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Crucible Steel CPM® REX® 66 (HS) High Speed Steel

Category Metal , Ferrous Metal , Carbon Steel , High Carbon Steel , Tool Steel
Manufacturer Crucible Steel
Trade Name CPM® REX®
Port Ningbo port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF Crucible Steel CPM® REX® 66 (HS) High Speed Steel.pdf
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Material Notes:
CPM Rex 66 is a super high speed steel made by the Crucible Particle Metallurgy (CPM) process. It is a tungsten type high speed with a high vanadium content for excellent abrasion resistance, similar to that of CPM Rex T15, and 8% cobalt for a higher red hardness than CPM Rex T15. It also offers high compressive strength due to its high attainable hardness. It is best suited for applications requiring both a high red hardness and high wear resistance.The CPM process results in a homogeneous microstructure with a finer, more uniform carbide distribution imparting superior dimensional stability, grindability and toughness when compared to steels produced by conventional processes. The CPM process also allows the design of more highly alloyed grades which cannot be produced by conventional steelmaking.Information provided by Crucible Industries
Physical Properties Metric English Comments
Density 8.249 g/cc
0.2980 lb/in³
Mechanical Properties Metric English Comments
Hardness, Rockwell C 66
66
hardened at 2050°F then quenched
48.5

@Tempering Temp. 649 °C
48.5

@Tempering Temp. 1200 °F
hardened at 2050°F then quenched and tempered
59.5

@Tempering Temp. 593 °C
59.5

@Tempering Temp. 1100 °F
hardened at 2050°F then quenched and tempered
63.5

@Tempering Temp. 566 °C
63.5

@Tempering Temp. 1050 °F
hardened at 2050°F then quenched and tempered
64.5

@Tempering Temp. 551.7 °C
64.5

@Tempering Temp. 1025 °F
hardened at 2050°F then quenched and tempered
65

@Tempering Temp. 538 °C
65

@Tempering Temp. 1000 °F
hardened at 2050°F then quenched and tempered
Modulus of Elasticity 214 GPa
31000 ksi
Thermal Properties Metric English Comments
CTE, linear 9.90 µm/m-°C

@Temperature 20.0 - 260 °C
5.50 µin/in-°F

@Temperature 68.0 - 500 °F
11.0 µm/m-°C

@Temperature 20.0 - 425 °C
6.11 µin/in-°F

@Temperature 68.0 - 797 °F
12.5 µm/m-°C

@Temperature 20.0 - 540 °C
6.94 µin/in-°F

@Temperature 68.0 - 1000 °F
Component Elements Properties Metric English Comments
Carbon, C 1.67 %
1.67 %
Chromium, Cr 4.75 %
4.75 %
Cobalt, Co 8.0 %
8.0 %
Iron, Fe 69.22 %
69.22 %
as balance
Molybdenum, Mo 2.0 %
2.0 %
Sulfur, S 0.060 %
0.060 %
0.22 %
0.22 %
added to improve machinability
Tungsten, W 9.5 %
9.5 %
Vanadium, V 4.8 %
4.8 %
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