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7129 Aluminum vs. ASTM A182 Grade F122

7129 Aluminum belongs to the aluminum alloys classification, while ASTM A182 grade F122 belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (3, 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 7129 Aluminum and the bottom bar is ASTM A182 grade F122.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
190
Elongation at Break, % 9.0 to 9.1
23
Fatigue Strength, MPa 150 to 190
320
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
76
Shear Strength, MPa 250 to 260
450
Tensile Strength: Ultimate (UTS), MPa 430
710
Tensile Strength: Yield (Proof), MPa 380 to 390
450

Thermal Properties

Latent Heat of Fusion, J/g 380
270
Maximum Temperature: Mechanical, °C 180
600
Melting Completion (Liquidus), °C 630
1490
Melting Onset (Solidus), °C 510
1440
Specific Heat Capacity, J/kg-K 880
470
Thermal Conductivity, W/m-K 150
24
Thermal Expansion, µm/m-K 24
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 40
10
Electrical Conductivity: Equal Weight (Specific), % IACS 120
12

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
12
Density, g/cm3 2.9
8.0
Embodied Carbon, kg CO2/kg material 8.3
3.0
Embodied Energy, MJ/kg 150
44
Embodied Water, L/kg 1150
100

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 37 to 38
140
Resilience: Unit (Modulus of Resilience), kJ/m3 1050 to 1090
520
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 47
24
Strength to Weight: Axial, points 41
25
Strength to Weight: Bending, points 43 to 44
22
Thermal Diffusivity, mm2/s 58
6.4
Thermal Shock Resistance, points 19
19

Alloy Composition

Aluminum (Al), % 91 to 94
0 to 0.020
Boron (B), % 0
0 to 0.0050
Carbon (C), % 0
0.070 to 0.14
Chromium (Cr), % 0 to 0.1
10 to 11.5
Copper (Cu), % 0.5 to 0.9
0.3 to 1.7
Gallium (Ga), % 0 to 0.030
0
Iron (Fe), % 0 to 0.3
81.3 to 87.7
Magnesium (Mg), % 1.3 to 2.0
0
Manganese (Mn), % 0 to 0.1
0 to 0.7
Molybdenum (Mo), % 0
0.25 to 0.6
Nickel (Ni), % 0
0 to 0.5
Niobium (Nb), % 0
0.040 to 0.1
Nitrogen (N), % 0
0.040 to 0.1
Phosphorus (P), % 0
0 to 0.020
Silicon (Si), % 0 to 0.15
0 to 0.5
Sulfur (S), % 0
0 to 0.010
Titanium (Ti), % 0 to 0.050
0 to 0.010
Tungsten (W), % 0
1.5 to 2.5
Vanadium (V), % 0 to 0.050
0.15 to 0.3
Zinc (Zn), % 4.2 to 5.2
0
Zirconium (Zr), % 0
0 to 0.010
Residuals, % 0 to 0.15
0