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G-CoCr28 Cobalt vs. AISI 301L Stainless Steel

G-CoCr28 cobalt belongs to the cobalt alloys classification, while AISI 301L stainless steel belongs to the iron alloys. They have a modest 37% of their average alloy composition in common, which, by itself, doesn't mean much. 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 G-CoCr28 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, % 6.7
22 to 50
Fatigue Strength, MPa 130
240 to 530
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 83
77
Tensile Strength: Ultimate (UTS), MPa 560
620 to 1040
Tensile Strength: Yield (Proof), MPa 260
250 to 790

Thermal Properties

Latent Heat of Fusion, J/g 320
280
Maximum Temperature: Mechanical, °C 1200
890
Melting Completion (Liquidus), °C 1330
1430
Melting Onset (Solidus), °C 1270
1390
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 8.5
15
Thermal Expansion, µm/m-K 14
16

Otherwise Unclassified Properties

Base Metal Price, % relative 100
13
Density, g/cm3 8.1
7.8
Embodied Carbon, kg CO2/kg material 6.2
2.7
Embodied Energy, MJ/kg 84
39
Embodied Water, L/kg 440
130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 31
210 to 300
Resilience: Unit (Modulus of Resilience), kJ/m3 160
160 to 1580
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 19
22 to 37
Strength to Weight: Bending, points 19
21 to 29
Thermal Diffusivity, mm2/s 2.2
4.1
Thermal Shock Resistance, points 14
14 to 24

Alloy Composition

Carbon (C), % 0.050 to 0.25
0 to 0.030
Chromium (Cr), % 27 to 30
16 to 18
Cobalt (Co), % 48 to 52
0
Iron (Fe), % 9.7 to 24.5
70.7 to 78
Manganese (Mn), % 0 to 1.5
0 to 2.0
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 0 to 4.0
6.0 to 8.0
Niobium (Nb), % 0 to 0.5
0
Nitrogen (N), % 0
0 to 0.2
Phosphorus (P), % 0 to 0.040
0 to 0.045
Silicon (Si), % 0.5 to 1.5
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030