MakeItFrom.com
Menu (ESC)

7049 Aluminum vs. Grey Cast Iron

7049 aluminum belongs to the aluminum alloys classification, while grey cast iron belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (2, 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 7049 aluminum and the bottom bar is grey cast iron.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
160 to 300
Elastic (Young's, Tensile) Modulus, GPa 70
180
Elongation at Break, % 6.2 to 7.0
9.6
Fatigue Strength, MPa 160 to 170
69 to 170
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 27
69
Shear Strength, MPa 300 to 310
180 to 610
Tensile Strength: Ultimate (UTS), MPa 510 to 530
160 to 450
Tensile Strength: Yield (Proof), MPa 420 to 450
98 to 290

Thermal Properties

Latent Heat of Fusion, J/g 370
280
Melting Completion (Liquidus), °C 640
1380
Melting Onset (Solidus), °C 480
1180
Specific Heat Capacity, J/kg-K 860
490
Thermal Conductivity, W/m-K 130
46
Thermal Expansion, µm/m-K 23
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 36
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 110
8.9

Otherwise Unclassified Properties

Base Metal Price, % relative 10
1.9
Density, g/cm3 3.1
7.5
Embodied Carbon, kg CO2/kg material 8.1
1.5
Embodied Energy, MJ/kg 140
21
Embodied Water, L/kg 1110
44

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 31 to 34
13 to 37
Resilience: Unit (Modulus of Resilience), kJ/m3 1270 to 1440
27 to 240
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 45
25
Strength to Weight: Axial, points 46 to 47
5.8 to 17
Strength to Weight: Bending, points 46 to 47
8.7 to 17
Thermal Diffusivity, mm2/s 51
13
Thermal Shock Resistance, points 22 to 23
6.0 to 17

Alloy Composition

Aluminum (Al), % 85.7 to 89.5
0
Carbon (C), % 0
3.1 to 3.4
Chromium (Cr), % 0.1 to 0.22
0
Copper (Cu), % 1.2 to 1.9
0
Iron (Fe), % 0 to 0.35
92.1 to 93.9
Magnesium (Mg), % 2.0 to 2.9
0
Manganese (Mn), % 0 to 0.2
0.5 to 0.7
Phosphorus (P), % 0
0 to 0.9
Silicon (Si), % 0 to 0.25
2.5 to 2.8
Sulfur (S), % 0
0 to 0.15
Titanium (Ti), % 0 to 0.1
0
Zinc (Zn), % 7.2 to 8.2
0
Residuals, % 0 to 0.15
0