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2095 Aluminum vs. ASTM Grade HI Steel

2095 aluminum belongs to the aluminum alloys classification, while ASTM grade HI steel belongs to the iron alloys. There are 29 material properties with values for both materials. Properties with values for just one material (5, 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 2095 aluminum and the bottom bar is ASTM grade HI steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
200
Elongation at Break, % 8.5
11
Fatigue Strength, MPa 200
150
Poisson's Ratio 0.33
0.27
Shear Modulus, GPa 26
79
Tensile Strength: Ultimate (UTS), MPa 700
550
Tensile Strength: Yield (Proof), MPa 610
270

Thermal Properties

Latent Heat of Fusion, J/g 390
310
Maximum Temperature: Mechanical, °C 210
1100
Melting Completion (Liquidus), °C 660
1400
Melting Onset (Solidus), °C 540
1350
Specific Heat Capacity, J/kg-K 910
490
Thermal Conductivity, W/m-K 130
15
Thermal Expansion, µm/m-K 23
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 35
2.1
Electrical Conductivity: Equal Weight (Specific), % IACS 110
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 31
23
Density, g/cm3 3.0
7.8
Embodied Carbon, kg CO2/kg material 8.6
4.1
Embodied Energy, MJ/kg 160
59
Embodied Water, L/kg 1470
200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 57
52
Resilience: Unit (Modulus of Resilience), kJ/m3 2640
180
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 46
25
Strength to Weight: Axial, points 65
20
Strength to Weight: Bending, points 59
19
Thermal Diffusivity, mm2/s 49
3.9
Thermal Shock Resistance, points 31
12

Alloy Composition

Aluminum (Al), % 91.3 to 94.9
0
Carbon (C), % 0
0.2 to 0.5
Chromium (Cr), % 0
26 to 30
Copper (Cu), % 3.9 to 4.6
0
Iron (Fe), % 0 to 0.15
46.9 to 59.8
Lithium (Li), % 0.7 to 1.5
0
Magnesium (Mg), % 0.25 to 0.8
0
Manganese (Mn), % 0 to 0.25
0 to 2.0
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 0
14 to 18
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.12
0 to 2.0
Silver (Ag), % 0.25 to 0.6
0
Sulfur (S), % 0
0 to 0.040
Titanium (Ti), % 0 to 0.1
0
Zinc (Zn), % 0 to 0.25
0
Zirconium (Zr), % 0.040 to 0.18
0
Residuals, % 0 to 0.15
0