Alloy

Colmonoy 730

Alloy Type

Nickel with Tungsten Carbide

Nominal Composition (%)

C 2.40
Si 2.40
Cr 8.40
Fe 2.50

B 1.80
Co 2.30
W 39.20
Ni Balance

 

Rockwell Hardness
(C-scale)

58-63

Density (gm/cc)

12.36

Fusing Temperature (approx.)

1940°F
1060°C

Resistance:

to
Abrasion

to

Corrosion

to
Impact

to
Galling

 

1

2

4

1

Supplied Forms

Composite Powder

Method of application

Spraywelder

Description and General Uses

 

A tough nickel-chromium-tungsten matrix alloy holds extremely hard tungsten-carbide particles.  Finer mesh tungsten carbide than Colmonoy 750. Used on pump plungers and sleeves for protection from fine-particulate abrasive conditions. Minimizes packing wear. Finished by grinding.