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EN 1.4905 Stainless Steel vs. 7076 Aluminum

EN 1.4905 stainless steel belongs to the iron alloys classification, while 7076 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 7076 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
70
Elongation at Break, % 19
6.2
Fatigue Strength, MPa 330
170
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 76
27
Shear Strength, MPa 460
310
Tensile Strength: Ultimate (UTS), MPa 740
530
Tensile Strength: Yield (Proof), MPa 510
460

Thermal Properties

Latent Heat of Fusion, J/g 270
380
Maximum Temperature: Mechanical, °C 660
170
Melting Completion (Liquidus), °C 1480
630
Melting Onset (Solidus), °C 1440
460
Specific Heat Capacity, J/kg-K 470
860
Thermal Conductivity, W/m-K 26
140
Thermal Expansion, µm/m-K 11
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.7
35
Electrical Conductivity: Equal Weight (Specific), % IACS 4.2
100

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
9.5
Density, g/cm3 7.9
3.0
Embodied Carbon, kg CO2/kg material 2.8
8.0
Embodied Energy, MJ/kg 40
150
Embodied Water, L/kg 90
1110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
31
Resilience: Unit (Modulus of Resilience), kJ/m3 680
1510
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
45
Strength to Weight: Axial, points 26
49
Strength to Weight: Bending, points 23
48
Thermal Diffusivity, mm2/s 7.0
54
Thermal Shock Resistance, points 25
23

Alloy Composition

Aluminum (Al), % 0 to 0.040
86.9 to 91.2
Boron (B), % 0.00050 to 0.0050
0
Carbon (C), % 0.090 to 0.13
0
Chromium (Cr), % 8.5 to 9.5
0
Copper (Cu), % 0
0.3 to 1.0
Iron (Fe), % 86.2 to 88.8
0 to 0.6
Magnesium (Mg), % 0
1.2 to 2.0
Manganese (Mn), % 0.3 to 0.6
0.3 to 0.8
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 0.4
Sulfur (S), % 0 to 0.010
0
Titanium (Ti), % 0
0 to 0.2
Tungsten (W), % 0.9 to 1.1
0
Vanadium (V), % 0.18 to 0.25
0
Zinc (Zn), % 0
7.0 to 8.0
Residuals, % 0
0 to 0.15