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5254-O Aluminum vs. EN 1.1221 +A Steel

5254-O aluminum belongs to the aluminum alloys classification, while EN 1.1221 +A steel belongs to the iron alloys. 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 5254-O aluminum and the bottom bar is EN 1.1221 +A steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 58
210
Elastic (Young's, Tensile) Modulus, GPa 68
190
Elongation at Break, % 22
21
Fatigue Strength, MPa 120
280
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
72
Shear Strength, MPa 150
460
Tensile Strength: Ultimate (UTS), MPa 240
730
Tensile Strength: Yield (Proof), MPa 100
410

Thermal Properties

Latent Heat of Fusion, J/g 400
250
Maximum Temperature: Mechanical, °C 190
400
Melting Completion (Liquidus), °C 640
1460
Melting Onset (Solidus), °C 590
1410
Specific Heat Capacity, J/kg-K 900
470
Thermal Conductivity, W/m-K 130
48
Thermal Expansion, µm/m-K 24
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 32
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 110
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
2.1
Density, g/cm3 2.7
7.8
Embodied Carbon, kg CO2/kg material 8.8
1.5
Embodied Energy, MJ/kg 150
19
Embodied Water, L/kg 1180
47

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 41
130
Resilience: Unit (Modulus of Resilience), kJ/m3 73
440
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 51
24
Strength to Weight: Axial, points 25
26
Strength to Weight: Bending, points 32
23
Thermal Diffusivity, mm2/s 52
13
Thermal Shock Resistance, points 10
23

Alloy Composition

Aluminum (Al), % 94.4 to 96.8
0
Carbon (C), % 0
0.57 to 0.65
Chromium (Cr), % 0.15 to 0.35
0 to 0.4
Copper (Cu), % 0 to 0.050
0
Iron (Fe), % 0 to 0.45
97.1 to 98.8
Magnesium (Mg), % 3.1 to 3.9
0
Manganese (Mn), % 0 to 0.010
0.6 to 0.9
Molybdenum (Mo), % 0
0 to 0.1
Nickel (Ni), % 0
0 to 0.4
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 0 to 0.45
0 to 0.4
Sulfur (S), % 0
0 to 0.035
Titanium (Ti), % 0 to 0.050
0
Zinc (Zn), % 0 to 0.2
0
Residuals, % 0 to 0.15
0