Alloy

Colmonoy 75

Alloy Type

Nickel with Tungsten Carbide

Nominal Composition (%)

C 2.90
Si 2.40
Cr 7.50
Fe 2.50

 B 1.40
Co 6.20
W 41.40
Ni Balance

 

Rockwell Hardness
(C-scale)

58-63

Density (gm/cc)

11.25

Fusing Temperature (approx.)

1950°F
1065°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 nickel-chromium-boron matrix alloy holds extremely hard tungsten-carbide particles.  Used primarily for protection from severe sliding abrasion.  Finished by grinding.