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R30003 Cobalt vs. AISI 301L Stainless Steel

R30003 cobalt belongs to the cobalt alloys classification, while AISI 301L stainless steel belongs to the iron alloys. They have 41% of their average alloy composition in common. There are 27 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is R30003 cobalt and the bottom bar is AISI 301L stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 10 to 73
22 to 50
Fatigue Strength, MPa 320 to 560
240 to 530
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 83
77
Tensile Strength: Ultimate (UTS), MPa 970 to 1720
620 to 1040
Tensile Strength: Yield (Proof), MPa 510 to 1090
250 to 790

Thermal Properties

Latent Heat of Fusion, J/g 310
280
Melting Completion (Liquidus), °C 1400
1430
Melting Onset (Solidus), °C 1440
1390
Specific Heat Capacity, J/kg-K 450
480
Thermal Conductivity, W/m-K 13
15
Thermal Expansion, µm/m-K 13
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 95
13
Density, g/cm3 8.4
7.8
Embodied Carbon, kg CO2/kg material 8.0
2.7
Embodied Energy, MJ/kg 110
39
Embodied Water, L/kg 400
130

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 600 to 2790
160 to 1580
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 32 to 57
22 to 37
Strength to Weight: Bending, points 26 to 38
21 to 29
Thermal Diffusivity, mm2/s 3.3
4.1
Thermal Shock Resistance, points 26 to 45
14 to 24

Alloy Composition

Boron (B), % 0 to 0.1
0
Carbon (C), % 0 to 0.15
0 to 0.030
Chromium (Cr), % 19 to 21
16 to 18
Cobalt (Co), % 39 to 41
0
Iron (Fe), % 10 to 20.5
70.7 to 78
Manganese (Mn), % 1.5 to 2.5
0 to 2.0
Molybdenum (Mo), % 6.0 to 8.0
0
Nickel (Ni), % 14 to 16
6.0 to 8.0
Nitrogen (N), % 0
0 to 0.2
Phosphorus (P), % 0 to 0.015
0 to 0.045
Silicon (Si), % 0 to 1.2
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.030

Comparable Variants