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242.0 Aluminum vs. EN 1.4959 Stainless Steel

242.0 aluminum belongs to the aluminum alloys classification, while EN 1.4959 stainless steel belongs to the iron alloys. There are 30 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 242.0 aluminum and the bottom bar is EN 1.4959 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 73
200
Elongation at Break, % 0.5 to 1.5
40
Fatigue Strength, MPa 55 to 110
170
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 27
77
Shear Strength, MPa 150 to 240
430
Tensile Strength: Ultimate (UTS), MPa 180 to 290
630
Tensile Strength: Yield (Proof), MPa 120 to 220
190

Thermal Properties

Latent Heat of Fusion, J/g 390
300
Maximum Temperature: Mechanical, °C 210
1090
Melting Completion (Liquidus), °C 640
1400
Melting Onset (Solidus), °C 530
1350
Specific Heat Capacity, J/kg-K 870
480
Thermal Conductivity, W/m-K 130 to 170
12
Thermal Expansion, µm/m-K 22
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 33 to 44
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 96 to 130
2.0

Otherwise Unclassified Properties

Base Metal Price, % relative 12
31
Density, g/cm3 3.1
8.0
Embodied Carbon, kg CO2/kg material 8.3
5.4
Embodied Energy, MJ/kg 150
76
Embodied Water, L/kg 1130
200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 1.3 to 3.4
190
Resilience: Unit (Modulus of Resilience), kJ/m3 110 to 340
96
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 45
24
Strength to Weight: Axial, points 16 to 26
22
Strength to Weight: Bending, points 23 to 32
20
Thermal Diffusivity, mm2/s 50 to 62
3.2
Thermal Shock Resistance, points 8.0 to 13
15

Alloy Composition

Aluminum (Al), % 88.4 to 93.6
0.25 to 0.65
Carbon (C), % 0
0.050 to 0.1
Chromium (Cr), % 0 to 0.25
19 to 22
Cobalt (Co), % 0
0 to 0.5
Copper (Cu), % 3.5 to 4.5
0 to 0.5
Iron (Fe), % 0 to 1.0
39.4 to 50.5
Magnesium (Mg), % 1.2 to 1.8
0
Manganese (Mn), % 0 to 0.35
0 to 1.5
Nickel (Ni), % 1.7 to 2.3
30 to 34
Nitrogen (N), % 0
0 to 0.030
Phosphorus (P), % 0
0 to 0.015
Silicon (Si), % 0 to 0.7
0 to 0.7
Sulfur (S), % 0
0 to 0.010
Titanium (Ti), % 0 to 0.25
0.25 to 0.65
Zinc (Zn), % 0 to 0.35
0
Residuals, % 0 to 0.15
0