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2025 Aluminum vs. AISI 316Ti Stainless Steel

2025 aluminum belongs to the aluminum alloys classification, while AISI 316Ti stainless steel belongs to the iron alloys. There are 31 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 2025 aluminum and the bottom bar is AISI 316Ti stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 110
190
Elastic (Young's, Tensile) Modulus, GPa 72
200
Elongation at Break, % 15
41
Fatigue Strength, MPa 130
200
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 27
82
Shear Strength, MPa 240
400
Tensile Strength: Ultimate (UTS), MPa 400
580
Tensile Strength: Yield (Proof), MPa 260
230

Thermal Properties

Latent Heat of Fusion, J/g 400
290
Maximum Temperature: Mechanical, °C 190
940
Melting Completion (Liquidus), °C 640
1450
Melting Onset (Solidus), °C 520
1380
Specific Heat Capacity, J/kg-K 870
470
Thermal Conductivity, W/m-K 150
15
Thermal Expansion, µm/m-K 23
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 40
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 120
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 10
19
Density, g/cm3 3.0
7.9
Embodied Carbon, kg CO2/kg material 7.9
4.0
Embodied Energy, MJ/kg 150
55
Embodied Water, L/kg 1130
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 55
190
Resilience: Unit (Modulus of Resilience), kJ/m3 450
140
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 46
25
Strength to Weight: Axial, points 37
20
Strength to Weight: Bending, points 40
20
Thermal Diffusivity, mm2/s 58
4.0
Thermal Shock Resistance, points 18
13

Alloy Composition

Aluminum (Al), % 90.9 to 95.2
0
Carbon (C), % 0
0 to 0.080
Chromium (Cr), % 0 to 0.1
16 to 18
Copper (Cu), % 3.9 to 5.0
0
Iron (Fe), % 0 to 1.0
61.3 to 72
Magnesium (Mg), % 0 to 0.050
0
Manganese (Mn), % 0.4 to 1.2
0 to 2.0
Molybdenum (Mo), % 0
2.0 to 3.0
Nickel (Ni), % 0
10 to 14
Nitrogen (N), % 0
0 to 0.1
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0.5 to 1.2
0 to 0.75
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.15
0 to 0.7
Zinc (Zn), % 0 to 0.25
0
Residuals, % 0 to 0.15
0