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G-CoCr28 Cobalt vs. EN 1.4962 Stainless Steel

G-CoCr28 cobalt belongs to the cobalt alloys classification, while EN 1.4962 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 EN 1.4962 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 6.7
22 to 34
Fatigue Strength, MPa 130
210 to 330
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 83
77
Tensile Strength: Ultimate (UTS), MPa 560
630 to 690
Tensile Strength: Yield (Proof), MPa 260
260 to 490

Thermal Properties

Latent Heat of Fusion, J/g 320
280
Maximum Temperature: Mechanical, °C 1200
910
Melting Completion (Liquidus), °C 1330
1480
Melting Onset (Solidus), °C 1270
1440
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 8.5
14
Thermal Expansion, µm/m-K 14
16

Otherwise Unclassified Properties

Base Metal Price, % relative 100
23
Density, g/cm3 8.1
8.1
Embodied Carbon, kg CO2/kg material 6.2
4.1
Embodied Energy, MJ/kg 84
59
Embodied Water, L/kg 440
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 31
140 to 170
Resilience: Unit (Modulus of Resilience), kJ/m3 160
170 to 610
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 19
21 to 24
Strength to Weight: Bending, points 19
20 to 21
Thermal Diffusivity, mm2/s 2.2
3.7
Thermal Shock Resistance, points 14
14 to 16

Alloy Composition

Boron (B), % 0
0.0015 to 0.0060
Carbon (C), % 0.050 to 0.25
0.070 to 0.15
Chromium (Cr), % 27 to 30
15.5 to 17.5
Cobalt (Co), % 48 to 52
0
Iron (Fe), % 9.7 to 24.5
62.1 to 69
Manganese (Mn), % 0 to 1.5
0 to 1.5
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 0 to 4.0
12.5 to 14.5
Niobium (Nb), % 0 to 0.5
0
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 0.5 to 1.5
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.015
Titanium (Ti), % 0
0.4 to 0.7
Tungsten (W), % 0
2.5 to 3.0