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772.0 Aluminum vs. EN 1.4938 Stainless Steel

772.0 aluminum belongs to the aluminum alloys classification, while EN 1.4938 stainless steel belongs to the iron alloys. There are 29 material properties with values for both materials. Properties with values for just one material (3, 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 772.0 aluminum and the bottom bar is EN 1.4938 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
200
Elongation at Break, % 6.3 to 8.4
16 to 17
Fatigue Strength, MPa 94 to 160
390 to 520
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 26
76
Tensile Strength: Ultimate (UTS), MPa 260 to 320
870 to 1030
Tensile Strength: Yield (Proof), MPa 220 to 250
640 to 870

Thermal Properties

Latent Heat of Fusion, J/g 380
270
Maximum Temperature: Mechanical, °C 180
750
Melting Completion (Liquidus), °C 630
1460
Melting Onset (Solidus), °C 580
1420
Specific Heat Capacity, J/kg-K 870
470
Thermal Conductivity, W/m-K 150
30
Thermal Expansion, µm/m-K 24
11

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
10
Density, g/cm3 3.0
7.8
Embodied Carbon, kg CO2/kg material 8.0
3.3
Embodied Energy, MJ/kg 150
47
Embodied Water, L/kg 1140
110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 16 to 25
140 to 160
Resilience: Unit (Modulus of Resilience), kJ/m3 350 to 430
1050 to 1920
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 46
25
Strength to Weight: Axial, points 25 to 31
31 to 37
Strength to Weight: Bending, points 31 to 36
26 to 29
Thermal Diffusivity, mm2/s 58
8.1
Thermal Shock Resistance, points 11 to 14
30 to 35

Alloy Composition

Aluminum (Al), % 91.2 to 93.2
0
Carbon (C), % 0
0.080 to 0.15
Chromium (Cr), % 0.060 to 0.2
11 to 12.5
Copper (Cu), % 0 to 0.1
0
Iron (Fe), % 0 to 0.15
80.5 to 84.8
Magnesium (Mg), % 0.6 to 0.8
0
Manganese (Mn), % 0 to 0.1
0.4 to 0.9
Molybdenum (Mo), % 0
1.5 to 2.0
Nickel (Ni), % 0
2.0 to 3.0
Nitrogen (N), % 0
0.020 to 0.040
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0 to 0.15
0 to 0.5
Sulfur (S), % 0
0 to 0.015
Titanium (Ti), % 0.1 to 0.2
0
Vanadium (V), % 0
0.25 to 0.4
Zinc (Zn), % 6.0 to 7.0
0
Residuals, % 0 to 0.15
0