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EN 1.1221 Steel vs. 1200 Aluminum

EN 1.1221 steel belongs to the iron alloys classification, while 1200 aluminum belongs to the aluminum 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 EN 1.1221 steel and the bottom bar is 1200 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210 to 250
23 to 48
Elastic (Young's, Tensile) Modulus, GPa 190
69
Elongation at Break, % 10 to 21
1.1 to 28
Fatigue Strength, MPa 240 to 340
25 to 69
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 72
26
Shear Strength, MPa 450 to 520
54 to 100
Tensile Strength: Ultimate (UTS), MPa 730 to 870
85 to 180
Tensile Strength: Yield (Proof), MPa 390 to 550
28 to 160

Thermal Properties

Latent Heat of Fusion, J/g 250
400
Maximum Temperature: Mechanical, °C 400
170
Melting Completion (Liquidus), °C 1460
660
Melting Onset (Solidus), °C 1410
650
Specific Heat Capacity, J/kg-K 470
900
Thermal Conductivity, W/m-K 48
230
Thermal Expansion, µm/m-K 12
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
58
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
190

Otherwise Unclassified Properties

Base Metal Price, % relative 2.1
9.0
Density, g/cm3 7.8
2.7
Embodied Carbon, kg CO2/kg material 1.5
8.2
Embodied Energy, MJ/kg 19
150
Embodied Water, L/kg 47
1190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 67 to 130
2.0 to 19
Resilience: Unit (Modulus of Resilience), kJ/m3 410 to 800
5.7 to 180
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
50
Strength to Weight: Axial, points 26 to 31
8.7 to 19
Strength to Weight: Bending, points 23 to 26
16 to 26
Thermal Diffusivity, mm2/s 13
92
Thermal Shock Resistance, points 23 to 28
3.8 to 8.1

Alloy Composition

Aluminum (Al), % 0
99 to 100
Carbon (C), % 0.57 to 0.65
0
Chromium (Cr), % 0 to 0.4
0
Copper (Cu), % 0
0 to 0.050
Iron (Fe), % 97.1 to 98.8
0 to 1.0
Manganese (Mn), % 0.6 to 0.9
0 to 0.050
Molybdenum (Mo), % 0 to 0.1
0
Nickel (Ni), % 0 to 0.4
0
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 0 to 0.4
0 to 1.0
Sulfur (S), % 0 to 0.035
0
Titanium (Ti), % 0
0 to 0.050
Zinc (Zn), % 0
0 to 0.1
Residuals, % 0
0 to 0.15

Comparable Variants