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Tungsten Carbide (WC) K20 Co Binder Alloy Balls
  • Tungsten Carbide (WC) K20 Co Binder Alloy Balls

Tungsten Carbide (WC) K20 Co Binder Alloy Balls

TUNGSTEN CARBIDE (WC) K20 Co BINDER ALLOY BALLSK20 WC balls are used in applications where extreme hardness and resistance to

TUNGSTEN CARBIDE (WC) K20 Co BINDER ALLOY BALLS


K20 WC balls are used in applications where extreme hardness and resistance to wear, abrasion, collision and deformation are required. Virgin powder is strictly used into this production.

 

Applications

Special and hydraulic precision valves, special bearings, couplers, flow meters, sprayers, recirculating balls, ball splines, tool machines, sliding rails, ballpoint pens, pin and tips for indicators, precision measurement instruments, medical instruments. They are used in naval, mining, petrol and coining industry.

 

Chemical Composition (%)

Type

WC

Co

WC20

93.00-95.00

5.00-7.00

 

International Standards

Type

ISO

USA

CHN

WC20

K20

C1

YG6

 

Physical / Mechanical / Thermal / Electric / Magnetic Properties

Property

Symbol

U.o.M.

Type

Notes

Values

Density

δ

g/cm3

Physical

Room temp.

14.95

Young's modulus

E

GPa

Mechanical

-

650

Specific heat

c

J/(kg·℃)

Thermal

Room temp.

225

Coefficient of linear thermal expansion

α

10-6/ºC

Thermal

(ΔT=0-100°C)

5.2

Thermal conductivity

λ

W/(m·K)

Thermal

Room temp.

83.0

Electric resistivity

ρ

Ω*m*10-9

Electric

-

180

Relative magnetic permeability

µ

-

Magnetic

Slighlty ferrom.

max 12

 

Technical Data

Property

Type

U.o.M.

Values

U.o.M.

Values

Grain size

Physical

µm

~1.2

-

-

Hardness

Mechanical

HRA

90.0-91.5

HV

1550-1780

Ultimate compressive strength

Mechanical

MPa

4600-5800

psi*103

797-841

Service temperature

Thermal

ºC

-196/ 500

ºF

-320.8/932


Range

Diameters

U.o.M.

Diameters

U.o.M.

Precision Grade (ISO 3290)

2.381- 127.000

mm

3/32 - 5

inch

G10 -......- G1000


Corrosion Resistance

As a general rule Tungsten Carbides with Cobalt binder show good corrosion resistance into basic solution while they are not resisting into acid solutions.