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SAE-AISI H26 Steel vs. 7049 Aluminum

SAE-AISI H26 steel belongs to the iron alloys classification, while 7049 aluminum belongs to the aluminum alloys. There are 21 material properties with values for both materials. Properties with values for just one material (11, 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 SAE-AISI H26 steel and the bottom bar is 7049 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
70
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 80
27
Tensile Strength: Ultimate (UTS), MPa 720 to 2100
510 to 530

Thermal Properties

Latent Heat of Fusion, J/g 240
370
Melting Completion (Liquidus), °C 1810
640
Melting Onset (Solidus), °C 1760
480
Specific Heat Capacity, J/kg-K 410
860
Thermal Conductivity, W/m-K 22
130
Thermal Expansion, µm/m-K 12
23

Otherwise Unclassified Properties

Base Metal Price, % relative 45
10
Density, g/cm3 9.3
3.1
Embodied Carbon, kg CO2/kg material 8.1
8.1
Embodied Energy, MJ/kg 120
140
Embodied Water, L/kg 90
1110

Common Calculations

Stiffness to Weight: Axial, points 12
13
Stiffness to Weight: Bending, points 21
45
Strength to Weight: Axial, points 22 to 63
46 to 47
Strength to Weight: Bending, points 19 to 39
46 to 47
Thermal Diffusivity, mm2/s 5.6
51
Thermal Shock Resistance, points 22 to 63
22 to 23

Alloy Composition

Aluminum (Al), % 0
85.7 to 89.5
Carbon (C), % 0.45 to 0.55
0
Chromium (Cr), % 3.8 to 4.5
0.1 to 0.22
Copper (Cu), % 0 to 0.25
1.2 to 1.9
Iron (Fe), % 73.3 to 77.5
0 to 0.35
Magnesium (Mg), % 0
2.0 to 2.9
Manganese (Mn), % 0.15 to 0.4
0 to 0.2
Nickel (Ni), % 0 to 0.3
0
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0.15 to 0.4
0 to 0.25
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
0 to 0.1
Tungsten (W), % 17.3 to 19
0
Vanadium (V), % 0.75 to 1.3
0
Zinc (Zn), % 0
7.2 to 8.2
Residuals, % 0
0 to 0.15