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EN 1.3975 Stainless Steel vs. 7076 Aluminum

EN 1.3975 stainless steel belongs to the iron alloys classification, while 7076 aluminum belongs to the aluminum alloys. There are 26 material properties with values for both materials. Properties with values for just one material (7, 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 1.3975 stainless steel and the bottom bar is 7076 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
160
Elastic (Young's, Tensile) Modulus, GPa 190
70
Elongation at Break, % 27
6.2
Fatigue Strength, MPa 230
170
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 76
27
Tensile Strength: Ultimate (UTS), MPa 660
530
Tensile Strength: Yield (Proof), MPa 320
460

Thermal Properties

Latent Heat of Fusion, J/g 340
380
Maximum Temperature: Mechanical, °C 910
170
Melting Completion (Liquidus), °C 1360
630
Melting Onset (Solidus), °C 1320
460
Specific Heat Capacity, J/kg-K 500
860
Thermal Expansion, µm/m-K 16
24

Otherwise Unclassified Properties

Base Metal Price, % relative 15
9.5
Density, g/cm3 7.5
3.0
Embodied Carbon, kg CO2/kg material 3.3
8.0
Embodied Energy, MJ/kg 47
150
Embodied Water, L/kg 150
1110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 150
31
Resilience: Unit (Modulus of Resilience), kJ/m3 270
1510
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 26
45
Strength to Weight: Axial, points 24
49
Strength to Weight: Bending, points 22
48
Thermal Shock Resistance, points 15
23

Alloy Composition

Aluminum (Al), % 0
86.9 to 91.2
Carbon (C), % 0 to 0.050
0
Chromium (Cr), % 16 to 18
0
Copper (Cu), % 0
0.3 to 1.0
Iron (Fe), % 58.2 to 65.4
0 to 0.6
Magnesium (Mg), % 0
1.2 to 2.0
Manganese (Mn), % 7.0 to 9.0
0.3 to 0.8
Molybdenum (Mo), % 0 to 1.0
0
Nickel (Ni), % 8.0 to 9.0
0
Nitrogen (N), % 0.080 to 0.18
0
Phosphorus (P), % 0 to 0.045
0
Silicon (Si), % 3.5 to 4.5
0 to 0.4
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
0 to 0.2
Zinc (Zn), % 0
7.0 to 8.0
Residuals, % 0
0 to 0.15