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EN 1.4905 Stainless Steel vs. 7005 Aluminum

EN 1.4905 stainless steel belongs to the iron alloys classification, while 7005 aluminum belongs to the aluminum alloys. There are 30 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 1.4905 stainless steel and the bottom bar is 7005 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
70
Elongation at Break, % 19
10 to 20
Fatigue Strength, MPa 330
100 to 190
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 76
26
Shear Strength, MPa 460
120 to 230
Tensile Strength: Ultimate (UTS), MPa 740
200 to 400
Tensile Strength: Yield (Proof), MPa 510
95 to 350

Thermal Properties

Latent Heat of Fusion, J/g 270
380
Maximum Temperature: Mechanical, °C 660
200
Melting Completion (Liquidus), °C 1480
640
Melting Onset (Solidus), °C 1440
610
Specific Heat Capacity, J/kg-K 470
880
Thermal Conductivity, W/m-K 26
140 to 170
Thermal Expansion, µm/m-K 11
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.7
35 to 43
Electrical Conductivity: Equal Weight (Specific), % IACS 4.2
110 to 130

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
9.5
Density, g/cm3 7.9
2.9
Embodied Carbon, kg CO2/kg material 2.8
8.3
Embodied Energy, MJ/kg 40
150
Embodied Water, L/kg 90
1150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
32 to 57
Resilience: Unit (Modulus of Resilience), kJ/m3 680
65 to 850
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
47
Strength to Weight: Axial, points 26
19 to 38
Strength to Weight: Bending, points 23
26 to 41
Thermal Diffusivity, mm2/s 7.0
54 to 65
Thermal Shock Resistance, points 25
8.7 to 18

Alloy Composition

Aluminum (Al), % 0 to 0.040
91 to 94.7
Boron (B), % 0.00050 to 0.0050
0
Carbon (C), % 0.090 to 0.13
0
Chromium (Cr), % 8.5 to 9.5
0.060 to 0.2
Copper (Cu), % 0
0 to 0.1
Iron (Fe), % 86.2 to 88.8
0 to 0.4
Magnesium (Mg), % 0
1.0 to 1.8
Manganese (Mn), % 0.3 to 0.6
0.2 to 0.7
Molybdenum (Mo), % 0.9 to 1.1
0
Nickel (Ni), % 0.1 to 0.4
0
Niobium (Nb), % 0.060 to 0.1
0
Nitrogen (N), % 0.050 to 0.090
0
Phosphorus (P), % 0 to 0.020
0
Silicon (Si), % 0.1 to 0.5
0 to 0.35
Sulfur (S), % 0 to 0.010
0
Titanium (Ti), % 0
0.010 to 0.060
Tungsten (W), % 0.9 to 1.1
0
Vanadium (V), % 0.18 to 0.25
0
Zinc (Zn), % 0
4.0 to 5.0
Zirconium (Zr), % 0
0.080 to 0.2
Residuals, % 0
0 to 0.15