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1235 Aluminum vs. S35135 Stainless Steel

1235 aluminum belongs to the aluminum alloys classification, while S35135 stainless steel belongs to the iron alloys. There are 26 material properties with values for both materials. Properties with values for just one material (6, 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 1235 aluminum and the bottom bar is S35135 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
200
Elongation at Break, % 28 to 34
34
Fatigue Strength, MPa 23 to 58
180
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
79
Shear Strength, MPa 52 to 56
390
Tensile Strength: Ultimate (UTS), MPa 80 to 84
590
Tensile Strength: Yield (Proof), MPa 23 to 57
230

Thermal Properties

Latent Heat of Fusion, J/g 400
320
Maximum Temperature: Mechanical, °C 170
1100
Melting Completion (Liquidus), °C 640
1430
Melting Onset (Solidus), °C 640
1380
Specific Heat Capacity, J/kg-K 900
470
Thermal Expansion, µm/m-K 23
16

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
37
Density, g/cm3 2.7
8.1
Embodied Carbon, kg CO2/kg material 8.3
6.8
Embodied Energy, MJ/kg 160
94
Embodied Water, L/kg 1190
220

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 17 to 25
160
Resilience: Unit (Modulus of Resilience), kJ/m3 3.8 to 24
130
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
24
Strength to Weight: Axial, points 8.2 to 8.6
20
Strength to Weight: Bending, points 15 to 16
19
Thermal Shock Resistance, points 3.6 to 3.7
13

Alloy Composition

Aluminum (Al), % 99.35 to 100
0
Carbon (C), % 0
0 to 0.080
Chromium (Cr), % 0
20 to 25
Copper (Cu), % 0 to 0.050
0 to 0.75
Iron (Fe), % 0 to 0.65
28.3 to 45
Magnesium (Mg), % 0 to 0.050
0
Manganese (Mn), % 0 to 0.050
0 to 1.0
Molybdenum (Mo), % 0
4.0 to 4.8
Nickel (Ni), % 0
30 to 38
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0 to 0.65
0.6 to 1.0
Sulfur (S), % 0
0 to 0.015
Titanium (Ti), % 0 to 0.060
0.4 to 1.0
Vanadium (V), % 0 to 0.050
0
Zinc (Zn), % 0 to 0.1
0