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EN 1.4982 Stainless Steel vs. 2618A Aluminum

EN 1.4982 stainless steel belongs to the iron alloys classification, while 2618A aluminum belongs to the aluminum alloys. There are 30 material properties with values for both materials. Properties with values for just one material (4, 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 1.4982 stainless steel and the bottom bar is 2618A aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
72
Elongation at Break, % 28
4.5
Fatigue Strength, MPa 420
120
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 76
27
Shear Strength, MPa 490
260
Tensile Strength: Ultimate (UTS), MPa 750
440
Tensile Strength: Yield (Proof), MPa 570
410

Thermal Properties

Latent Heat of Fusion, J/g 290
390
Maximum Temperature: Mechanical, °C 860
230
Melting Completion (Liquidus), °C 1430
670
Melting Onset (Solidus), °C 1390
560
Specific Heat Capacity, J/kg-K 470
880
Thermal Conductivity, W/m-K 13
150
Thermal Expansion, µm/m-K 16
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
37
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
110

Otherwise Unclassified Properties

Base Metal Price, % relative 22
11
Density, g/cm3 7.8
3.0
Embodied Carbon, kg CO2/kg material 4.9
8.4
Embodied Energy, MJ/kg 71
150
Embodied Water, L/kg 150
1150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
19
Resilience: Unit (Modulus of Resilience), kJ/m3 830
1180
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
47
Strength to Weight: Axial, points 27
41
Strength to Weight: Bending, points 23
44
Thermal Diffusivity, mm2/s 3.4
59
Thermal Shock Resistance, points 17
19

Alloy Composition

Aluminum (Al), % 0
91.5 to 95.2
Boron (B), % 0.0030 to 0.0090
0
Carbon (C), % 0.070 to 0.13
0
Chromium (Cr), % 14 to 16
0
Copper (Cu), % 0
1.8 to 2.7
Iron (Fe), % 61.8 to 69.7
0.9 to 1.4
Magnesium (Mg), % 0
1.2 to 1.8
Manganese (Mn), % 5.5 to 7.0
0 to 0.25
Molybdenum (Mo), % 0.8 to 1.2
0
Nickel (Ni), % 9.0 to 11
0.8 to 1.4
Niobium (Nb), % 0.75 to 1.3
0
Nitrogen (N), % 0 to 0.1
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
0.15 to 0.25
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
0 to 0.2
Vanadium (V), % 0.15 to 0.4
0
Zinc (Zn), % 0
0 to 0.15
Zirconium (Zr), % 0
0 to 0.25
Residuals, % 0
0 to 0.15