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EN 1.4017 Stainless Steel vs. 6070 Aluminum

EN 1.4017 stainless steel belongs to the iron alloys classification, while 6070 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 1.4017 stainless steel and the bottom bar is 6070 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
70
Elongation at Break, % 14
5.6 to 8.6
Fatigue Strength, MPa 220
95 to 130
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 77
26
Shear Strength, MPa 350
220 to 240
Tensile Strength: Ultimate (UTS), MPa 580
370 to 380
Tensile Strength: Yield (Proof), MPa 390
350

Thermal Properties

Latent Heat of Fusion, J/g 280
410
Maximum Temperature: Mechanical, °C 870
160
Melting Completion (Liquidus), °C 1440
650
Melting Onset (Solidus), °C 1390
570
Specific Heat Capacity, J/kg-K 480
900
Thermal Conductivity, W/m-K 30
160
Thermal Expansion, µm/m-K 10
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
41
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
140

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
9.5
Density, g/cm3 7.7
2.7
Embodied Carbon, kg CO2/kg material 2.2
8.3
Embodied Energy, MJ/kg 31
150
Embodied Water, L/kg 120
1170

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 71
20 to 32
Resilience: Unit (Modulus of Resilience), kJ/m3 380
880 to 900
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
50
Strength to Weight: Axial, points 21
38
Strength to Weight: Bending, points 20
42 to 43
Thermal Diffusivity, mm2/s 8.1
65
Thermal Shock Resistance, points 20
16 to 17

Alloy Composition

Aluminum (Al), % 0
94.6 to 98
Carbon (C), % 0 to 0.080
0
Chromium (Cr), % 16 to 18
0 to 0.1
Copper (Cu), % 0
0.15 to 0.4
Iron (Fe), % 78.3 to 82.8
0 to 0.5
Magnesium (Mg), % 0
0.5 to 1.2
Manganese (Mn), % 0 to 1.0
0.4 to 1.0
Nickel (Ni), % 1.2 to 1.6
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
1.0 to 1.7
Sulfur (S), % 0 to 0.015
0
Titanium (Ti), % 0
0 to 0.15
Zinc (Zn), % 0
0 to 0.25
Residuals, % 0
0 to 0.15