MakeItFrom.com
Menu (ESC)

Annealed R30003 Cobalt vs. Annealed S17700 Stainless Steel

Annealed R30003 cobalt belongs to the cobalt alloys classification, while annealed S17700 stainless steel belongs to the iron alloys. They have 40% of their average alloy composition in common. There are 27 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 annealed R30003 cobalt and the bottom bar is annealed S17700 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 73
23
Fatigue Strength, MPa 320
290
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 83
76
Tensile Strength: Ultimate (UTS), MPa 970
1180
Tensile Strength: Yield (Proof), MPa 510
430

Thermal Properties

Latent Heat of Fusion, J/g 310
290
Melting Completion (Liquidus), °C 1400
1440
Melting Onset (Solidus), °C 1440
1400
Specific Heat Capacity, J/kg-K 450
480
Thermal Conductivity, W/m-K 13
15
Thermal Expansion, µm/m-K 13
11

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
7.7
Embodied Carbon, kg CO2/kg material 8.0
2.8
Embodied Energy, MJ/kg 110
40
Embodied Water, L/kg 400
150

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 600
460
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 32
42
Strength to Weight: Bending, points 26
32
Thermal Diffusivity, mm2/s 3.3
4.1
Thermal Shock Resistance, points 26
39

Alloy Composition

Aluminum (Al), % 0
0.75 to 1.5
Boron (B), % 0 to 0.1
0
Carbon (C), % 0 to 0.15
0 to 0.090
Chromium (Cr), % 19 to 21
16 to 18
Cobalt (Co), % 39 to 41
0
Iron (Fe), % 10 to 20.5
70.5 to 76.8
Manganese (Mn), % 1.5 to 2.5
0 to 1.0
Molybdenum (Mo), % 6.0 to 8.0
0
Nickel (Ni), % 14 to 16
6.5 to 7.8
Phosphorus (P), % 0 to 0.015
0 to 0.040
Silicon (Si), % 0 to 1.2
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.030