EN 2.4964 (CoCr20W15Ni) Cobalt Alloy
Cobalt Alloys
Property Overview
Density9.6g/cm³
Elastic Modulus220GPa
Tensile Strength860MPa
Yield Strength340MPa
Brinell HardnessUnknown
Maximum Service TemperatureUnknown
Chemical Composition
C
0.050 to 0.15%
CR
19 to 21%
NI
9.0 to 11%
MN
0 to 2.0%
SI
0 to 0.4%
P
0 to 0.020%
S
0 to 0.015%
CO
46.4 to 58%
W
14 to 16%
FE
0 to 3.0%
Mechanical
A - Min. elongation at fracture (%) (+AT)
35
+AT
Elastic (Young's, Tensile) Modulus
220 GPa
Elongation at Break
40 %
Fatigue Strength
220 MPa
Poisson's Ratio
0.29
R p0.2 0.2% proof strength (MPa) (+AT)
340
+AT
Rm - Tensile strength (MPa) (+AT)
860
+AT
Shear Modulus
86 GPa
Tensile Strength: Ultimate (UTS)
960 MPa
Tensile Strength: Yield (Proof)
390 MPa
Hardness
+A Soft annealed +AC Annealed to achieve spheroidization of the carbides +AR As rolled +AT Solution annealed +C Cold drawn / hard +CR Cold rolled +FP Treated to ferrite-pearlite structure and hardness range +I Isothermal annealing +LC Cold drawn / soft +M Thermo mechanical rolling +N Normalized +NT Normalized and tempered
+P Precipitation hardened +PE Peeled +QA Air quenched and tempered +QL Liquid quenched and tempered +QT Quenched and tempered +S Treated to improve shearability +SH As rolled and turned +SR Cold drawn and stress relieved +T Tempered +TH Treated to hardness range +WW Warm worked +U Untreated
+A
Physical
Density
9.6 g/cm 3
Thermal
Latent Heat of Fusion
290 J/g
Melting Completion (Liquidus)
1630 °C
Melting Onset (Solidus)
1550 °C
Specific Heat Capacity
400 J/kg-K
Thermal Conductivity
15 W/m-K
Thermal Diffusivity
3.9 mm 2 /s
Thermal Expansion
12 µm/m-K
Thermal Shock Resistance
25 points
Electrical
Electrical Conductivity: Equal Volume
1.9 % IACS
Electrical Conductivity: Equal Weight (Specific)
1.8 % IACS
Calculated
Resilience: Ultimate (Unit Rupture Work)
310 MJ/m 3
Resilience: Unit (Modulus of Resilience)
340 kJ/m 3
Stiffness to Weight: Axial
13 points
Stiffness to Weight: Bending
21 points
Strength to Weight: Axial
28 points
Strength to Weight: Bending
23 points
Environmental
Embodied Carbon
9.8 kg CO 2 /kg material
Embodied Energy
140 MJ/kg
Embodied Energy
140 MJ/kg 60 x 10 3 BTU/lb
Embodied Water
450 L/kg
Embodied Water
450 L/kg 54 gal/lb
Registered Designations & Aliases
2.49642.4964CoCr20W15NiCoCr20W15NiEN 2.4964 (CoCr20W15Ni) Cobalt Alloy
Standards
EN 10302 EN 10302: 2008 Creep resisting steels, nickel and cobalt alloys
EN 10302 EN 10302: Creep resisting steels, nickel and cobalt alloys