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EN 1.4308 Stainless Steel vs. 356.0 Aluminum

EN 1.4308 stainless steel belongs to the iron alloys classification, while 356.0 aluminum belongs to the aluminum alloys. There are 30 material properties with values for both materials. Properties with values for just one material (6, 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 1.4308 stainless steel and the bottom bar is 356.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
55 to 75
Elastic (Young's, Tensile) Modulus, GPa 200
70
Elongation at Break, % 34
2.0 to 3.8
Fatigue Strength, MPa 160
55 to 75
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 77
27
Tensile Strength: Ultimate (UTS), MPa 510
160 to 240
Tensile Strength: Yield (Proof), MPa 200
100 to 190

Thermal Properties

Latent Heat of Fusion, J/g 290
500
Maximum Temperature: Mechanical, °C 960
170
Melting Completion (Liquidus), °C 1420
620
Melting Onset (Solidus), °C 1380
570
Specific Heat Capacity, J/kg-K 480
900
Thermal Conductivity, W/m-K 15
150 to 170
Thermal Expansion, µm/m-K 17
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
40 to 43
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
140 to 150

Otherwise Unclassified Properties

Base Metal Price, % relative 15
9.5
Density, g/cm3 7.8
2.6
Embodied Carbon, kg CO2/kg material 3.0
8.0
Embodied Energy, MJ/kg 43
150
Embodied Water, L/kg 150
1110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
3.2 to 8.2
Resilience: Unit (Modulus of Resilience), kJ/m3 100
70 to 250
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
53
Strength to Weight: Axial, points 18
17 to 26
Strength to Weight: Bending, points 18
25 to 33
Thermal Diffusivity, mm2/s 4.1
64 to 71
Thermal Shock Resistance, points 11
7.6 to 11

Alloy Composition


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Aluminum (Al), % 0
90.1 to 93.3
Carbon (C), % 0 to 0.070
0
Chromium (Cr), % 18 to 20
0
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 65.9 to 74
0 to 0.6
Magnesium (Mg), % 0
0.2 to 0.45
Manganese (Mn), % 0 to 1.5
0 to 0.35
Nickel (Ni), % 8.0 to 11
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.5
6.5 to 7.5
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
0 to 0.25
Zinc (Zn), % 0
0 to 0.35
Residuals, % 0
0 to 0.15