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705.0 Aluminum vs. ASTM A514 Steel

705.0 aluminum belongs to the aluminum alloys classification, while ASTM A514 steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (2, 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 705.0 aluminum and the bottom bar is ASTM A514 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 62 to 65
240 to 250
Elastic (Young's, Tensile) Modulus, GPa 69
190
Elongation at Break, % 8.4 to 10
18 to 21
Fatigue Strength, MPa 63 to 98
470 to 540
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
73
Tensile Strength: Ultimate (UTS), MPa 240 to 260
790 to 830
Tensile Strength: Yield (Proof), MPa 130
690 to 770

Thermal Properties

Latent Heat of Fusion, J/g 390
250 to 260
Maximum Temperature: Mechanical, °C 180
400 to 440
Melting Completion (Liquidus), °C 640
1460
Melting Onset (Solidus), °C 610
1420
Specific Heat Capacity, J/kg-K 890
470
Thermal Conductivity, W/m-K 140
37 to 51
Thermal Expansion, µm/m-K 24
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 34
7.2 to 7.6
Electrical Conductivity: Equal Weight (Specific), % IACS 110
8.3 to 8.8

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
2.3 to 3.8
Density, g/cm3 2.8
7.8 to 7.9
Embodied Carbon, kg CO2/kg material 8.4
1.6 to 1.8
Embodied Energy, MJ/kg 150
21 to 25
Embodied Water, L/kg 1170
48 to 57

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 18 to 20
140 to 170
Resilience: Unit (Modulus of Resilience), kJ/m3 120 to 130
1280 to 1590
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 49
24
Strength to Weight: Axial, points 24 to 26
28 to 29
Strength to Weight: Bending, points 31 to 32
24 to 25
Thermal Diffusivity, mm2/s 55
10 to 14
Thermal Shock Resistance, points 11
23 to 24