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357.0 Aluminum vs. ASTM A242 HSLA Steel

357.0 aluminum belongs to the aluminum alloys classification, while ASTM A242 HSLA steel belongs to the iron 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 357.0 aluminum and the bottom bar is ASTM A242 HSLA steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 95
150
Elastic (Young's, Tensile) Modulus, GPa 70
190
Elongation at Break, % 3.4
22
Fatigue Strength, MPa 76
230
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
73
Shear Strength, MPa 200
310
Tensile Strength: Ultimate (UTS), MPa 350
490
Tensile Strength: Yield (Proof), MPa 300
330

Thermal Properties

Latent Heat of Fusion, J/g 500
250
Maximum Temperature: Mechanical, °C 170
400
Melting Completion (Liquidus), °C 620
1460
Melting Onset (Solidus), °C 560
1420
Specific Heat Capacity, J/kg-K 910
470
Thermal Conductivity, W/m-K 150
52
Thermal Expansion, µm/m-K 21
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 39
7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 140
8.1

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
1.9
Density, g/cm3 2.6
7.9
Embodied Carbon, kg CO2/kg material 8.0
1.4
Embodied Energy, MJ/kg 150
18
Embodied Water, L/kg 1110
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 11
95
Resilience: Unit (Modulus of Resilience), kJ/m3 620
290
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 53
24
Strength to Weight: Axial, points 38
17
Strength to Weight: Bending, points 43
17
Thermal Diffusivity, mm2/s 64
14
Thermal Shock Resistance, points 17
14

Alloy Composition

Aluminum (Al), % 91.3 to 93.1
0
Carbon (C), % 0
0 to 0.15
Copper (Cu), % 0 to 0.050
0.2 to 0.45
Iron (Fe), % 0 to 0.15
98.2 to 99.8
Magnesium (Mg), % 0.45 to 0.6
0
Manganese (Mn), % 0 to 0.030
0 to 1.0
Phosphorus (P), % 0
0 to 0.15
Silicon (Si), % 6.5 to 7.5
0
Sulfur (S), % 0
0 to 0.050
Titanium (Ti), % 0 to 0.2
0
Zinc (Zn), % 0 to 0.050
0
Residuals, % 0 to 0.15
0