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EN 1.4874 Stainless Steel vs. EN 2.4964 Cobalt

EN 1.4874 stainless steel belongs to the iron alloys classification, while EN 2.4964 cobalt belongs to the cobalt alloys. They have 56% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is EN 1.4874 stainless steel and the bottom bar is EN 2.4964 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
220
Elongation at Break, % 6.7
40
Fatigue Strength, MPa 180
220
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 80
86
Tensile Strength: Ultimate (UTS), MPa 480
960
Tensile Strength: Yield (Proof), MPa 360
390

Thermal Properties

Latent Heat of Fusion, J/g 300
290
Melting Completion (Liquidus), °C 1450
1630
Melting Onset (Solidus), °C 1400
1550
Specific Heat Capacity, J/kg-K 450
400
Thermal Conductivity, W/m-K 13
15
Thermal Expansion, µm/m-K 15
12

Otherwise Unclassified Properties

Density, g/cm3 8.4
9.6
Embodied Carbon, kg CO2/kg material 7.6
9.8
Embodied Energy, MJ/kg 110
140
Embodied Water, L/kg 290
450

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 29
310
Resilience: Unit (Modulus of Resilience), kJ/m3 310
340
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
21
Strength to Weight: Axial, points 16
28
Strength to Weight: Bending, points 16
23
Thermal Diffusivity, mm2/s 3.3
3.9
Thermal Shock Resistance, points 11
25

Alloy Composition

Carbon (C), % 0.35 to 0.65
0.050 to 0.15
Chromium (Cr), % 19 to 22
19 to 21
Cobalt (Co), % 18.5 to 22
46.4 to 58
Iron (Fe), % 23 to 38.9
0 to 3.0
Manganese (Mn), % 0 to 2.0
0 to 2.0
Molybdenum (Mo), % 2.5 to 3.0
0
Nickel (Ni), % 18 to 22
9.0 to 11
Niobium (Nb), % 0.75 to 1.3
0
Phosphorus (P), % 0 to 0.040
0 to 0.020
Silicon (Si), % 0 to 1.0
0 to 0.4
Sulfur (S), % 0 to 0.030
0 to 0.015
Tungsten (W), % 2.0 to 3.0
14 to 16