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EN 1.4003 Stainless Steel vs. 772.0 Aluminum

EN 1.4003 stainless steel belongs to the iron alloys classification, while 772.0 aluminum belongs to the aluminum alloys. There are 29 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 EN 1.4003 stainless steel and the bottom bar is 772.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
69
Elongation at Break, % 22
6.3 to 8.4
Fatigue Strength, MPa 210
94 to 160
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 76
26
Tensile Strength: Ultimate (UTS), MPa 540
260 to 320
Tensile Strength: Yield (Proof), MPa 320
220 to 250

Thermal Properties

Latent Heat of Fusion, J/g 270
380
Maximum Temperature: Mechanical, °C 720
180
Melting Completion (Liquidus), °C 1440
630
Melting Onset (Solidus), °C 1400
580
Specific Heat Capacity, J/kg-K 480
870
Thermal Conductivity, W/m-K 25
150
Thermal Expansion, µm/m-K 10
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
35
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
110

Otherwise Unclassified Properties

Base Metal Price, % relative 6.5
9.5
Density, g/cm3 7.8
3.0
Embodied Carbon, kg CO2/kg material 1.9
8.0
Embodied Energy, MJ/kg 27
150
Embodied Water, L/kg 97
1140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 100
16 to 25
Resilience: Unit (Modulus of Resilience), kJ/m3 260
350 to 430
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
46
Strength to Weight: Axial, points 19
25 to 31
Strength to Weight: Bending, points 19
31 to 36
Thermal Diffusivity, mm2/s 6.7
58
Thermal Shock Resistance, points 19
11 to 14

Alloy Composition


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Aluminum (Al), % 0
91.2 to 93.2
Carbon (C), % 0 to 0.030
0
Chromium (Cr), % 10.5 to 12.5
0.060 to 0.2
Copper (Cu), % 0
0 to 0.1
Iron (Fe), % 83.9 to 89.2
0 to 0.15
Magnesium (Mg), % 0
0.6 to 0.8
Manganese (Mn), % 0 to 1.5
0 to 0.1
Nickel (Ni), % 0.3 to 1.0
0
Nitrogen (N), % 0 to 0.030
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
0 to 0.15
Sulfur (S), % 0 to 0.015
0
Titanium (Ti), % 0
0.1 to 0.2
Zinc (Zn), % 0
6.0 to 7.0
Residuals, % 0
0 to 0.15