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EN 1.4945 Stainless Steel vs. 308.0 Aluminum

EN 1.4945 stainless steel belongs to the iron alloys classification, while 308.0 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 1.4945 stainless steel and the bottom bar is 308.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200 to 220
70
Elastic (Young's, Tensile) Modulus, GPa 200
73
Elongation at Break, % 19 to 34
2.0
Fatigue Strength, MPa 230 to 350
89
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 77
27
Shear Strength, MPa 430 to 460
150
Tensile Strength: Ultimate (UTS), MPa 640 to 740
190
Tensile Strength: Yield (Proof), MPa 290 to 550
110

Thermal Properties

Latent Heat of Fusion, J/g 290
470
Maximum Temperature: Mechanical, °C 920
170
Melting Completion (Liquidus), °C 1490
620
Melting Onset (Solidus), °C 1440
540
Specific Heat Capacity, J/kg-K 470
870
Thermal Conductivity, W/m-K 14
140
Thermal Expansion, µm/m-K 17
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
37
Electrical Conductivity: Equal Weight (Specific), % IACS 3.2
110

Otherwise Unclassified Properties

Base Metal Price, % relative 30
10
Density, g/cm3 8.1
2.9
Embodied Carbon, kg CO2/kg material 5.0
7.7
Embodied Energy, MJ/kg 73
140
Embodied Water, L/kg 150
1080

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130 to 180
3.3
Resilience: Unit (Modulus of Resilience), kJ/m3 210 to 760
83
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
47
Strength to Weight: Axial, points 22 to 25
18
Strength to Weight: Bending, points 20 to 22
25
Thermal Diffusivity, mm2/s 3.7
55
Thermal Shock Resistance, points 14 to 16
9.2

Alloy Composition

Aluminum (Al), % 0
85.7 to 91
Carbon (C), % 0.040 to 0.1
0
Chromium (Cr), % 15.5 to 17.5
0
Copper (Cu), % 0
4.0 to 5.0
Iron (Fe), % 57.9 to 65.7
0 to 1.0
Magnesium (Mg), % 0
0 to 0.1
Manganese (Mn), % 0 to 1.5
0 to 0.5
Nickel (Ni), % 15.5 to 17.5
0
Niobium (Nb), % 0.4 to 1.2
0
Nitrogen (N), % 0.060 to 0.14
0
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 0.3 to 0.6
5.0 to 6.0
Sulfur (S), % 0 to 0.015
0
Titanium (Ti), % 0
0 to 0.25
Tungsten (W), % 2.5 to 3.5
0
Zinc (Zn), % 0
0 to 1.0
Residuals, % 0
0 to 0.5