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Crucible Steel CPM® Rex® T15(HS), AISI T15 High Speed Steel Rex® T15(HS)
Categories: Metal; Ferrous Metal; Carbon Steel; High Carbon Steel; Tool Steel

Material Notes: CPM Rex T15 is a super high speed steel made by the Crucible Particle Metallurgy (CPM) process. It is a tungsten type high speed containing high vanadium for excellent abrasion resistance, and cobalt for good red hardness. CPM Rex T15 is ideal for cutting difficult to machine materials where high frictional heating is encountered.

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 Specialty Metals.

Key Words: AISI T15 High Speed Steel
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Physical PropertiesOriginal ValueComments
Density 8.193 g/cc
 
Mechanical PropertiesOriginal ValueComments
Hardness, Brinell 245 - 275Annealed
Hardness, Rockwell C 64.5Hardening Temperature- 1175°C; Tempering Temperature- 565°C
 68Hardening Temperature- 1235°C; Tempering Temperature- 540°C
Modulus of Elasticity 214 GPa
Flexural Strength 4005 MPaHardening Temperature- 1235°C, Tempering Temperature- 540°C
 5102 MPaHardening Temperature- 1175°C, Tempering Temperature- 565°C
Charpy Impact 16.0 JHardening Temperature- 1235°C; Tempering Temperature- 540°C
 29.0 JHardening Temperature- 1175°C; Tempering Temperature- 565°C
 
Thermal PropertiesOriginal ValueComments
CTE, linear 9.90 µm/m-°C
@Temperature 20.0 - 260 °C
 12.5 µm/m-°C
@Temperature 20.0 - 540 °C
Shrinkage -0.200 %
@Treatment Temp. 1205 °C
Hardening
 
Component Elements PropertiesOriginal ValueComments
Carbon, C 1.6 %
Chromium, Cr 4.0 %
Cobalt, Co 5.0 %
Iron, Fe 72.28 %As Remainder
Sulfur, S 0.060 - 0.22 %
Tungsten, W 12 %
Vanadium, V 4.9 %
 
Descriptive Properties
Grindability; Metal Removed/Wheel Worn2.2

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NCRUC010 / 16003

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