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EN 1.1221 Steel vs. 336.0 Aluminum

EN 1.1221 steel belongs to the iron alloys classification, while 336.0 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 336.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210 to 250
110 to 130
Elastic (Young's, Tensile) Modulus, GPa 190
75
Elongation at Break, % 10 to 21
0.5
Fatigue Strength, MPa 240 to 340
80 to 93
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 72
28
Shear Strength, MPa 450 to 520
190 to 250
Tensile Strength: Ultimate (UTS), MPa 730 to 870
250 to 320
Tensile Strength: Yield (Proof), MPa 390 to 550
190 to 300

Thermal Properties

Latent Heat of Fusion, J/g 250
570
Maximum Temperature: Mechanical, °C 400
210
Melting Completion (Liquidus), °C 1460
570
Melting Onset (Solidus), °C 1410
540
Specific Heat Capacity, J/kg-K 470
890
Thermal Conductivity, W/m-K 48
120
Thermal Expansion, µm/m-K 12
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
29
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
95

Otherwise Unclassified Properties

Base Metal Price, % relative 2.1
11
Density, g/cm3 7.8
2.8
Embodied Carbon, kg CO2/kg material 1.5
7.9
Embodied Energy, MJ/kg 19
140
Embodied Water, L/kg 47
1010

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 67 to 130
1.1 to 1.6
Resilience: Unit (Modulus of Resilience), kJ/m3 410 to 800
250 to 580
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 24
51
Strength to Weight: Axial, points 26 to 31
25 to 32
Strength to Weight: Bending, points 23 to 26
32 to 38
Thermal Diffusivity, mm2/s 13
48
Thermal Shock Resistance, points 23 to 28
12 to 16

Alloy Composition

Aluminum (Al), % 0
79.1 to 85.8
Carbon (C), % 0.57 to 0.65
0
Chromium (Cr), % 0 to 0.4
0
Copper (Cu), % 0
0.5 to 1.5
Iron (Fe), % 97.1 to 98.8
0 to 1.2
Magnesium (Mg), % 0
0.7 to 1.3
Manganese (Mn), % 0.6 to 0.9
0 to 0.35
Molybdenum (Mo), % 0 to 0.1
0
Nickel (Ni), % 0 to 0.4
2.0 to 3.0
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 0 to 0.4
11 to 13
Sulfur (S), % 0 to 0.035
0
Titanium (Ti), % 0
0 to 0.25
Zinc (Zn), % 0
0 to 0.35