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6351 Aluminum vs. EN 1.6554 Steel

6351 aluminum belongs to the aluminum alloys classification, while EN 1.6554 steel belongs to the iron alloys. There are 29 material properties with values for both materials. Properties with values for just one material (3, 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 6351 aluminum and the bottom bar is EN 1.6554 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
190
Elongation at Break, % 7.8 to 18
17 to 21
Fatigue Strength, MPa 79 to 130
380 to 520
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
73
Tensile Strength: Ultimate (UTS), MPa 140 to 310
780 to 930
Tensile Strength: Yield (Proof), MPa 95 to 270
550 to 790

Thermal Properties

Latent Heat of Fusion, J/g 410
250
Maximum Temperature: Mechanical, °C 160
420
Melting Completion (Liquidus), °C 650
1460
Melting Onset (Solidus), °C 570
1420
Specific Heat Capacity, J/kg-K 900
470
Thermal Conductivity, W/m-K 180
40
Thermal Expansion, µm/m-K 23
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 46
7.6
Electrical Conductivity: Equal Weight (Specific), % IACS 150
8.7

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
3.4
Density, g/cm3 2.7
7.9
Embodied Carbon, kg CO2/kg material 8.3
1.7
Embodied Energy, MJ/kg 150
22
Embodied Water, L/kg 1180
53

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 20 to 38
140 to 150
Resilience: Unit (Modulus of Resilience), kJ/m3 65 to 540
810 to 1650
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
24
Strength to Weight: Axial, points 14 to 32
27 to 33
Strength to Weight: Bending, points 22 to 38
24 to 27
Thermal Diffusivity, mm2/s 72
11
Thermal Shock Resistance, points 6.1 to 14
23 to 27

Alloy Composition

Aluminum (Al), % 96 to 98.5
0
Carbon (C), % 0
0.23 to 0.28
Chromium (Cr), % 0
0.7 to 0.9
Copper (Cu), % 0 to 0.1
0 to 0.3
Iron (Fe), % 0 to 0.5
94.6 to 97.3
Magnesium (Mg), % 0.4 to 0.8
0
Manganese (Mn), % 0.4 to 0.8
0.6 to 0.9
Molybdenum (Mo), % 0
0.2 to 0.3
Nickel (Ni), % 0
1.0 to 2.0
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0.7 to 1.3
0 to 0.6
Sulfur (S), % 0
0 to 0.025
Titanium (Ti), % 0 to 0.2
0
Vanadium (V), % 0
0 to 0.030
Zinc (Zn), % 0 to 0.2
0
Residuals, % 0 to 0.15
0

Comparable Variants