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ASTM A242 HSLA Steel vs. C443.0 Aluminum

ASTM A242 HSLA steel belongs to the iron alloys classification, while C443.0 aluminum belongs to the aluminum alloys. 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 A242 HSLA steel and the bottom bar is C443.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
65
Elastic (Young's, Tensile) Modulus, GPa 190
71
Elongation at Break, % 22
9.0
Fatigue Strength, MPa 230
120
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 73
27
Shear Strength, MPa 310
130
Tensile Strength: Ultimate (UTS), MPa 490
230
Tensile Strength: Yield (Proof), MPa 330
100

Thermal Properties

Latent Heat of Fusion, J/g 250
470
Maximum Temperature: Mechanical, °C 400
170
Melting Completion (Liquidus), °C 1460
630
Melting Onset (Solidus), °C 1420
600
Specific Heat Capacity, J/kg-K 470
900
Thermal Conductivity, W/m-K 52
140
Thermal Expansion, µm/m-K 13
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.1
37
Electrical Conductivity: Equal Weight (Specific), % IACS 8.1
120

Otherwise Unclassified Properties

Base Metal Price, % relative 1.9
9.5
Density, g/cm3 7.9
2.7
Embodied Carbon, kg CO2/kg material 1.4
7.9
Embodied Energy, MJ/kg 18
150
Embodied Water, L/kg 46
1120

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 95
17
Resilience: Unit (Modulus of Resilience), kJ/m3 290
70
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 24
51
Strength to Weight: Axial, points 17
24
Strength to Weight: Bending, points 17
31
Thermal Diffusivity, mm2/s 14
58
Thermal Shock Resistance, points 14
10

Alloy Composition

Aluminum (Al), % 0
89.6 to 95.5
Carbon (C), % 0 to 0.15
0
Copper (Cu), % 0.2 to 0.45
0 to 0.6
Iron (Fe), % 98.2 to 99.8
0 to 2.0
Magnesium (Mg), % 0
0 to 0.1
Manganese (Mn), % 0 to 1.0
0 to 0.35
Nickel (Ni), % 0
0 to 0.5
Phosphorus (P), % 0 to 0.15
0
Silicon (Si), % 0
4.5 to 6.0
Sulfur (S), % 0 to 0.050
0
Tin (Sn), % 0
0 to 0.15
Zinc (Zn), % 0
0 to 0.5
Residuals, % 0
0 to 0.25