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296.0 Aluminum vs. EN 1.4557 Stainless Steel

296.0 aluminum belongs to the aluminum alloys classification, while EN 1.4557 stainless steel belongs to the iron 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 296.0 aluminum and the bottom bar is EN 1.4557 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 75 to 90
160
Elastic (Young's, Tensile) Modulus, GPa 72
200
Elongation at Break, % 3.2 to 7.1
40
Fatigue Strength, MPa 47 to 70
260
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 27
80
Tensile Strength: Ultimate (UTS), MPa 260 to 270
560
Tensile Strength: Yield (Proof), MPa 120 to 180
300

Thermal Properties

Latent Heat of Fusion, J/g 420
300
Maximum Temperature: Mechanical, °C 170
1090
Melting Completion (Liquidus), °C 630
1460
Melting Onset (Solidus), °C 540
1420
Specific Heat Capacity, J/kg-K 870
460
Thermal Conductivity, W/m-K 130 to 150
15
Thermal Expansion, µm/m-K 22
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 33 to 37
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 99 to 110
2.2

Otherwise Unclassified Properties

Base Metal Price, % relative 11
29
Density, g/cm3 3.0
8.0
Embodied Carbon, kg CO2/kg material 7.8
5.6
Embodied Energy, MJ/kg 150
76
Embodied Water, L/kg 1110
190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 7.6 to 15
190
Resilience: Unit (Modulus of Resilience), kJ/m3 110 to 220
210
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 46
24
Strength to Weight: Axial, points 24 to 25
19
Strength to Weight: Bending, points 30 to 31
19
Thermal Diffusivity, mm2/s 51 to 56
4.0
Thermal Shock Resistance, points 12
12

Alloy Composition

Aluminum (Al), % 89 to 94
0
Carbon (C), % 0
0 to 0.020
Chromium (Cr), % 0
19.5 to 20.5
Copper (Cu), % 4.0 to 5.0
0.5 to 1.0
Iron (Fe), % 0 to 1.2
49.5 to 56.3
Magnesium (Mg), % 0 to 0.050
0
Manganese (Mn), % 0 to 0.35
0 to 1.2
Molybdenum (Mo), % 0
6.0 to 7.0
Nickel (Ni), % 0 to 0.35
17.5 to 19.5
Nitrogen (N), % 0
0.18 to 0.24
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 2.0 to 3.0
0 to 1.0
Sulfur (S), % 0
0 to 0.010
Titanium (Ti), % 0 to 0.25
0
Zinc (Zn), % 0 to 0.5
0
Residuals, % 0 to 0.35
0