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4343 Aluminum vs. EN 1.4905 Stainless Steel

4343 aluminum belongs to the aluminum alloys classification, while EN 1.4905 stainless steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (4, 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 4343 aluminum and the bottom bar is EN 1.4905 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
190
Elongation at Break, % 4.4
19
Fatigue Strength, MPa 45
330
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 27
76
Shear Strength, MPa 64
460
Tensile Strength: Ultimate (UTS), MPa 110
740
Tensile Strength: Yield (Proof), MPa 62
510

Thermal Properties

Latent Heat of Fusion, J/g 510
270
Maximum Temperature: Mechanical, °C 160
660
Melting Completion (Liquidus), °C 620
1480
Melting Onset (Solidus), °C 580
1440
Specific Heat Capacity, J/kg-K 900
470
Thermal Conductivity, W/m-K 180
26
Thermal Expansion, µm/m-K 22
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 44
3.7
Electrical Conductivity: Equal Weight (Specific), % IACS 150
4.2

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
9.5
Density, g/cm3 2.6
7.9
Embodied Carbon, kg CO2/kg material 7.9
2.8
Embodied Energy, MJ/kg 150
40
Embodied Water, L/kg 1100
90

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 4.1
130
Resilience: Unit (Modulus of Resilience), kJ/m3 27
680
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 53
24
Strength to Weight: Axial, points 12
26
Strength to Weight: Bending, points 20
23
Thermal Diffusivity, mm2/s 77
7.0
Thermal Shock Resistance, points 5.2
25

Alloy Composition

Aluminum (Al), % 90.3 to 93.2
0 to 0.040
Boron (B), % 0
0.00050 to 0.0050
Carbon (C), % 0
0.090 to 0.13
Chromium (Cr), % 0
8.5 to 9.5
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 0 to 0.8
86.2 to 88.8
Manganese (Mn), % 0 to 0.1
0.3 to 0.6
Molybdenum (Mo), % 0
0.9 to 1.1
Nickel (Ni), % 0
0.1 to 0.4
Niobium (Nb), % 0
0.060 to 0.1
Nitrogen (N), % 0
0.050 to 0.090
Phosphorus (P), % 0
0 to 0.020
Silicon (Si), % 6.8 to 8.2
0.1 to 0.5
Sulfur (S), % 0
0 to 0.010
Tungsten (W), % 0
0.9 to 1.1
Vanadium (V), % 0
0.18 to 0.25
Zinc (Zn), % 0 to 0.2
0
Residuals, % 0 to 0.15
0