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EN 1.7231 Steel vs. Class 2 Tungsten

EN 1.7231 steel belongs to the iron alloys classification, while class 2 tungsten belongs to the otherwise unclassified metals. There are 24 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is EN 1.7231 steel and the bottom bar is class 2 tungsten.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
260
Elongation at Break, % 11 to 12
5.7
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
100
Tensile Strength: Ultimate (UTS), MPa 790 to 930
860
Tensile Strength: Yield (Proof), MPa 570 to 800
580

Thermal Properties

Latent Heat of Fusion, J/g 250
160
Specific Heat Capacity, J/kg-K 470
120
Thermal Conductivity, W/m-K 46
20
Thermal Expansion, µm/m-K 13
4.6

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
13
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4
7.8

Otherwise Unclassified Properties

Density, g/cm3 7.8
15
Embodied Carbon, kg CO2/kg material 1.5
23
Embodied Energy, MJ/kg 20
350
Embodied Water, L/kg 51
140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 87 to 100
44
Resilience: Unit (Modulus of Resilience), kJ/m3 870 to 1700
640
Stiffness to Weight: Axial, points 13
9.6
Stiffness to Weight: Bending, points 24
14
Strength to Weight: Axial, points 28 to 33
16
Strength to Weight: Bending, points 24 to 27
13
Thermal Diffusivity, mm2/s 12
11
Thermal Shock Resistance, points 23 to 27
52

Alloy Composition


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Carbon (C), % 0.38 to 0.45
0
Chromium (Cr), % 0.8 to 1.2
0
Iron (Fe), % 96.4 to 98.1
0
Manganese (Mn), % 0.6 to 1.0
0
Molybdenum (Mo), % 0.15 to 0.3
0
Phosphorus (P), % 0 to 0.025
0
Silicon (Si), % 0 to 0.6
0
Sulfur (S), % 0 to 0.030
0
Tungsten (W), % 0
92.5
Residuals, % 0
7.5