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AZ91A Magnesium vs. ASTM A182 Grade F3V

AZ91A magnesium belongs to the magnesium alloys classification, while ASTM A182 grade F3V belongs to the iron alloys. There are 31 material properties with values for both materials. Properties with values for just one material (4, 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 AZ91A magnesium and the bottom bar is ASTM A182 grade F3V.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 63
210
Elastic (Young's, Tensile) Modulus, GPa 46
190
Elongation at Break, % 5.0
20
Fatigue Strength, MPa 99
330
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 18
74
Shear Strength, MPa 140
410
Tensile Strength: Ultimate (UTS), MPa 240
660
Tensile Strength: Yield (Proof), MPa 160
470

Thermal Properties

Latent Heat of Fusion, J/g 360
250
Maximum Temperature: Mechanical, °C 130
470
Melting Completion (Liquidus), °C 600
1470
Melting Onset (Solidus), °C 470
1430
Specific Heat Capacity, J/kg-K 990
470
Thermal Conductivity, W/m-K 73
39
Thermal Expansion, µm/m-K 26
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 10
7.6
Electrical Conductivity: Equal Weight (Specific), % IACS 52
8.8

Otherwise Unclassified Properties

Base Metal Price, % relative 12
4.2
Density, g/cm3 1.7
7.9
Embodied Carbon, kg CO2/kg material 22
2.3
Embodied Energy, MJ/kg 160
33
Embodied Water, L/kg 990
63

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 11
120
Resilience: Unit (Modulus of Resilience), kJ/m3 280
590
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 69
24
Strength to Weight: Axial, points 38
23
Strength to Weight: Bending, points 49
21
Thermal Diffusivity, mm2/s 42
10
Thermal Shock Resistance, points 14
19

Alloy Composition

Aluminum (Al), % 8.3 to 9.7
0
Boron (B), % 0
0.0010 to 0.0030
Carbon (C), % 0
0.050 to 0.18
Chromium (Cr), % 0
2.8 to 3.2
Copper (Cu), % 0 to 0.1
0
Iron (Fe), % 0
94.4 to 95.7
Magnesium (Mg), % 88.2 to 91.2
0
Manganese (Mn), % 0.13 to 0.5
0.3 to 0.6
Molybdenum (Mo), % 0
0.9 to 1.1
Nickel (Ni), % 0 to 0.030
0
Phosphorus (P), % 0
0 to 0.020
Silicon (Si), % 0 to 0.5
0 to 0.1
Sulfur (S), % 0
0 to 0.020
Titanium (Ti), % 0
0.015 to 0.035
Vanadium (V), % 0
0.2 to 0.3
Zinc (Zn), % 0.35 to 1.0
0