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Crucible Steel CPM® Rex M4 HC(HS) Tool Steel
| Category | Metal , Ferrous Metal , Carbon Steel , High Carbon Steel , Tool Steel |
| Manufacturer | Crucible Steel |
| Trade Name | CPM® |
| Port | Ningbo port,China |
| Trade Terms | FOB, CFR, CIF |
| Payment Terms | L/C, T/T, Western Union |
| Download PDF | Crucible Steel CPM® Rex M4 HC(HS) Tool Steel.pdf  |
| Price | EMAIL US sales@lookpolymers.com |
Material Notes:
CPM REX M4 HC(HS) is a high vanadium special purpose high speed steel exhibiting better wear resistance and toughness than M2 or M3 in cold work punches, die inserts and cutting applications involving high speed and light cuts.The high carbon (HC) modification to standard M4 is designed to provide optimum hardening response in larger cross-section tools or in vacuum or atmosphere heat treating.The high sulfur (HS) modification is standard for larger diameter bars, providing enhanced machinability and grindability.The CPM process produces very homogeneous, high quality steel characterized by superior dimensional stability, grindability, and toughness compared to steels produced by conventional processes.Information provided by Crucible Specialty Metals.
| Physical Properties | Metric | English | Comments |
|---|---|---|---|
| Density | 7.97 g/cc | 0.288 lb/in³ |
| Mechanical Properties | Metric | English | Comments |
|---|---|---|---|
| Hardness, Brinell | 225 - 255 | 225 - 255 | Annealed |
| Hardness, Rockwell C | 63.5 | 63.5 | Hardening Temperature- 1165°C; Tempering Temperature- 565°C |
| 65.5 | 65.5 | Hardening Temperature- 1205°C; Tempering Temperature- 550°C | |
| Modulus of Elasticity | 214 GPa | 31000 ksi | |
| Flexural Strength | 5088 MPa | 738000 psi | Hardening Temperature- 1205°C, Tempering Temperature- 550°C |
| 5129 MPa | 743900 psi | Hardening Temperature- 1165°C, Tempering Temperature- 565°C | |
| Charpy Impact | 27.0 J | 19.9 ft-lb | Hardening Temperature- 1205°C; Tempering Temperature- 550°C |
| 38.0 J | 28.0 ft-lb | Hardening Temperature- 1165°C; Tempering Temperature- 565°C |
| Thermal Properties | Metric | English | Comments |
|---|---|---|---|
| CTE, linear | 11.5 µm/m-°C @Temperature 40.0 - 260 °C |
6.39 µin/in-°F @Temperature 104 - 500 °F |
|
| 12.1 µm/m-°C @Temperature 40.0 - 540 °C |
6.72 µin/in-°F @Temperature 104 - 1000 °F |
||
| Thermal Conductivity | 18.99 W/m-K | 131.8 BTU-in/hr-ft²-°F | |
| 20.82 W/m-K @Temperature 100 °C |
144.5 BTU-in/hr-ft²-°F @Temperature 212 °F |
||
| 23.96 W/m-K @Temperature 300 °C |
166.3 BTU-in/hr-ft²-°F @Temperature 572 °F |
||
| 25.58 W/m-K @Temperature 500 °C |
177.5 BTU-in/hr-ft²-°F @Temperature 932 °F |
||
| 26.09 W/m-K @Temperature 540 °C |
181.1 BTU-in/hr-ft²-°F @Temperature 1000 °F |
| Component Elements Properties | Metric | English | Comments |
|---|---|---|---|
| Carbon, C | 1.42 % | 1.42 % | |
| Chromium, Cr | 4.0 % | 4.0 % | |
| Iron, Fe | 79.47 % | 79.47 % | As Remainder |
| Magnesium, Mg | 0.30 - 0.70 % | 0.30 - 0.70 % | |
| Molybdenum, Mo | 5.25 % | 5.25 % | |
| Sulfur, S | 0.060 - 0.22 % | 0.060 - 0.22 % | |
| Tungsten, W | 5.5 % | 5.5 % | |
| Vanadium, V | 4.0 % | 4.0 % |
| Descriptive Properties | Value | Comments |
|---|---|---|
| Grindability; Metal Removed/Wheel Worn | 4 |
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