STELLITETM 3 ALLOY - Deloro...STELLITE TM 3 is an alloy possessing excellent abrasion and corrosion...
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Stellite™, Tribaloy™, Nistelle™, Stelcar™, Jet Kote™, and Delcrome™ are registered trademarks of Kennametal Inc. Document Number: MDS St3 rev. 00 STELLITE TM 3 ALLOY STELLITE TM COBALT-BASED ALLOYS consists 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 TM 3 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 resists galling when mated with other Stellite TM alloys. Stellite TM 3 is well suited to applications involving extreme low- angle erosion and severe abrasion, with some sacrifice in toughness. The equivalent of Stellite TM 3 for hardfacing materials like powders is known as Stellite TM 1. CORROSION RESISTANCE Stellite TM 3 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). Stellite TM 3 corrodes primarily by a pitting mechanism and not by general mass loss in seawater and chloride solutions. NOMINAL CHEMICAL COMPOSITION (MASS%) ALLOY Co Cr W C Others Stellite TM 3 Bal. 30,0 13,0 2,5 Fe, Ni, Mn, Si PHYSICAL PROPERTIES ALLOY Hardness Density Melting Range Stellite TM 3 48 - 63 HRC ~ 8,7 g/cm 3 ~ 1213 – 1285°C NOMINAL HOT HARDNESS (HV resp. DPH) AS CAST 20°C 100°C 200°C 300°C 400°C 500°C 600°C 700°C 800°C 900°C 606 573 540 508 485 453 406 330 217 140
Transcript of STELLITETM 3 ALLOY - Deloro...STELLITE TM 3 is an alloy possessing excellent abrasion and corrosion...
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Stellite™, Tribaloy™, Nistelle™, Stelcar™, Jet Kote™, and Delcrome™
are registered trademarks of Kennametal Inc.
Document Number: MDS St3 rev. 00
STELLITETM 3 ALLOY
STELLITETM COBALT-BASED ALLOYS consists 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.
STELLITETM 3 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 resists galling when
mated with other StelliteTM alloys. StelliteTM 3 is well suited to applications involving extreme low-
angle erosion and severe abrasion, with some sacrifice in toughness.
The equivalent of StelliteTM 3 for hardfacing materials like powders is known as StelliteTM 1.
CORROSION RESISTANCE
StelliteTM 3 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).
StelliteTM 3 corrodes primarily by a pitting mechanism and not by general mass loss in seawater
and chloride solutions.
NOMINAL CHEMICAL COMPOSITION (MASS%)
ALLOY Co Cr W C Others
StelliteTM 3 Bal. 30,0 13,0 2,5 Fe, Ni, Mn, Si
PHYSICAL PROPERTIES
ALLOY Hardness Density Melting Range
StelliteTM 3 48 - 63 HRC ~ 8,7 g/cm3 ~ 1213 – 1285°C
NOMINAL HOT HARDNESS (HV resp. DPH) AS CAST
20°C 100°C 200°C 300°C 400°C 500°C 600°C 700°C 800°C 900°C
606 573 540 508 485 453 406 330 217 140
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EXAMPLE FOR TENSILE PROPERTIES AT ROOM TEMPERATURE
PRODUCT FORM Ultimate Tensile
Strength Rm
Yield Stress
Rp (0,2%)
Elongation
A
Sand Casting, heat treated ~ 490 MPa N.A.
