Alloy

Colmonoy 56

Alloy Type

Nickel with Chromium Boride

Nominal Composition (%)

C 0.60
Si 3.80
Cr 13.20

 Fe 4.40
B 2.60
Ni Balance

Rockwell Hardness
(C-scale)

56-61

Density (gm/cc)

8.18

Fusing Temperature (approx.)

1885°F
1030°C

Resistance:

to
Abrasion

to

Corrosion

to
Impact

to
Galling

 

2

2

4

2

Supplied Forms

Crushed Powder, Bare Rods, Ingot, Cored Wire

Method of application

Spraywelder, Oxyacetylene, GTAW, GMAW, PTA

Description and General Uses

 

Better ductility and impact resistance than Colmonoy No. 6. Finished with carbide tools and grinding.