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AISI 334 Stainless Steel vs. 7075 Aluminum

AISI 334 stainless steel belongs to the iron alloys classification, while 7075 aluminum belongs to the aluminum alloys. There are 26 material properties with values for both materials. Properties with values for just one material (9, 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 AISI 334 stainless steel and the bottom bar is 7075 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
70
Elongation at Break, % 34
1.8 to 12
Fatigue Strength, MPa 150
110 to 190
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 77
26
Shear Strength, MPa 360
150 to 340
Tensile Strength: Ultimate (UTS), MPa 540
240 to 590
Tensile Strength: Yield (Proof), MPa 190
120 to 510

Thermal Properties

Latent Heat of Fusion, J/g 290
380
Maximum Temperature: Mechanical, °C 1000
200
Melting Completion (Liquidus), °C 1410
640
Melting Onset (Solidus), °C 1370
480
Specific Heat Capacity, J/kg-K 480
870
Thermal Expansion, µm/m-K 16
23

Otherwise Unclassified Properties

Base Metal Price, % relative 22
10
Density, g/cm3 7.9
3.0
Embodied Carbon, kg CO2/kg material 4.1
8.3
Embodied Energy, MJ/kg 59
150
Embodied Water, L/kg 170
1120

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
7.8 to 44
Resilience: Unit (Modulus of Resilience), kJ/m3 96
110 to 1870
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
46
Strength to Weight: Axial, points 19
22 to 54
Strength to Weight: Bending, points 19
28 to 52
Thermal Shock Resistance, points 12
10 to 25

Alloy Composition

Aluminum (Al), % 0.15 to 0.6
86.9 to 91.4
Carbon (C), % 0 to 0.080
0
Chromium (Cr), % 18 to 20
0.18 to 0.28
Copper (Cu), % 0
1.2 to 2.0
Iron (Fe), % 55.7 to 62.7
0 to 0.5
Magnesium (Mg), % 0
2.1 to 2.9
Manganese (Mn), % 0 to 1.0
0 to 0.3
Nickel (Ni), % 19 to 21
0
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0 to 1.0
0 to 0.4
Sulfur (S), % 0 to 0.015
0
Titanium (Ti), % 0.15 to 0.6
0 to 0.2
Zinc (Zn), % 0
5.1 to 6.1
Zirconium (Zr), % 0
0 to 0.25
Residuals, % 0
0 to 0.15