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EN 1.4958 Stainless Steel vs. 6110 Aluminum

EN 1.4958 stainless steel belongs to the iron alloys classification, while 6110 aluminum belongs to the aluminum alloys. There are 30 material properties with values for both materials. Properties with values for just one material (2, 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 1.4958 stainless steel and the bottom bar is 6110 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
70
Elongation at Break, % 40
2.2
Fatigue Strength, MPa 170
120
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 77
26
Shear Strength, MPa 430
290
Tensile Strength: Ultimate (UTS), MPa 630
500
Tensile Strength: Yield (Proof), MPa 190
500

Thermal Properties

Latent Heat of Fusion, J/g 300
410
Maximum Temperature: Mechanical, °C 1090
170
Melting Completion (Liquidus), °C 1400
640
Melting Onset (Solidus), °C 1350
600
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
42
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
140

Otherwise Unclassified Properties

Base Metal Price, % relative 30
9.5
Density, g/cm3 8.0
2.8
Embodied Carbon, kg CO2/kg material 5.3
8.2
Embodied Energy, MJ/kg 75
150
Embodied Water, L/kg 200
1170

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
11
Resilience: Unit (Modulus of Resilience), kJ/m3 95
1770
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
50
Strength to Weight: Axial, points 22
51
Strength to Weight: Bending, points 20
51
Thermal Diffusivity, mm2/s 3.2
67
Thermal Shock Resistance, points 15
22

Alloy Composition

Aluminum (Al), % 0.2 to 0.5
94.4 to 98.4
Carbon (C), % 0.030 to 0.080
0
Chromium (Cr), % 19 to 22
0.040 to 0.25
Cobalt (Co), % 0 to 0.5
0
Copper (Cu), % 0 to 0.5
0.2 to 0.7
Iron (Fe), % 41.1 to 50.6
0 to 0.8
Magnesium (Mg), % 0
0.5 to 1.1
Manganese (Mn), % 0 to 1.5
0.2 to 0.7
Nickel (Ni), % 30 to 32.5
0
Niobium (Nb), % 0 to 0.1
0
Nitrogen (N), % 0 to 0.030
0
Phosphorus (P), % 0 to 0.015
0
Silicon (Si), % 0 to 0.7
0.7 to 1.5
Sulfur (S), % 0 to 0.010
0
Titanium (Ti), % 0.2 to 0.5
0 to 0.15
Zinc (Zn), % 0
0 to 0.3
Residuals, % 0
0 to 0.15