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WD-Co12

PRODUCT

Introduction

WD-Co12 could be considered as an intermediate alloy between WD-Co6 and WD-Co1. It contains a higher fraction of hard, brittle carbides than WD-Co6, and has increased resistance to lowangle erosion, abrasion, and severe sliding wear whilst retaining reasonable impact and cavitation resistance. WD-Co12 is often used self-mated or running against WD-Co6 or WD-Co1. The higher tungsten content provides better high temperature properties compared to WD-Co6, and it can be used at temperature up to 700˚C.

WD-Co12 is typically used for cutting tools that need to withstand abrasion, heat and corrosion. Examples include industrial knives for cutting carpets, plastics, paper and synthetic fibres; and saw tips in the timber industry. It is also used for control plates in the beverage industry, pump vanes, bearing bushes and narrowneck glass mold plungers; and for hardfacing of engine valves, pinch rollers in the metal-processing industries, and rotor blade edges.

Common Name: Stellite® 12, Polystel® 12

Chemical Composition(%)

C	Si	Mn	Mo	Cr	W	Ni	Fe	Co	Others
1.4	1.4	≤1.0	≤1.0	30.0	8.5	≤3.0	≤3.0	Bal	<1.0

Deposit Characteristic

Abrasion Resistance	Good
Impact Resistance	Good
Corrosion Resistance	Good
Hardness	HRC 44-50
Deposit Layers	2 Max
Deposit Cross Checks	* No
Magnetic	No
Hot Wear Hardness	Good
Machinability	Carbide Tools