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6151 Aluminum vs. EN 1.7228 Steel

6151 aluminum belongs to the aluminum alloys classification, while EN 1.7228 steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (2, 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 6151 aluminum and the bottom bar is EN 1.7228 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
190
Elongation at Break, % 1.1 to 5.7
12
Fatigue Strength, MPa 80 to 100
390
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
73
Shear Strength, MPa 190 to 200
540
Tensile Strength: Ultimate (UTS), MPa 330 to 340
900
Tensile Strength: Yield (Proof), MPa 270 to 280
630

Thermal Properties

Latent Heat of Fusion, J/g 410
250
Maximum Temperature: Mechanical, °C 170
420
Melting Completion (Liquidus), °C 650
1460
Melting Onset (Solidus), °C 590
1420
Specific Heat Capacity, J/kg-K 900
470
Thermal Conductivity, W/m-K 170
46
Thermal Expansion, µm/m-K 23
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 45
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 150
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
2.5
Density, g/cm3 2.7
7.8
Embodied Carbon, kg CO2/kg material 8.2
1.5
Embodied Energy, MJ/kg 150
20
Embodied Water, L/kg 1180
51

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 3.5 to 18
100
Resilience: Unit (Modulus of Resilience), kJ/m3 520 to 580
1050
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
24
Strength to Weight: Axial, points 34
32
Strength to Weight: Bending, points 39
26
Thermal Diffusivity, mm2/s 70
12
Thermal Shock Resistance, points 15
26

Alloy Composition

Aluminum (Al), % 95.6 to 98.8
0
Carbon (C), % 0
0.46 to 0.54
Chromium (Cr), % 0.15 to 0.35
0.9 to 1.2
Copper (Cu), % 0 to 0.35
0
Iron (Fe), % 0 to 1.0
96.7 to 98
Magnesium (Mg), % 0.45 to 0.8
0
Manganese (Mn), % 0 to 0.2
0.5 to 0.8
Molybdenum (Mo), % 0
0.15 to 0.3
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 0.6 to 1.2
0 to 0.4
Sulfur (S), % 0
0 to 0.035
Titanium (Ti), % 0 to 0.15
0
Zinc (Zn), % 0 to 0.25
0
Residuals, % 0 to 0.15
0