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AISI 434 Stainless Steel vs. 850.0 Aluminum

AISI 434 stainless steel belongs to the iron alloys classification, while 850.0 aluminum belongs to the aluminum alloys. There are 31 material properties with values for both materials. Properties with values for just one material (5, 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 434 stainless steel and the bottom bar is 850.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170
45
Elastic (Young's, Tensile) Modulus, GPa 200
69
Elongation at Break, % 24
7.9
Fatigue Strength, MPa 220
59
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 78
26
Shear Strength, MPa 330
100
Tensile Strength: Ultimate (UTS), MPa 520
140
Tensile Strength: Yield (Proof), MPa 320
76

Thermal Properties

Latent Heat of Fusion, J/g 280
380
Maximum Temperature: Mechanical, °C 880
190
Melting Completion (Liquidus), °C 1510
650
Melting Onset (Solidus), °C 1430
370
Specific Heat Capacity, J/kg-K 480
850
Thermal Conductivity, W/m-K 25
180
Thermal Expansion, µm/m-K 10
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
47
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
140

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
14
Density, g/cm3 7.7
3.1
Embodied Carbon, kg CO2/kg material 2.4
8.5
Embodied Energy, MJ/kg 33
160
Embodied Water, L/kg 120
1160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
9.1
Resilience: Unit (Modulus of Resilience), kJ/m3 260
42
Stiffness to Weight: Axial, points 14
12
Stiffness to Weight: Bending, points 25
44
Strength to Weight: Axial, points 19
12
Strength to Weight: Bending, points 18
19
Thermal Diffusivity, mm2/s 6.7
69
Thermal Shock Resistance, points 19
6.1

Alloy Composition

Aluminum (Al), % 0
88.3 to 93.1
Carbon (C), % 0 to 0.12
0
Chromium (Cr), % 16 to 18
0
Copper (Cu), % 0
0.7 to 1.3
Iron (Fe), % 78.6 to 83.3
0 to 0.7
Magnesium (Mg), % 0
0 to 0.1
Manganese (Mn), % 0 to 1.0
0 to 0.1
Molybdenum (Mo), % 0.75 to 1.3
0
Nickel (Ni), % 0
0.7 to 1.3
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
0 to 0.7
Sulfur (S), % 0 to 0.030
0
Tin (Sn), % 0
5.5 to 7.0
Titanium (Ti), % 0
0 to 0.2
Residuals, % 0
0 to 0.3