MakeItFrom.com
Menu (ESC)

S20910 Stainless Steel vs. R30001 Cobalt

S20910 stainless steel belongs to the iron alloys classification, while R30001 cobalt belongs to the cobalt alloys. They have a modest 26% of their average alloy composition in common, which, by itself, doesn't mean much. There are 21 material properties with values for both materials. Properties with values for just one material (15, in this case) are not shown.

For each property being compared, the top bar is S20910 stainless steel and the bottom bar is R30001 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
220
Elongation at Break, % 14 to 39
1.0
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 79
86
Tensile Strength: Ultimate (UTS), MPa 780 to 940
620

Thermal Properties

Latent Heat of Fusion, J/g 300
310
Melting Completion (Liquidus), °C 1420
1530
Melting Onset (Solidus), °C 1380
1260
Specific Heat Capacity, J/kg-K 480
430
Thermal Conductivity, W/m-K 13
15
Thermal Expansion, µm/m-K 16
11

Otherwise Unclassified Properties

Density, g/cm3 7.8
9.0
Embodied Carbon, kg CO2/kg material 4.8
8.9
Embodied Energy, MJ/kg 68
130
Embodied Water, L/kg 180
460

Common Calculations

Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
22
Strength to Weight: Axial, points 28 to 33
19
Strength to Weight: Bending, points 24 to 27
18
Thermal Diffusivity, mm2/s 3.6
3.7
Thermal Shock Resistance, points 17 to 21
19

Alloy Composition

Carbon (C), % 0 to 0.060
2.0 to 3.0
Chromium (Cr), % 20.5 to 23.5
28 to 32
Cobalt (Co), % 0
43 to 59
Iron (Fe), % 52.1 to 62.1
0 to 3.0
Manganese (Mn), % 4.0 to 6.0
0
Molybdenum (Mo), % 1.5 to 3.0
0 to 1.0
Nickel (Ni), % 11.5 to 13.5
0 to 3.0
Niobium (Nb), % 0.1 to 0.3
0
Nitrogen (N), % 0.2 to 0.4
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 0.75
0 to 2.0
Sulfur (S), % 0 to 0.030
0
Tungsten (W), % 0
11 to 13
Vanadium (V), % 0.1 to 0.3
0