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ASTM A217 Cast Steel vs. 4047 Aluminum

ASTM A217 cast steel belongs to the iron alloys classification, while 4047 aluminum belongs to the aluminum alloys. There are 29 material properties with values for both materials. Properties with values for just one material (5, 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 ASTM A217 cast steel and the bottom bar is 4047 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
72
Elongation at Break, % 21 to 27
3.4
Fatigue Strength, MPa 200 to 320
45
Poisson's Ratio 0.28 to 0.29
0.33
Shear Modulus, GPa 73 to 75
27
Tensile Strength: Ultimate (UTS), MPa 540 to 710
120
Tensile Strength: Yield (Proof), MPa 270 to 460
64

Thermal Properties

Latent Heat of Fusion, J/g 250 to 270
570
Maximum Temperature: Mechanical, °C 410 to 600
160
Melting Completion (Liquidus), °C 1450 to 1460
580
Melting Onset (Solidus), °C 1410 to 1420
580
Specific Heat Capacity, J/kg-K 470
900
Thermal Conductivity, W/m-K 26 to 50
130
Thermal Expansion, µm/m-K 13
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3 to 9.2
33
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4 to 11
120

Otherwise Unclassified Properties

Base Metal Price, % relative 2.4 to 7.0
9.5
Density, g/cm3 7.8
2.5
Embodied Carbon, kg CO2/kg material 1.5 to 2.1
7.7
Embodied Energy, MJ/kg 20 to 28
140
Embodied Water, L/kg 47 to 87
1050

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110 to 130
3.5
Resilience: Unit (Modulus of Resilience), kJ/m3 190 to 570
28
Stiffness to Weight: Axial, points 13 to 14
16
Stiffness to Weight: Bending, points 24 to 25
55
Strength to Weight: Axial, points 19 to 25
13
Strength to Weight: Bending, points 19 to 23
21
Thermal Diffusivity, mm2/s 6.9 to 14
59
Thermal Shock Resistance, points 16 to 20
5.6