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EN 1.4309 Stainless Steel vs. 383.0 Aluminum

EN 1.4309 stainless steel belongs to the iron alloys classification, while 383.0 aluminum belongs to the aluminum alloys. There are 31 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 EN 1.4309 stainless steel and the bottom bar is 383.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
75
Elastic (Young's, Tensile) Modulus, GPa 200
73
Elongation at Break, % 34
3.5
Fatigue Strength, MPa 170
150
Impact Strength: V-Notched Charpy, J 90
4.0
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 77
28
Tensile Strength: Ultimate (UTS), MPa 490
280
Tensile Strength: Yield (Proof), MPa 210
150

Thermal Properties

Latent Heat of Fusion, J/g 290
540
Maximum Temperature: Mechanical, °C 960
170
Melting Completion (Liquidus), °C 1420
580
Melting Onset (Solidus), °C 1380
540
Specific Heat Capacity, J/kg-K 480
880
Thermal Conductivity, W/m-K 15
96
Thermal Expansion, µm/m-K 17
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
23
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
74

Otherwise Unclassified Properties

Base Metal Price, % relative 16
10
Density, g/cm3 7.8
2.8
Embodied Carbon, kg CO2/kg material 3.1
7.5
Embodied Energy, MJ/kg 45
140
Embodied Water, L/kg 150
1030

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
8.2
Resilience: Unit (Modulus of Resilience), kJ/m3 110
150
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
50
Strength to Weight: Axial, points 18
28
Strength to Weight: Bending, points 18
34
Thermal Diffusivity, mm2/s 4.1
39
Thermal Shock Resistance, points 11
13

Alloy Composition

Aluminum (Al), % 0
79.7 to 88.5
Carbon (C), % 0 to 0.030
0
Chromium (Cr), % 18 to 20
0
Copper (Cu), % 0
2.0 to 3.0
Iron (Fe), % 64.2 to 73
0 to 1.3
Magnesium (Mg), % 0
0 to 0.1
Manganese (Mn), % 0 to 2.0
0 to 0.5
Nickel (Ni), % 9.0 to 12
0 to 0.3
Nitrogen (N), % 0 to 0.2
0
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 0 to 1.5
9.5 to 11.5
Sulfur (S), % 0 to 0.025
0
Tin (Sn), % 0
0 to 0.15
Zinc (Zn), % 0
0 to 3.0
Residuals, % 0
0 to 0.5