MakeItFrom.com
Menu (ESC)

AZ91E Magnesium vs. ASTM A572 Steel

AZ91E magnesium belongs to the magnesium alloys classification, while ASTM A572 steel 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 AZ91E magnesium and the bottom bar is ASTM A572 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 75
140 to 190
Elastic (Young's, Tensile) Modulus, GPa 46
190
Elongation at Break, % 2.5 to 6.2
18 to 25
Fatigue Strength, MPa 81 to 85
240 to 340
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 18
73
Shear Strength, MPa 89 to 150
300 to 380
Tensile Strength: Ultimate (UTS), MPa 160 to 260
470 to 620
Tensile Strength: Yield (Proof), MPa 96 to 130
330 to 510

Thermal Properties

Latent Heat of Fusion, J/g 350
250
Maximum Temperature: Mechanical, °C 130
400
Melting Completion (Liquidus), °C 600
1460
Melting Onset (Solidus), °C 500
1420
Specific Heat Capacity, J/kg-K 990
470
Thermal Conductivity, W/m-K 84
51
Thermal Expansion, µm/m-K 27
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 10 to 12
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 52 to 60
8.2 to 8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 12
2.0
Density, g/cm3 1.7
7.8
Embodied Carbon, kg CO2/kg material 22
1.6
Embodied Energy, MJ/kg 160
22
Embodied Water, L/kg 990
47

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 3.4 to 12
100 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 100 to 190
290 to 690
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 69
24
Strength to Weight: Axial, points 25 to 42
17 to 22
Strength to Weight: Bending, points 37 to 53
17 to 21
Thermal Diffusivity, mm2/s 49
14
Thermal Shock Resistance, points 9.0 to 15
14 to 18