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EN 1.4971 Stainless Steel vs. A535.0 Aluminum

EN 1.4971 stainless steel belongs to the iron alloys classification, while A535.0 aluminum belongs to the aluminum alloys. There are 27 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 EN 1.4971 stainless steel and the bottom bar is A535.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
67
Elongation at Break, % 34
9.0
Fatigue Strength, MPa 270
95
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 81
25
Tensile Strength: Ultimate (UTS), MPa 800
250
Tensile Strength: Yield (Proof), MPa 340
120

Thermal Properties

Latent Heat of Fusion, J/g 300
390
Maximum Temperature: Mechanical, °C 1100
170
Melting Completion (Liquidus), °C 1460
620
Melting Onset (Solidus), °C 1410
550
Specific Heat Capacity, J/kg-K 450
910
Thermal Conductivity, W/m-K 13
100
Thermal Expansion, µm/m-K 15
24

Otherwise Unclassified Properties

Base Metal Price, % relative 70
9.5
Density, g/cm3 8.4
2.6
Embodied Carbon, kg CO2/kg material 7.6
9.3
Embodied Energy, MJ/kg 110
160
Embodied Water, L/kg 300
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 220
19
Resilience: Unit (Modulus of Resilience), kJ/m3 280
120
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
51
Strength to Weight: Axial, points 26
26
Strength to Weight: Bending, points 23
33
Thermal Diffusivity, mm2/s 3.4
42
Thermal Shock Resistance, points 19
11

Alloy Composition

Aluminum (Al), % 0
91.4 to 93.4
Carbon (C), % 0.080 to 0.16
0
Chromium (Cr), % 20 to 22.5
0
Cobalt (Co), % 18.5 to 21
0
Copper (Cu), % 0
0 to 0.1
Iron (Fe), % 24.3 to 37.1
0 to 0.2
Magnesium (Mg), % 0
6.5 to 7.5
Manganese (Mn), % 0 to 2.0
0.1 to 0.25
Molybdenum (Mo), % 2.5 to 3.5
0
Nickel (Ni), % 19 to 21
0
Niobium (Nb), % 0.75 to 1.3
0
Nitrogen (N), % 0.1 to 0.2
0
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 0 to 1.0
0 to 0.2
Sulfur (S), % 0 to 0.015
0
Titanium (Ti), % 0
0 to 0.25
Tungsten (W), % 2.0 to 3.0
0
Residuals, % 0
0 to 0.15