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R30155 Cobalt vs. AISI 410 Stainless Steel

Both R30155 cobalt and AISI 410 stainless steel are iron alloys. They have 44% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is R30155 cobalt and the bottom bar is AISI 410 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 220
190 to 240
Elastic (Young's, Tensile) Modulus, GPa 210
190
Elongation at Break, % 34
16 to 22
Fatigue Strength, MPa 310
190 to 350
Poisson's Ratio 0.29
0.28
Reduction in Area, % 34
47 to 48
Shear Modulus, GPa 81
76
Shear Strength, MPa 570
330 to 470
Tensile Strength: Ultimate (UTS), MPa 850
520 to 770
Tensile Strength: Yield (Proof), MPa 390
290 to 580

Thermal Properties

Latent Heat of Fusion, J/g 300
270
Maximum Temperature: Corrosion, °C 570
390
Maximum Temperature: Mechanical, °C 1100
710
Melting Completion (Liquidus), °C 1470
1530
Melting Onset (Solidus), °C 1420
1480
Specific Heat Capacity, J/kg-K 450
480
Thermal Conductivity, W/m-K 12
30
Thermal Expansion, µm/m-K 14
11

Otherwise Unclassified Properties

Base Metal Price, % relative 80
7.0
Density, g/cm3 8.5
7.7
Embodied Carbon, kg CO2/kg material 9.7
1.9
Embodied Energy, MJ/kg 150
27
Embodied Water, L/kg 300
100

Common Calculations

PREN (Pitting Resistance) 37
13
Resilience: Ultimate (Unit Rupture Work), MJ/m3 230
97 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 370
210 to 860
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 28
19 to 28
Strength to Weight: Bending, points 24
19 to 24
Thermal Diffusivity, mm2/s 3.2
8.1
Thermal Shock Resistance, points 21
18 to 26

Alloy Composition

Carbon (C), % 0.080 to 0.16
0.080 to 0.15
Chromium (Cr), % 20 to 22.5
11.5 to 13.5
Cobalt (Co), % 18.5 to 21
0
Iron (Fe), % 24.3 to 36.2
83.5 to 88.4
Manganese (Mn), % 1.0 to 2.0
0 to 1.0
Molybdenum (Mo), % 2.5 to 3.5
0
Nickel (Ni), % 19 to 21
0 to 0.75
Niobium (Nb), % 0.75 to 1.3
0
Nitrogen (N), % 0 to 0.2
0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030
Tantalum (Ta), % 0.75 to 1.3
0
Tungsten (W), % 2.0 to 3.0
0