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EN 1.4959 Stainless Steel vs. EN AC-41000 Aluminum

EN 1.4959 stainless steel belongs to the iron alloys classification, while EN AC-41000 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 1.4959 stainless steel and the bottom bar is EN AC-41000 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
69
Elongation at Break, % 40
4.5
Fatigue Strength, MPa 170
58 to 71
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 77
26
Tensile Strength: Ultimate (UTS), MPa 630
170 to 280
Tensile Strength: Yield (Proof), MPa 190
80 to 210

Thermal Properties

Latent Heat of Fusion, J/g 300
420
Maximum Temperature: Mechanical, °C 1090
170
Melting Completion (Liquidus), °C 1400
640
Melting Onset (Solidus), °C 1350
630
Specific Heat Capacity, J/kg-K 480
900
Thermal Conductivity, W/m-K 12
170
Thermal Expansion, µm/m-K 15
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.7
38
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
130

Otherwise Unclassified Properties

Base Metal Price, % relative 31
9.5
Density, g/cm3 8.0
2.7
Embodied Carbon, kg CO2/kg material 5.4
8.2
Embodied Energy, MJ/kg 76
150
Embodied Water, L/kg 200
1160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
6.4 to 11
Resilience: Unit (Modulus of Resilience), kJ/m3 96
46 to 300
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
51
Strength to Weight: Axial, points 22
18 to 29
Strength to Weight: Bending, points 20
26 to 35
Thermal Diffusivity, mm2/s 3.2
69
Thermal Shock Resistance, points 15
7.8 to 13

Alloy Composition

Aluminum (Al), % 0.25 to 0.65
95.2 to 97.6
Carbon (C), % 0.050 to 0.1
0
Chromium (Cr), % 19 to 22
0
Cobalt (Co), % 0 to 0.5
0
Copper (Cu), % 0 to 0.5
0 to 0.1
Iron (Fe), % 39.4 to 50.5
0 to 0.6
Lead (Pb), % 0
0 to 0.050
Magnesium (Mg), % 0
0.45 to 0.65
Manganese (Mn), % 0 to 1.5
0.3 to 0.5
Nickel (Ni), % 30 to 34
0 to 0.050
Nitrogen (N), % 0 to 0.030
0
Phosphorus (P), % 0 to 0.015
0
Silicon (Si), % 0 to 0.7
1.6 to 2.4
Sulfur (S), % 0 to 0.010
0
Tin (Sn), % 0
0 to 0.050
Titanium (Ti), % 0.25 to 0.65
0.050 to 0.2
Zinc (Zn), % 0
0 to 0.1
Residuals, % 0
0 to 0.15