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EN 1.4849 Stainless Steel vs. 238.0 Aluminum

EN 1.4849 stainless steel belongs to the iron alloys classification, while 238.0 aluminum belongs to the aluminum alloys. There are 27 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 1.4849 stainless steel and the bottom bar is 238.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
76
Elongation at Break, % 4.5
1.5
Fatigue Strength, MPa 120
110
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 75
28
Tensile Strength: Ultimate (UTS), MPa 480
210
Tensile Strength: Yield (Proof), MPa 250
170

Thermal Properties

Latent Heat of Fusion, J/g 320
430
Maximum Temperature: Mechanical, °C 1020
170
Melting Completion (Liquidus), °C 1390
600
Melting Onset (Solidus), °C 1340
510
Specific Heat Capacity, J/kg-K 480
840
Thermal Conductivity, W/m-K 12
100
Thermal Expansion, µm/m-K 15
21

Otherwise Unclassified Properties

Base Metal Price, % relative 42
12
Density, g/cm3 8.0
3.4
Embodied Carbon, kg CO2/kg material 7.1
7.4
Embodied Energy, MJ/kg 100
140
Embodied Water, L/kg 200
1040

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 18
2.9
Resilience: Unit (Modulus of Resilience), kJ/m3 160
180
Stiffness to Weight: Axial, points 13
12
Stiffness to Weight: Bending, points 24
42
Strength to Weight: Axial, points 17
17
Strength to Weight: Bending, points 17
23
Thermal Diffusivity, mm2/s 3.2
37
Thermal Shock Resistance, points 11
9.1

Alloy Composition

Aluminum (Al), % 0
81.9 to 84.9
Carbon (C), % 0.3 to 0.5
0
Chromium (Cr), % 18 to 21
0
Copper (Cu), % 0
9.5 to 10.5
Iron (Fe), % 32.6 to 43.5
1.0 to 1.5
Magnesium (Mg), % 0
0 to 0.25
Manganese (Mn), % 0 to 2.0
0
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 36 to 39
0
Niobium (Nb), % 1.2 to 1.8
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 1.0 to 2.5
3.6 to 4.4
Sulfur (S), % 0 to 0.030
0
Zinc (Zn), % 0
1.0 to 1.5