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6351 Aluminum vs. EN 1.8880 Steel

6351 aluminum belongs to the aluminum alloys classification, while EN 1.8880 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 6351 aluminum and the bottom bar is EN 1.8880 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
190
Elongation at Break, % 7.8 to 18
16
Fatigue Strength, MPa 79 to 130
470
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
73
Shear Strength, MPa 84 to 200
510
Tensile Strength: Ultimate (UTS), MPa 140 to 310
830
Tensile Strength: Yield (Proof), MPa 95 to 270
720

Thermal Properties

Latent Heat of Fusion, J/g 410
260
Maximum Temperature: Mechanical, °C 160
420
Melting Completion (Liquidus), °C 650
1460
Melting Onset (Solidus), °C 570
1420
Specific Heat Capacity, J/kg-K 900
470
Thermal Conductivity, W/m-K 180
40
Thermal Expansion, µm/m-K 23
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 46
8.1
Electrical Conductivity: Equal Weight (Specific), % IACS 150
9.3

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
3.7
Density, g/cm3 2.7
7.8
Embodied Carbon, kg CO2/kg material 8.3
1.9
Embodied Energy, MJ/kg 150
26
Embodied Water, L/kg 1180
54

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 20 to 38
130
Resilience: Unit (Modulus of Resilience), kJ/m3 65 to 540
1370
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
24
Strength to Weight: Axial, points 14 to 32
29
Strength to Weight: Bending, points 22 to 38
25
Thermal Diffusivity, mm2/s 72
11
Thermal Shock Resistance, points 6.1 to 14
24

Alloy Composition

Aluminum (Al), % 96 to 98.5
0
Boron (B), % 0
0 to 0.0050
Carbon (C), % 0
0 to 0.2
Chromium (Cr), % 0
0 to 1.5
Copper (Cu), % 0 to 0.1
0 to 0.3
Iron (Fe), % 0 to 0.5
91.9 to 100
Magnesium (Mg), % 0.4 to 0.8
0
Manganese (Mn), % 0.4 to 0.8
0 to 1.7
Molybdenum (Mo), % 0
0 to 0.7
Nickel (Ni), % 0
0 to 2.5
Niobium (Nb), % 0
0 to 0.060
Nitrogen (N), % 0
0 to 0.015
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0.7 to 1.3
0 to 0.8
Sulfur (S), % 0
0 to 0.010
Titanium (Ti), % 0 to 0.2
0 to 0.050
Vanadium (V), % 0
0 to 0.12
Zinc (Zn), % 0 to 0.2
0
Zirconium (Zr), % 0
0 to 0.15
Residuals, % 0 to 0.15
0