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EN 1.7703 Steel vs. 333.0 Aluminum

EN 1.7703 steel belongs to the iron alloys classification, while 333.0 aluminum belongs to the aluminum alloys. There are 31 material properties with values for both materials. Properties with values for just one material (2, 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 EN 1.7703 steel and the bottom bar is 333.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200 to 210
90 to 110
Elastic (Young's, Tensile) Modulus, GPa 190
73
Elongation at Break, % 20
1.0 to 2.0
Fatigue Strength, MPa 320 to 340
83 to 100
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 74
28
Shear Strength, MPa 420 to 430
190 to 230
Tensile Strength: Ultimate (UTS), MPa 670 to 690
230 to 280
Tensile Strength: Yield (Proof), MPa 460 to 500
130 to 210

Thermal Properties

Latent Heat of Fusion, J/g 250
520
Maximum Temperature: Mechanical, °C 460
170
Melting Completion (Liquidus), °C 1470
590
Melting Onset (Solidus), °C 1430
530
Specific Heat Capacity, J/kg-K 470
880
Thermal Conductivity, W/m-K 39
100 to 140
Thermal Expansion, µm/m-K 13
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.6
26 to 35
Electrical Conductivity: Equal Weight (Specific), % IACS 8.7
83 to 110

Otherwise Unclassified Properties

Base Metal Price, % relative 4.2
10
Density, g/cm3 7.9
2.8
Embodied Carbon, kg CO2/kg material 2.5
7.6
Embodied Energy, MJ/kg 35
140
Embodied Water, L/kg 61
1040

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120 to 130
2.1 to 4.6
Resilience: Unit (Modulus of Resilience), kJ/m3 570 to 650
120 to 290
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
49
Strength to Weight: Axial, points 24
22 to 27
Strength to Weight: Bending, points 22
29 to 34
Thermal Diffusivity, mm2/s 11
42 to 57
Thermal Shock Resistance, points 19 to 20
11 to 13

Alloy Composition

Aluminum (Al), % 0
81.8 to 89
Carbon (C), % 0.11 to 0.15
0
Chromium (Cr), % 2.0 to 2.5
0
Copper (Cu), % 0 to 0.2
3.0 to 4.0
Iron (Fe), % 94.6 to 96.4
0 to 1.0
Magnesium (Mg), % 0
0.050 to 0.5
Manganese (Mn), % 0.3 to 0.6
0 to 0.5
Molybdenum (Mo), % 0.9 to 1.1
0
Nickel (Ni), % 0 to 0.25
0 to 0.5
Niobium (Nb), % 0 to 0.070
0
Nitrogen (N), % 0 to 0.012
0
Phosphorus (P), % 0 to 0.015
0
Silicon (Si), % 0 to 0.1
8.0 to 10
Sulfur (S), % 0 to 0.0050
0
Titanium (Ti), % 0 to 0.030
0 to 0.25
Vanadium (V), % 0.25 to 0.35
0
Zinc (Zn), % 0
0 to 1.0
Residuals, % 0
0 to 0.5