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ASTM A182 Grade F12 Class 2 vs. 7108 Aluminum

ASTM A182 grade F12 class 2 belongs to the iron alloys classification, while 7108 aluminum belongs to the aluminum 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 ASTM A182 grade F12 class 2 and the bottom bar is 7108 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
69
Elongation at Break, % 22
11
Fatigue Strength, MPa 220
120
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 73
26
Shear Strength, MPa 340
210
Tensile Strength: Ultimate (UTS), MPa 540
350
Tensile Strength: Yield (Proof), MPa 310
290

Thermal Properties

Latent Heat of Fusion, J/g 250
380
Maximum Temperature: Mechanical, °C 430
210
Melting Completion (Liquidus), °C 1460
630
Melting Onset (Solidus), °C 1420
530
Specific Heat Capacity, J/kg-K 470
880
Thermal Conductivity, W/m-K 43
150
Thermal Expansion, µm/m-K 13
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
39
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4
120

Otherwise Unclassified Properties

Base Metal Price, % relative 2.8
9.5
Density, g/cm3 7.8
2.9
Embodied Carbon, kg CO2/kg material 1.6
8.3
Embodied Energy, MJ/kg 21
150
Embodied Water, L/kg 52
1150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 100
38
Resilience: Unit (Modulus of Resilience), kJ/m3 260
620
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
47
Strength to Weight: Axial, points 19
34
Strength to Weight: Bending, points 19
38
Thermal Diffusivity, mm2/s 12
59
Thermal Shock Resistance, points 16
16

Alloy Composition


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Aluminum (Al), % 0
92.4 to 94.7
Carbon (C), % 0.1 to 0.2
0
Chromium (Cr), % 0.8 to 1.3
0
Copper (Cu), % 0
0 to 0.050
Iron (Fe), % 96.4 to 98.3
0 to 0.1
Magnesium (Mg), % 0
0.7 to 1.4
Manganese (Mn), % 0.3 to 0.8
0 to 0.050
Molybdenum (Mo), % 0.44 to 0.65
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0.1 to 0.6
0 to 0.1
Sulfur (S), % 0 to 0.040
0
Titanium (Ti), % 0
0 to 0.050
Zinc (Zn), % 0
4.5 to 5.5
Zirconium (Zr), % 0
0.12 to 0.25
Residuals, % 0
0 to 0.15