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R30155 Cobalt vs. EN 1.4565 Stainless Steel

Both R30155 cobalt and EN 1.4565 stainless steel are iron alloys. They have 74% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is R30155 cobalt and the bottom bar is EN 1.4565 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
210
Elongation at Break, % 34
35
Fatigue Strength, MPa 310
380
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 81
81
Shear Strength, MPa 570
590
Tensile Strength: Ultimate (UTS), MPa 850
880
Tensile Strength: Yield (Proof), MPa 390
480

Thermal Properties

Latent Heat of Fusion, J/g 300
310
Maximum Temperature: Corrosion, °C 570
460
Maximum Temperature: Mechanical, °C 1100
1100
Melting Completion (Liquidus), °C 1470
1420
Melting Onset (Solidus), °C 1420
1380
Specific Heat Capacity, J/kg-K 450
470
Thermal Conductivity, W/m-K 12
12
Thermal Expansion, µm/m-K 14
15

Otherwise Unclassified Properties

Base Metal Price, % relative 80
28
Density, g/cm3 8.5
7.9
Embodied Carbon, kg CO2/kg material 9.7
5.4
Embodied Energy, MJ/kg 150
74
Embodied Water, L/kg 300
210

Common Calculations

PREN (Pitting Resistance) 37
47
Resilience: Ultimate (Unit Rupture Work), MJ/m3 230
260
Resilience: Unit (Modulus of Resilience), kJ/m3 370
550
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 28
31
Strength to Weight: Bending, points 24
26
Thermal Diffusivity, mm2/s 3.2
3.2
Thermal Shock Resistance, points 21
21

Alloy Composition

Carbon (C), % 0.080 to 0.16
0 to 0.030
Chromium (Cr), % 20 to 22.5
24 to 26
Cobalt (Co), % 18.5 to 21
0
Iron (Fe), % 24.3 to 36.2
41.2 to 50.7
Manganese (Mn), % 1.0 to 2.0
5.0 to 7.0
Molybdenum (Mo), % 2.5 to 3.5
4.0 to 5.0
Nickel (Ni), % 19 to 21
16 to 19
Niobium (Nb), % 0.75 to 1.3
0 to 0.15
Nitrogen (N), % 0 to 0.2
0.3 to 0.6
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.015
Tantalum (Ta), % 0.75 to 1.3
0
Tungsten (W), % 2.0 to 3.0
0