Stellite™ Star J Alloy

Nominal Composition (Mass %) and Physical Properties

Co Cr W C Fe Ni Others Hardness Density (deposit) Melting Range
Bal 32.5 17.5 2.5 2.0 2.0 Mn, Si 50-63 HRC 8.76 g/cm3
0.316 lb/in3
1215-1299ºC
2220-2370ºF

Stellite Star J

Stellite cobalt-based alloys consist of complex carbides in an alloy matrix. They are resistant to wear, galling, and corrosion and retain these properties at high temperatures. Their exceptional wear resistance is due mainly to the unique inherent characteristics of the hard carbide phase dispersed in a CoCr alloy matrix.

Stellite Star J is recommended for use in extreme conditions of wear, abrasion, and heat. The alloy is similar to Stellite 3 in carbon content but with a higher tungsten content. This results in higher hot hardness and superior strength. The tungsten also changes the morphology and type of carbides resulting in improved abrasion resistance at the expense of ductility. Wear parts such as pads, pins, balls, and certain valve components in extreme environments are common applications for Stellite Star J. 

Stellite Star J Microstructure Casting
Stellite Star J Powder Metallurgy
DESIGNATION PRODUCT FORM
UNS R31001 Castings
UNS R301012 Powder Metallurgy

 

Stellite Star J Alloy Data Sheet

Check out our Stellite Star J Alloy data sheet for additional information.

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