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4343 Aluminum vs. SAE-AISI 1095 Steel

4343 aluminum belongs to the aluminum alloys classification, while SAE-AISI 1095 steel belongs to the iron alloys. There are 30 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 4343 aluminum and the bottom bar is SAE-AISI 1095 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
190
Elongation at Break, % 4.4
10 to 11
Fatigue Strength, MPa 45
310 to 370
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 27
72
Shear Strength, MPa 64
400 to 540
Tensile Strength: Ultimate (UTS), MPa 110
680 to 900
Tensile Strength: Yield (Proof), MPa 62
500 to 590

Thermal Properties

Latent Heat of Fusion, J/g 510
240
Maximum Temperature: Mechanical, °C 160
400
Melting Completion (Liquidus), °C 620
1450
Melting Onset (Solidus), °C 580
1410
Specific Heat Capacity, J/kg-K 900
470
Thermal Conductivity, W/m-K 180
47
Thermal Expansion, µm/m-K 22
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 44
9.6
Electrical Conductivity: Equal Weight (Specific), % IACS 150
11

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
1.8
Density, g/cm3 2.6
7.8
Embodied Carbon, kg CO2/kg material 7.9
1.4
Embodied Energy, MJ/kg 150
19
Embodied Water, L/kg 1100
45

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 4.1
63 to 84
Resilience: Unit (Modulus of Resilience), kJ/m3 27
660 to 930
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 53
24
Strength to Weight: Axial, points 12
24 to 32
Strength to Weight: Bending, points 20
22 to 26
Thermal Diffusivity, mm2/s 77
13
Thermal Shock Resistance, points 5.2
22 to 29

Alloy Composition

Aluminum (Al), % 90.3 to 93.2
0
Carbon (C), % 0
0.9 to 1.0
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 0 to 0.8
98.4 to 98.8
Manganese (Mn), % 0 to 0.1
0.3 to 0.5
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 6.8 to 8.2
0
Sulfur (S), % 0
0 to 0.050
Zinc (Zn), % 0 to 0.2
0
Residuals, % 0 to 0.15
0