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AISI 334 Stainless Steel vs. 707.0 Aluminum

AISI 334 stainless steel belongs to the iron alloys classification, while 707.0 aluminum belongs to the aluminum alloys. There are 25 material properties with values for both materials. Properties with values for just one material (10, 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 707.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
70
Elongation at Break, % 34
1.7 to 3.4
Fatigue Strength, MPa 150
75 to 140
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 77
26
Tensile Strength: Ultimate (UTS), MPa 540
270 to 300
Tensile Strength: Yield (Proof), MPa 190
170 to 250

Thermal Properties

Latent Heat of Fusion, J/g 290
380
Maximum Temperature: Mechanical, °C 1000
180
Melting Completion (Liquidus), °C 1410
630
Melting Onset (Solidus), °C 1370
600
Specific Heat Capacity, J/kg-K 480
880
Thermal Expansion, µm/m-K 16
24

Otherwise Unclassified Properties

Base Metal Price, % relative 22
9.5
Density, g/cm3 7.9
2.9
Embodied Carbon, kg CO2/kg material 4.1
8.3
Embodied Energy, MJ/kg 59
150
Embodied Water, L/kg 170
1140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
4.3 to 8.6
Resilience: Unit (Modulus of Resilience), kJ/m3 96
210 to 430
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
47
Strength to Weight: Axial, points 19
26 to 29
Strength to Weight: Bending, points 19
32 to 34
Thermal Shock Resistance, points 12
12 to 13

Alloy Composition

Aluminum (Al), % 0.15 to 0.6
90.5 to 93.6
Carbon (C), % 0 to 0.080
0
Chromium (Cr), % 18 to 20
0.2 to 0.4
Copper (Cu), % 0
0 to 0.2
Iron (Fe), % 55.7 to 62.7
0 to 0.8
Magnesium (Mg), % 0
1.8 to 2.4
Manganese (Mn), % 0 to 1.0
0.4 to 0.6
Nickel (Ni), % 19 to 21
0
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0 to 1.0
0 to 0.2
Sulfur (S), % 0 to 0.015
0
Titanium (Ti), % 0.15 to 0.6
0 to 0.25
Zinc (Zn), % 0
4.0 to 4.5
Residuals, % 0
0 to 0.15