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EN 1.4301 Stainless Steel vs. C443.0 Aluminum

EN 1.4301 stainless steel belongs to the iron alloys classification, while C443.0 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 1.4301 stainless steel and the bottom bar is C443.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190 to 270
65
Elastic (Young's, Tensile) Modulus, GPa 200
71
Elongation at Break, % 14 to 46
9.0
Fatigue Strength, MPa 200 to 330
120
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 77
27
Shear Strength, MPa 430 to 550
130
Tensile Strength: Ultimate (UTS), MPa 610 to 900
230
Tensile Strength: Yield (Proof), MPa 220 to 570
100

Thermal Properties

Latent Heat of Fusion, J/g 290
470
Maximum Temperature: Mechanical, °C 940
170
Melting Completion (Liquidus), °C 1430
630
Melting Onset (Solidus), °C 1380
600
Specific Heat Capacity, J/kg-K 480
900
Thermal Conductivity, W/m-K 15
140
Thermal Expansion, µm/m-K 16
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
37
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
120

Otherwise Unclassified Properties

Base Metal Price, % relative 15
9.5
Density, g/cm3 7.8
2.7
Embodied Carbon, kg CO2/kg material 3.0
7.9
Embodied Energy, MJ/kg 43
150
Embodied Water, L/kg 140
1120

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110 to 220
17
Resilience: Unit (Modulus of Resilience), kJ/m3 120 to 820
70
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
51
Strength to Weight: Axial, points 22 to 32
24
Strength to Weight: Bending, points 20 to 27
31
Thermal Diffusivity, mm2/s 4.0
58
Thermal Shock Resistance, points 14 to 20
10

Alloy Composition

Aluminum (Al), % 0
89.6 to 95.5
Carbon (C), % 0 to 0.070
0
Chromium (Cr), % 17.5 to 19.5
0
Copper (Cu), % 0
0 to 0.6
Iron (Fe), % 66.8 to 74.5
0 to 2.0
Magnesium (Mg), % 0
0 to 0.1
Manganese (Mn), % 0 to 2.0
0 to 0.35
Nickel (Ni), % 8.0 to 10.5
0 to 0.5
Nitrogen (N), % 0 to 0.1
0
Phosphorus (P), % 0 to 0.045
0
Silicon (Si), % 0 to 1.0
4.5 to 6.0
Sulfur (S), % 0 to 0.015
0
Tin (Sn), % 0
0 to 0.15
Zinc (Zn), % 0
0 to 0.5
Residuals, % 0
0 to 0.25