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6261-O Aluminum vs. EN 1.8151 +A Steel

6261-O aluminum belongs to the aluminum alloys classification, while EN 1.8151 +A steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (1, 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 6261-O aluminum and the bottom bar is EN 1.8151 +A steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
190
Elongation at Break, % 16
20
Fatigue Strength, MPa 110
300
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
72
Shear Strength, MPa 92
440
Tensile Strength: Ultimate (UTS), MPa 150
710
Tensile Strength: Yield (Proof), MPa 100
440

Thermal Properties

Latent Heat of Fusion, J/g 400
270
Maximum Temperature: Mechanical, °C 160
410
Melting Completion (Liquidus), °C 640
1440
Melting Onset (Solidus), °C 610
1400
Specific Heat Capacity, J/kg-K 900
480
Thermal Conductivity, W/m-K 180
50
Thermal Expansion, µm/m-K 23
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 48
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 160
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
2.2
Density, g/cm3 2.7
7.7
Embodied Carbon, kg CO2/kg material 8.3
1.8
Embodied Energy, MJ/kg 150
25
Embodied Water, L/kg 1180
49

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 21
120
Resilience: Unit (Modulus of Resilience), kJ/m3 77
520
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
25
Strength to Weight: Axial, points 15
25
Strength to Weight: Bending, points 23
23
Thermal Diffusivity, mm2/s 75
14
Thermal Shock Resistance, points 6.7
21

Alloy Composition


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Aluminum (Al), % 96.6 to 98.6
0
Carbon (C), % 0
0.4 to 0.5
Chromium (Cr), % 0 to 0.1
0.4 to 0.8
Copper (Cu), % 0.15 to 0.4
0
Iron (Fe), % 0 to 0.4
95.9 to 97.2
Magnesium (Mg), % 0.7 to 1.0
0
Manganese (Mn), % 0.2 to 0.35
0.6 to 0.9
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0.4 to 0.7
1.3 to 1.7
Sulfur (S), % 0
0 to 0.025
Titanium (Ti), % 0 to 0.1
0
Vanadium (V), % 0
0.1 to 0.2
Zinc (Zn), % 0 to 0.2
0
Residuals, % 0 to 0.15
0