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7178 Aluminum vs. AISI 410 Stainless Steel

7178 aluminum belongs to the aluminum alloys classification, while AISI 410 stainless steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (5, 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 410 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
190
Elongation at Break, % 4.5 to 12
16 to 22
Fatigue Strength, MPa 120 to 210
190 to 350
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 27
76
Shear Strength, MPa 140 to 380
330 to 470
Tensile Strength: Ultimate (UTS), MPa 240 to 640
520 to 770
Tensile Strength: Yield (Proof), MPa 120 to 560
290 to 580

Thermal Properties

Latent Heat of Fusion, J/g 370
270
Maximum Temperature: Mechanical, °C 180
710
Melting Completion (Liquidus), °C 630
1530
Melting Onset (Solidus), °C 480
1480
Specific Heat Capacity, J/kg-K 860
480
Thermal Conductivity, W/m-K 130
30
Thermal Expansion, µm/m-K 23
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 31
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 91
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 10
7.0
Density, g/cm3 3.1
7.7
Embodied Carbon, kg CO2/kg material 8.2
1.9
Embodied Energy, MJ/kg 150
27
Embodied Water, L/kg 1110
100

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 24 to 52
97 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 110 to 2220
210 to 860
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 45
25
Strength to Weight: Axial, points 21 to 58
19 to 28
Strength to Weight: Bending, points 28 to 54
19 to 24
Thermal Diffusivity, mm2/s 47
8.1
Thermal Shock Resistance, points 10 to 28
18 to 26

Alloy Composition

Aluminum (Al), % 85.4 to 89.5
0
Carbon (C), % 0
0.080 to 0.15
Chromium (Cr), % 0.18 to 0.28
11.5 to 13.5
Copper (Cu), % 1.6 to 2.4
0
Iron (Fe), % 0 to 0.5
83.5 to 88.4
Magnesium (Mg), % 2.4 to 3.1
0
Manganese (Mn), % 0 to 0.3
0 to 1.0
Nickel (Ni), % 0
0 to 0.75
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.4
0 to 1.0
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

Comparable Variants