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EN 1.4658 Stainless Steel vs. 242.0 Aluminum

EN 1.4658 stainless steel belongs to the iron alloys classification, while 242.0 aluminum belongs to the aluminum alloys. There are 29 material properties with values for both materials. Properties with values for just one material (7, 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 1.4658 stainless steel and the bottom bar is 242.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 260
70 to 110
Elastic (Young's, Tensile) Modulus, GPa 210
73
Elongation at Break, % 28
0.5 to 1.5
Fatigue Strength, MPa 530
55 to 110
Poisson's Ratio 0.27
0.33
Shear Modulus, GPa 81
27
Shear Strength, MPa 580
150 to 240
Tensile Strength: Ultimate (UTS), MPa 900
180 to 290
Tensile Strength: Yield (Proof), MPa 730
120 to 220

Thermal Properties

Latent Heat of Fusion, J/g 300
390
Maximum Temperature: Mechanical, °C 1100
210
Melting Completion (Liquidus), °C 1450
640
Melting Onset (Solidus), °C 1400
530
Specific Heat Capacity, J/kg-K 470
870
Thermal Conductivity, W/m-K 16
130 to 170
Thermal Expansion, µm/m-K 13
22

Otherwise Unclassified Properties

Base Metal Price, % relative 25
12
Density, g/cm3 7.8
3.1
Embodied Carbon, kg CO2/kg material 4.5
8.3
Embodied Energy, MJ/kg 61
150
Embodied Water, L/kg 200
1130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 240
1.3 to 3.4
Resilience: Unit (Modulus of Resilience), kJ/m3 1280
110 to 340
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 25
45
Strength to Weight: Axial, points 32
16 to 26
Strength to Weight: Bending, points 26
23 to 32
Thermal Diffusivity, mm2/s 4.3
50 to 62
Thermal Shock Resistance, points 24
8.0 to 13

Alloy Composition

Aluminum (Al), % 0
88.4 to 93.6
Carbon (C), % 0 to 0.030
0
Chromium (Cr), % 26 to 29
0 to 0.25
Cobalt (Co), % 0.5 to 2.0
0
Copper (Cu), % 0 to 1.0
3.5 to 4.5
Iron (Fe), % 50.9 to 63.7
0 to 1.0
Magnesium (Mg), % 0
1.2 to 1.8
Manganese (Mn), % 0 to 1.5
0 to 0.35
Molybdenum (Mo), % 4.0 to 5.0
0
Nickel (Ni), % 5.5 to 9.5
1.7 to 2.3
Nitrogen (N), % 0.3 to 0.5
0
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 0 to 0.5
0 to 0.7
Sulfur (S), % 0 to 0.010
0
Titanium (Ti), % 0
0 to 0.25
Zinc (Zn), % 0
0 to 0.35
Residuals, % 0
0 to 0.15