MakeItFrom.com
Menu (ESC)

AZ31C Magnesium vs. ASTM A225 Steel

AZ31C magnesium belongs to the magnesium alloys classification, while ASTM A225 steel belongs to the iron alloys. There are 30 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 AZ31C magnesium and the bottom bar is ASTM A225 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
190
Elongation at Break, % 12
21 to 23
Fatigue Strength, MPa 150
330 to 390
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 17
73
Shear Strength, MPa 130
390 to 520
Tensile Strength: Ultimate (UTS), MPa 260
620 to 830
Tensile Strength: Yield (Proof), MPa 200
460 to 550

Thermal Properties

Latent Heat of Fusion, J/g 350
250
Maximum Temperature: Mechanical, °C 110
400
Melting Completion (Liquidus), °C 600
1460
Melting Onset (Solidus), °C 550
1420
Specific Heat Capacity, J/kg-K 990
470
Thermal Conductivity, W/m-K 130
52
Thermal Expansion, µm/m-K 26
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 19
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 98
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 12
2.3
Density, g/cm3 1.7
7.8
Embodied Carbon, kg CO2/kg material 23
1.8
Embodied Energy, MJ/kg 160
24 to 25
Embodied Water, L/kg 970
48

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 28
120 to 170
Resilience: Unit (Modulus of Resilience), kJ/m3 440
580 to 820
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 70
24
Strength to Weight: Axial, points 42
22 to 29
Strength to Weight: Bending, points 53
21 to 25
Thermal Diffusivity, mm2/s 74
14
Thermal Shock Resistance, points 16
18 to 24