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7076 Aluminum vs. EN 1.0070 Steel

7076 aluminum belongs to the aluminum alloys classification, while EN 1.0070 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 7076 aluminum and the bottom bar is EN 1.0070 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160
210
Elastic (Young's, Tensile) Modulus, GPa 70
190
Elongation at Break, % 6.2
9.1
Fatigue Strength, MPa 170
210
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 27
73
Shear Strength, MPa 310
440
Tensile Strength: Ultimate (UTS), MPa 530
740
Tensile Strength: Yield (Proof), MPa 460
350

Thermal Properties

Latent Heat of Fusion, J/g 380
250
Maximum Temperature: Mechanical, °C 170
400
Melting Completion (Liquidus), °C 630
1470
Melting Onset (Solidus), °C 460
1430
Specific Heat Capacity, J/kg-K 860
470
Thermal Conductivity, W/m-K 140
53
Thermal Expansion, µm/m-K 24
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 35
6.8
Electrical Conductivity: Equal Weight (Specific), % IACS 100
7.8

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
1.7
Density, g/cm3 3.0
7.9
Embodied Carbon, kg CO2/kg material 8.0
1.4
Embodied Energy, MJ/kg 150
18
Embodied Water, L/kg 1110
45

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 31
56
Resilience: Unit (Modulus of Resilience), kJ/m3 1510
320
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 45
24
Strength to Weight: Axial, points 49
26
Strength to Weight: Bending, points 48
23
Thermal Diffusivity, mm2/s 54
14
Thermal Shock Resistance, points 23
23

Alloy Composition

Aluminum (Al), % 86.9 to 91.2
0
Copper (Cu), % 0.3 to 1.0
0
Iron (Fe), % 0 to 0.6
99.876 to 100
Magnesium (Mg), % 1.2 to 2.0
0
Manganese (Mn), % 0.3 to 0.8
0
Nitrogen (N), % 0
0 to 0.014
Phosphorus (P), % 0
0 to 0.055
Silicon (Si), % 0 to 0.4
0
Sulfur (S), % 0
0 to 0.055
Titanium (Ti), % 0 to 0.2
0
Zinc (Zn), % 7.0 to 8.0
0
Residuals, % 0 to 0.15
0