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EN 1.4122 Stainless Steel vs. Class 4 Tungsten

EN 1.4122 stainless steel belongs to the iron alloys classification, while class 4 tungsten belongs to the otherwise unclassified metals. There are 24 material properties with values for both materials. Properties with values for just one material (9, 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 1.4122 stainless steel and the bottom bar is class 4 tungsten.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
270
Elongation at Break, % 14
2.3
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
110
Tensile Strength: Ultimate (UTS), MPa 790 to 850
790
Tensile Strength: Yield (Proof), MPa 450 to 630
580

Thermal Properties

Latent Heat of Fusion, J/g 280
170
Specific Heat Capacity, J/kg-K 480
130
Thermal Conductivity, W/m-K 15
30
Thermal Expansion, µm/m-K 10
4.5

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
17
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
9.7

Otherwise Unclassified Properties

Density, g/cm3 7.7
16
Embodied Carbon, kg CO2/kg material 2.4
24
Embodied Energy, MJ/kg 33
360
Embodied Water, L/kg 120
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 93 to 110
16
Resilience: Unit (Modulus of Resilience), kJ/m3 520 to 1000
620
Stiffness to Weight: Axial, points 14
9.6
Stiffness to Weight: Bending, points 25
14
Strength to Weight: Axial, points 28 to 31
14
Strength to Weight: Bending, points 25 to 26
12
Thermal Diffusivity, mm2/s 4.0
15
Thermal Shock Resistance, points 28 to 30
46

Alloy Composition

Carbon (C), % 0.33 to 0.45
0
Chromium (Cr), % 15.5 to 17.5
0
Iron (Fe), % 77.2 to 83.4
0
Manganese (Mn), % 0 to 1.5
0
Molybdenum (Mo), % 0.8 to 1.3
0
Nickel (Ni), % 0 to 1.0
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.015
0
Tungsten (W), % 0
97
Residuals, % 0
3.0