24
Strength to Weight: Axial, points 38
17
Strength to Weight: Bending, points 50
17
Thermal Diffusivity, mm2/s 40
12
Thermal Shock Resistance, points 13
14

Alloy Composition


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Aluminum (Al), % 3.5 to 5.0
0
Carbon (C), % 0
0.050 to 0.15
Chromium (Cr), % 0
0.8 to 1.3
Copper (Cu), % 0 to 0.010
0
Iron (Fe), % 0 to 0.0050
96.8 to 98.4
Magnesium (Mg), % 92.5 to 95.9
0
Manganese (Mn), % 0.1 to 0.7
0.3 to 0.61
Molybdenum (Mo), % 0
0.44 to 0.65
Nickel (Ni), % 0 to 0.0020
0
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0.5 to 1.5
0 to 0.5
Sulfur (S), % 0
0 to 0.025
Zinc (Zn), % 0 to 0.2
0
Residuals, % 0 to 0.010
0