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2095 Aluminum vs. ASTM A27 Cast Steel

2095 aluminum belongs to the aluminum alloys classification, while ASTM A27 cast steel belongs to the iron alloys. There are 29 material properties with values for both materials. Properties with values for just one material (3, 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 2095 aluminum and the bottom bar is ASTM A27 cast steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
190
Elongation at Break, % 8.5
25 to 27
Fatigue Strength, MPa 200
170 to 230
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
73
Tensile Strength: Ultimate (UTS), MPa 700
460 to 550
Tensile Strength: Yield (Proof), MPa 610
230 to 310

Thermal Properties

Latent Heat of Fusion, J/g 390
250
Maximum Temperature: Mechanical, °C 210
400
Melting Completion (Liquidus), °C 660
1460
Melting Onset (Solidus), °C 540
1420
Specific Heat Capacity, J/kg-K 910
470
Thermal Conductivity, W/m-K 130
52
Thermal Expansion, µm/m-K 23
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 35
7.0 to 7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 110
8.1

Otherwise Unclassified Properties

Base Metal Price, % relative 31
1.8
Density, g/cm3 3.0
7.8
Embodied Carbon, kg CO2/kg material 8.6
1.4
Embodied Energy, MJ/kg 160
18
Embodied Water, L/kg 1470
45 to 46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 57
96 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 2640
140 to 260
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 46
24
Strength to Weight: Axial, points 65
16 to 20
Strength to Weight: Bending, points 59
17 to 19
Thermal Diffusivity, mm2/s 49
14
Thermal Shock Resistance, points 31
15 to 18