UNS Number R30012

Stellite 12 is a cobalt-base alloy having high heat and corrosion resistance with excellent wear and abrasion resistance. Examples include industrial knives for cutting carpets, plastics, paper and synthetic fibers; and saw tips in the timber industry. It is also used for control plates in the beverage industry, pump vanes, bearing bushes and narrow neck glass mold plungers; and for hardfacing of engine valves, pinch rollers in the metal-processing industries and rotor blade edges. It contains a higher fraction of hard, brittle carbides than Stellite 6, and has increased resistance to low angle erosion, abrasion, and severe sliding wear whilst retaining reasonable impact and cavitation resistance. The higher tungsten content provides better high temperature properties compared to Stellite 6, and it can be used at temperatures up to about 700˚C.

Available Forms of Stellite 12 at Rooplaxmi Steels:

•           Sheet
•           Plate
•           Bar
•           Pipe & Tube (welded & seamless)
•           Castings
•           Wire

Characteristics of Stellite 12:

•           High Heat and Corrosion resistance
•           Excellent wear and abrasion resistance

 

Stellite 12 Chemical Composition, %:

Co	Cr	W	C	Ni	Fe	Si	Mn
Balance	27-32	7.5-9.5	1.4-1.7 (hardfacings) 1.7-2.0 (castings)	1.5	3.0	0.7	2.5

 

Application of Stellite 12:

•           Oil, Gas and Mining Industries
•           Chemical Refineries, Power and Petrochemical Industry
•           Pulp and Paper Industry
•           Food Processing Industry
•           Wood and Timber Industry
•           Automotive Industry
•           Aerospace Industry
•           Medical Implants, Ancillary and Instrumentation

Mechanical Properties of Stellite 12:

At Room Temperature, Investment Castings As Cast

Ultimate Tensile Strength	740 Mpa
Yield	(0.2 % offset) 580 Mpa
Elongation	< 1 %