MakeItFrom.com
Menu (ESC)

7178 Aluminum vs. AISI 310 Stainless Steel

7178 aluminum belongs to the aluminum alloys classification, while AISI 310 stainless steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (4, 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 7178 aluminum and the bottom bar is AISI 310 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
200
Elongation at Break, % 4.5 to 12
34 to 45
Fatigue Strength, MPa 120 to 210
240 to 280
Poisson's Ratio 0.32
0.27
Shear Modulus, GPa 27
78
Shear Strength, MPa 140 to 380
420 to 470
Tensile Strength: Ultimate (UTS), MPa 240 to 640
600 to 710
Tensile Strength: Yield (Proof), MPa 120 to 560
260 to 350

Thermal Properties

Latent Heat of Fusion, J/g 370
310
Maximum Temperature: Mechanical, °C 180
1040
Melting Completion (Liquidus), °C 630
1450
Melting Onset (Solidus), °C 480
1400
Specific Heat Capacity, J/kg-K 860
480
Thermal Conductivity, W/m-K 130
15
Thermal Expansion, µm/m-K 23
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 31
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 91
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 10
25
Density, g/cm3 3.1
7.8
Embodied Carbon, kg CO2/kg material 8.2
4.3
Embodied Energy, MJ/kg 150
61
Embodied Water, L/kg 1110
190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 24 to 52
200 to 220
Resilience: Unit (Modulus of Resilience), kJ/m3 110 to 2220
170 to 310
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 45
25
Strength to Weight: Axial, points 21 to 58
21 to 25
Strength to Weight: Bending, points 28 to 54
20 to 22
Thermal Diffusivity, mm2/s 47
3.9
Thermal Shock Resistance, points 10 to 28
14 to 17

Alloy Composition

Aluminum (Al), % 85.4 to 89.5
0
Carbon (C), % 0
0 to 0.25
Chromium (Cr), % 0.18 to 0.28
24 to 26
Copper (Cu), % 1.6 to 2.4
0
Iron (Fe), % 0 to 0.5
48.2 to 57
Magnesium (Mg), % 2.4 to 3.1
0
Manganese (Mn), % 0 to 0.3
0 to 2.0
Nickel (Ni), % 0
19 to 22
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0 to 0.4
0 to 1.5
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.2
0
Zinc (Zn), % 6.3 to 7.3
0
Residuals, % 0 to 0.15
0