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ACI-ASTM CH20 Steel vs. 358.0 Aluminum

ACI-ASTM CH20 steel belongs to the iron alloys classification, while 358.0 aluminum belongs to the aluminum alloys. There are 29 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 ACI-ASTM CH20 steel and the bottom bar is 358.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
71
Elongation at Break, % 38
3.5 to 6.0
Fatigue Strength, MPa 290
100 to 110
Poisson's Ratio 0.27
0.33
Shear Modulus, GPa 78
27
Tensile Strength: Ultimate (UTS), MPa 610
350 to 370
Tensile Strength: Yield (Proof), MPa 350
290 to 320

Thermal Properties

Latent Heat of Fusion, J/g 310
520
Maximum Temperature: Mechanical, °C 1100
170
Melting Completion (Liquidus), °C 1410
600
Melting Onset (Solidus), °C 1430
560
Specific Heat Capacity, J/kg-K 480
900
Thermal Conductivity, W/m-K 14
150
Thermal Expansion, µm/m-K 15
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
36
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
130

Otherwise Unclassified Properties

Base Metal Price, % relative 20
19
Density, g/cm3 7.8
2.6
Embodied Carbon, kg CO2/kg material 3.7
8.7
Embodied Energy, MJ/kg 53
160
Embodied Water, L/kg 180
1090

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 200
12 to 20
Resilience: Unit (Modulus of Resilience), kJ/m3 300
590 to 710
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
53
Strength to Weight: Axial, points 22
37 to 39
Strength to Weight: Bending, points 21
42 to 44
Thermal Diffusivity, mm2/s 3.7
63
Thermal Shock Resistance, points 15
16 to 17

Alloy Composition

Aluminum (Al), % 0
89.1 to 91.8
Beryllium (Be), % 0
0.1 to 0.3
Carbon (C), % 0 to 0.2
0
Chromium (Cr), % 22 to 26
0 to 0.2
Copper (Cu), % 0
0 to 0.2
Iron (Fe), % 54.7 to 66
0 to 0.3
Magnesium (Mg), % 0
0.4 to 0.6
Manganese (Mn), % 0 to 1.5
0 to 0.2
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 12 to 15
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 2.0
7.6 to 8.6
Sulfur (S), % 0 to 0.040
0
Titanium (Ti), % 0
0.1 to 0.2
Zinc (Zn), % 0
0 to 0.2
Residuals, % 0
0 to 0.15