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EN 1.4655 Stainless Steel vs. EN AC-51500 Aluminum

EN 1.4655 stainless steel belongs to the iron alloys classification, while EN AC-51500 aluminum belongs to the aluminum alloys. There are 29 material properties with values for both materials. Properties with values for just one material (4, 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 EN 1.4655 stainless steel and the bottom bar is EN AC-51500 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
68
Elongation at Break, % 23 to 25
5.6
Fatigue Strength, MPa 320
120
Poisson's Ratio 0.27
0.33
Shear Modulus, GPa 78
26
Tensile Strength: Ultimate (UTS), MPa 720 to 730
280
Tensile Strength: Yield (Proof), MPa 450 to 480
160

Thermal Properties

Latent Heat of Fusion, J/g 290
430
Maximum Temperature: Mechanical, °C 1050
170
Melting Completion (Liquidus), °C 1420
630
Melting Onset (Solidus), °C 1370
590
Specific Heat Capacity, J/kg-K 480
910
Thermal Conductivity, W/m-K 15
120
Thermal Expansion, µm/m-K 13
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
26
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
88

Otherwise Unclassified Properties

Base Metal Price, % relative 15
9.5
Density, g/cm3 7.7
2.6
Embodied Carbon, kg CO2/kg material 2.9
9.0
Embodied Energy, MJ/kg 41
150
Embodied Water, L/kg 160
1150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 150 to 160
13
Resilience: Unit (Modulus of Resilience), kJ/m3 510 to 580
190
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
52
Strength to Weight: Axial, points 26
29
Strength to Weight: Bending, points 23
36
Thermal Diffusivity, mm2/s 4.0
49
Thermal Shock Resistance, points 20
13

Alloy Composition

Aluminum (Al), % 0
89.8 to 93.1
Carbon (C), % 0 to 0.030
0
Chromium (Cr), % 22 to 24
0
Copper (Cu), % 1.0 to 3.0
0 to 0.050
Iron (Fe), % 63.6 to 73.4
0 to 0.25
Magnesium (Mg), % 0
4.7 to 6.0
Manganese (Mn), % 0 to 2.0
0.4 to 0.8
Molybdenum (Mo), % 0.1 to 0.6
0
Nickel (Ni), % 3.5 to 5.5
0
Nitrogen (N), % 0.050 to 0.2
0
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 0 to 1.0
1.8 to 2.6
Sulfur (S), % 0 to 0.015
0
Titanium (Ti), % 0
0 to 0.25
Zinc (Zn), % 0
0 to 0.070
Residuals, % 0
0 to 0.15