CPM REX T-15® Powder Metal
CPM REX T15® is a super high speed steel made by the Crucible Particle Metallurgy (CPM®) process. It is a tungsten type high speed steel 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.Analysis:
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C
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CO
|
CR
|
MN
|
MO
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NI
|
P
|
S
|
SI
|
V
|
W
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| 1.60 | 5.00 | 4.00 | 0.30 | | | | 0.06 Min. | 0.30 | 4.90 | 12.00 |
Size Availability:
Flats • Hollowbar • Metric • Non-Standard • Rounds • Squares • StandardApplications:
| Broaches | End Mills | Forming Tools |
| Hobs | Milling Cutters | Shaper Cutters |
| Spade Drills | Taps | |
Designations:
AISI T15 - US
CPM REX T15(HS) - US
| Treatment | Temperature Range | Cooling/Quenching | Notes |
|---|
| Forging | 2000-2100° F | Slow cool. | Do not forge below 1700 |
| Annealing | | Air or Furnace | 1600° F, hold 2 hours, slow cool 30° F per hour maximum to 1000° F. Air or Furnace cool. |
| Stress Relieving | 1100-1300° F | Air or furnace cool. | Hold 2 hours. |
| Preheating | 1500-1550° F | | 1500-1550° F and equalize. A second preheat at 1800-1900° F is suggested for vacuum or atmosphere hardening. |
| Hardening | 2125-2250° F | Quench in salt, oil or atmosphere to 1000-1100° F, equalize, then air cool to below 125° F or hand warm. The vacuum or atmosphere quench rate through 1850-1300° F range is critical to achieve optimum heat treat response. | 2125-2250° F. Standard recommendation to achieve Rc 66-68 is to use 225-2250° F. |
| Tempering | (See Chart) | | Triple tempering required. |
Data is typical and should not be construed as actual values for any category.
Applications and technical information require engineers and tool designers to exercise independent judgement.
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