Stellite 3 casting
Stellite3consists 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.
Stellite3 is an alloy possessing excellent abrasion and corrosion resistance for applications such as pump sleeves, rotary seal rings, wear pads, expeller screws and bearing sleeves. It retains its hardness at temperatures in excess of 760°C.The high carbon content of this alloy increases the volume fraction of carbides and hence its abrasion and solid particle erosion resistance. The high tungsten content improves its high temperature properties.
It has excellent metal to- metal wear resistance and resistsgalling when mated with other Stellite alloys. Stellite3 is well suited to applications involving extreme low- angle erosion and severe abrasion, with some sacrifice in toughness.The equivalent of Stellite3 for hardfacing materials like powders is known as Stellite1.
Application field：Surgical scissor inserts, valve seat inserts, needle holders, steel mill guide rolls, seaming rolls, sleeves, bushings, bearing balls, wear pads, burner nozzles, palm guides.
Stellite3 has excellent resistance to oxidation but is not recommended for reducing acids.
The typical electrode potential in sea water at room temperature is approx. -0.4 V (SCE).Stellite3 corrodes primarily by a pitting mechanism and not by general mass loss in seawater and chloride solutions.