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ASTM Grade HT Steel vs. 5042 Aluminum

ASTM grade HT steel belongs to the iron alloys classification, while 5042 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 ASTM grade HT steel and the bottom bar is 5042 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
68
Elongation at Break, % 4.6
1.1 to 3.4
Fatigue Strength, MPa 130
97 to 120
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 76
26
Tensile Strength: Ultimate (UTS), MPa 500
340 to 360
Tensile Strength: Yield (Proof), MPa 270
270 to 310

Thermal Properties

Latent Heat of Fusion, J/g 310
400
Maximum Temperature: Mechanical, °C 1010
180
Melting Completion (Liquidus), °C 1390
640
Melting Onset (Solidus), °C 1340
570
Specific Heat Capacity, J/kg-K 480
900
Thermal Conductivity, W/m-K 12
130
Thermal Expansion, µm/m-K 15
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.7
33
Electrical Conductivity: Equal Weight (Specific), % IACS 1.9
110

Otherwise Unclassified Properties

Base Metal Price, % relative 31
9.5
Density, g/cm3 8.0
2.7
Embodied Carbon, kg CO2/kg material 5.4
8.8
Embodied Energy, MJ/kg 76
150
Embodied Water, L/kg 190
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 19
3.6 to 12
Resilience: Unit (Modulus of Resilience), kJ/m3 180
550 to 720
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
50
Strength to Weight: Axial, points 18
35 to 37
Strength to Weight: Bending, points 18
40 to 42
Thermal Diffusivity, mm2/s 3.2
53
Thermal Shock Resistance, points 12
15 to 16

Alloy Composition

Aluminum (Al), % 0
94.2 to 96.8
Carbon (C), % 0.35 to 0.75
0
Chromium (Cr), % 15 to 19
0 to 0.1
Copper (Cu), % 0
0 to 0.15
Iron (Fe), % 38.2 to 51.7
0 to 0.35
Magnesium (Mg), % 0
3.0 to 4.0
Manganese (Mn), % 0 to 2.0
0.2 to 0.5
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 33 to 37
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 2.5
0 to 0.2
Sulfur (S), % 0 to 0.040
0
Titanium (Ti), % 0
0 to 0.1
Zinc (Zn), % 0
0 to 0.25
Residuals, % 0
0 to 0.15