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N08801 Stainless Steel vs. A357.0 Aluminum

N08801 stainless steel belongs to the iron alloys classification, while A357.0 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 N08801 stainless steel and the bottom bar is A357.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
70
Elongation at Break, % 34
3.7
Fatigue Strength, MPa 260
100
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 77
26
Shear Strength, MPa 570
240
Tensile Strength: Ultimate (UTS), MPa 860
350
Tensile Strength: Yield (Proof), MPa 190
270

Thermal Properties

Latent Heat of Fusion, J/g 300
500
Maximum Temperature: Mechanical, °C 1090
170
Melting Completion (Liquidus), °C 1390
610
Melting Onset (Solidus), °C 1360
560
Specific Heat Capacity, J/kg-K 480
900
Thermal Conductivity, W/m-K 12
160
Thermal Expansion, µm/m-K 16
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.7
40
Electrical Conductivity: Equal Weight (Specific), % IACS 1.9
140

Otherwise Unclassified Properties

Base Metal Price, % relative 30
12
Density, g/cm3 8.0
2.6
Embodied Carbon, kg CO2/kg material 5.5
8.2
Embodied Energy, MJ/kg 79
150
Embodied Water, L/kg 200
1110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 220
12
Resilience: Unit (Modulus of Resilience), kJ/m3 92
520
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 24
53
Strength to Weight: Axial, points 30
38
Strength to Weight: Bending, points 25
43
Thermal Diffusivity, mm2/s 3.3
68
Thermal Shock Resistance, points 20
17

Alloy Composition

Aluminum (Al), % 0
90.8 to 93
Beryllium (Be), % 0
0.040 to 0.070
Carbon (C), % 0 to 0.1
0
Chromium (Cr), % 19 to 22
0
Copper (Cu), % 0 to 0.5
0 to 0.2
Iron (Fe), % 39.5 to 50.3
0 to 0.2
Magnesium (Mg), % 0
0.4 to 0.7
Manganese (Mn), % 0 to 1.5
0 to 0.1
Nickel (Ni), % 30 to 34
0
Silicon (Si), % 0 to 1.0
6.5 to 7.5
Sulfur (S), % 0 to 0.015
0
Titanium (Ti), % 0.75 to 1.5
0.040 to 0.2
Zinc (Zn), % 0
0 to 0.1
Residuals, % 0
0 to 0.15