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EN 1.4959 Stainless Steel vs. 5657 Aluminum

EN 1.4959 stainless steel belongs to the iron alloys classification, while 5657 aluminum belongs to the aluminum 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 EN 1.4959 stainless steel and the bottom bar is 5657 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
68
Elongation at Break, % 40
6.6 to 15
Fatigue Strength, MPa 170
74 to 88
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 77
26
Shear Strength, MPa 430
92 to 110
Tensile Strength: Ultimate (UTS), MPa 630
150 to 200
Tensile Strength: Yield (Proof), MPa 190
140 to 170

Thermal Properties

Latent Heat of Fusion, J/g 300
400
Maximum Temperature: Mechanical, °C 1090
180
Melting Completion (Liquidus), °C 1400
660
Melting Onset (Solidus), °C 1350
640
Specific Heat Capacity, J/kg-K 480
900
Thermal Conductivity, W/m-K 12
210
Thermal Expansion, µm/m-K 15
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.7
54
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
180

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
8.4
Embodied Energy, MJ/kg 76
160
Embodied Water, L/kg 200
1200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
9.7 to 27
Resilience: Unit (Modulus of Resilience), kJ/m3 96
140 to 200
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
50
Strength to Weight: Axial, points 22
15 to 20
Strength to Weight: Bending, points 20
23 to 28
Thermal Diffusivity, mm2/s 3.2
84
Thermal Shock Resistance, points 15
6.7 to 8.6

Alloy Composition

Aluminum (Al), % 0.25 to 0.65
98.5 to 99.4
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
Gallium (Ga), % 0
0 to 0.030
Iron (Fe), % 39.4 to 50.5
0 to 0.1
Magnesium (Mg), % 0
0.6 to 1.0
Manganese (Mn), % 0 to 1.5
0 to 0.030
Nickel (Ni), % 30 to 34
0
Nitrogen (N), % 0 to 0.030
0
Phosphorus (P), % 0 to 0.015
0
Silicon (Si), % 0 to 0.7
0 to 0.080
Sulfur (S), % 0 to 0.010
0
Titanium (Ti), % 0.25 to 0.65
0
Vanadium (V), % 0
0 to 0.050
Zinc (Zn), % 0
0 to 0.050
Residuals, % 0
0 to 0.050