Kennametal Stellite Stellite® STAR cast

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Kennametal Stellite Stellite® STAR cast
Categories:	Metal; Nonferrous Metal; Cobalt Alloy; Superalloy
Material Notes:	Applications: Vane plugs, fuel metering pins, spacer bushings, ball bearing blanks, race bearing blanks, diesel engine exhaust, fluid valve seats, saw cutter inserts, wear pads, pins, balls, hardfaces when crack free deposits are not required. Corrosion: Corrosion resistance similar to Stellite alloy 3, but inferior to Stellite alloy 6. Excellent oxidation resistance at low temperatures, but not recommended for reducing environments. Corrosion will vary depending on concentration, temperature, stress, and type of contaminants so exposure tests are recommended. Machinability: Stress relieve before and during machining by holding at 900°C (1650°F) for four hours and slow cool. Wear: High tungsten content results in excellent hot hardness and low stress abrasion resistance superior to Stellite alloy 3. Wear resistance is similar to Stellite alloy 3 and is non-galling when mated with other Stellite alloys. Data provided by the manufacturer, Deloro Stellite Inc. Product of former Deloro Stellite Inc.
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Physical Properties	Original Value	Comments

Density	8.58 g/cc	P/M (98%)
	8.76 g/cc	Theoretical

Mechanical Properties	Original Value	Comments
Hardness, Rockwell C	56	Hot hardness.
Tensile Strength, Ultimate	428 MPa
Elongation at Break	<= 1.0 %	in 25.4 mm
Modulus of Elasticity	258 GPa

Electrical Properties	Original Value	Comments
Magnetic Permeability	<= 1.2 @Temperature 22.0 °C	200 Oersted

Thermal Properties	Original Value	Comments
CTE, linear	12.0 µm/m-°C @Temperature 0.000 - 100 °C
	12.1 µm/m-°C @Temperature 0.000 - 200 °C
	12.2 µm/m-°C @Temperature 0.000 - 300 °C
	12.3 µm/m-°C @Temperature 0.000 - 400 °C
	12.6 µm/m-°C @Temperature 0.000 - 500 °C
	12.8 µm/m-°C @Temperature 0.000 - 600 °C
	13.2 µm/m-°C @Temperature 0.000 - 700 °C
	13.6 µm/m-°C @Temperature 0.000 - 800 °C
	14.3 µm/m-°C @Temperature 0.000 - 900 °C
	15.1 µm/m-°C @Temperature 0.000 - 1000 °C
Melting Point	1215 - 1299 °C
Solidus	1215 °C
Liquidus	1300 °C

Component Elements Properties	Original Value	Comments
Boron, B	<= 1.0 %
Carbon, C	2.5 %
Chromium, Cr	32.5 %
Cobalt, Co	36.5 %	As remainder
Iron, Fe	<= 3.0 %
Manganese, Mn	<= 1.0 %
Nickel, Ni	<= 3.0 %
Other	<= 2.0 %
Silicon, Si	<= 1.0 %
Tungsten, W	17.5 %

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NSJMPB / 19188

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