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850.0 Aluminum vs. EN 1.4729 Stainless Steel

850.0 aluminum belongs to the aluminum alloys classification, while EN 1.4729 stainless steel belongs to the iron alloys. There are 22 material properties with values for both materials. Properties with values for just one material (12, 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 850.0 aluminum and the bottom bar is EN 1.4729 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 45
260
Elastic (Young's, Tensile) Modulus, GPa 69
190
Elongation at Break, % 7.9
15
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
75

Thermal Properties

Latent Heat of Fusion, J/g 380
300
Maximum Temperature: Mechanical, °C 190
850
Melting Completion (Liquidus), °C 650
1420
Melting Onset (Solidus), °C 370
1380
Specific Heat Capacity, J/kg-K 850
490
Thermal Conductivity, W/m-K 180
24
Thermal Expansion, µm/m-K 23
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 47
2.8
Electrical Conductivity: Equal Weight (Specific), % IACS 140
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 14
7.5
Density, g/cm3 3.1
7.6
Embodied Carbon, kg CO2/kg material 8.5
2.1
Embodied Energy, MJ/kg 160
29
Embodied Water, L/kg 1160
100

Common Calculations

Stiffness to Weight: Axial, points 12
14
Stiffness to Weight: Bending, points 44
25
Thermal Diffusivity, mm2/s 69
6.5

Alloy Composition

Aluminum (Al), % 88.3 to 93.1
0
Carbon (C), % 0
0.3 to 0.5
Chromium (Cr), % 0
12 to 14
Copper (Cu), % 0.7 to 1.3
0
Iron (Fe), % 0 to 0.7
80.4 to 86.7
Magnesium (Mg), % 0 to 0.1
0
Manganese (Mn), % 0 to 0.1
0 to 1.0
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 0.7 to 1.3
0 to 1.0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.7
1.0 to 2.5
Sulfur (S), % 0
0 to 0.030
Tin (Sn), % 5.5 to 7.0
0
Titanium (Ti), % 0 to 0.2
0
Residuals, % 0 to 0.3
0