Crucible Steel CPM® Rex® 86® High Speed Steel

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Crucible Steel CPM® Rex® 86® High Speed Steel
Categories:	Metal; Ferrous Metal; Alloy Steel
Material Notes:	CPM Rex 86 is a super high speed steel (HSS) produced by the Crucible Particle Metallurgy (CPM) process that exhibits an excellent combination of high attainable hardness capability (68-70 HRC), red hardness, and abrasive wear resistance for difficult machining applications. The composition is designed to provide an optimum balance of vanadium-rich MC and tungsten-molybdenum-rich M6C primary carbides in the heat treated microstructure for enhanced wear resistance, while still maintaining good fabricating and toughness characteristics compared to other super HSS with similar attainable hardness capability . CPM Rex 86 may also be considered for cold work tooling or precision wear parts requiring a combination of excellent wear resistance and high attainable hardness. Information provided by Crucible Industries LLC.
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Physical Properties	Original Value	Comments

Density	8.10 g/cc

Mechanical Properties	Original Value	Comments
Hardness, Brinell	285 - 311	Annealed
Hardness, Rockwell C	52.9 @Treatment Temp. 650 - 1120 °C	Austenitized at 1120°C; Tempered at 650°C
	53.5 @Treatment Temp. 650 - 1165 °C	Austenitized at 1165°C; Tempered at 650°C
	55.0 @Treatment Temp. 650 - 1190 °C	Austenitized at 1190°C; Tempered at 650°C
	62.5 @Treatment Temp. 595 - 1120 °C	Austenitized at 1120°C; Tempered at 595°C
	63.5 @Treatment Temp. 595 - 1165 °C	Austenitized at 1165°C; Tempered at 595°C
	64.0 @Treatment Temp. 595 - 1175 °C	Austenitized at 1175°C; Tempered at 595°C
	64.5 @Treatment Temp. 650 - 1175 °C	Austenitized at 1175°C; Tempered at 650°C
	65.0 @Treatment Temp. 595 - 1190 °C	Austenitized at 1190°C; Tempered at 595°C
	67.0 @Treatment Temp. 540 - 1120 °C	Austenitized at 1120°C; Tempered at 540°C
	68.0 @Treatment Temp. 540 - 1165 °C	Austenitized at 1165°C; Tempered at 540°C
	68.7 @Treatment Temp. 540 - 1175 °C	Austenitized at 1175°C; Tempered at 540°C
	69.0 @Treatment Temp. 540 - 1190 °C	Austenitized at 1190°C; Tempered at 540°C

Component Elements Properties	Original Value	Comments
Carbon, C	2.00 %
Chromium, Cr	4.00 %
Cobalt, Co	9.00 %
Iron, Fe	64.9 %	Balance
Molybdenum, Mo	5.00 %
Sulfur, S	0.120 %
Tungsten, W	10.0 %
Vanadium, V	5.00 %

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NCRUC071 / 323332

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