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Latrobe Tatmo-VN™ ASTM M7 High Speed Steel
| Category | Metal , Ferrous Metal , Alloy Steel , Carbon Steel , High Carbon Steel , Tool Steel |
| Manufacturer | Latrobe Steel |
| Trade Name | Tatmo-VN™ |
| Port | Ningbo port,China |
| Trade Terms | FOB, CFR, CIF |
| Payment Terms | L/C, T/T, Western Union |
| Download PDF | Latrobe Tatmo-VN™ ASTM M7 High Speed Steel.pdf  |
| Price | EMAIL US sales@lookpolymers.com |
Material Notes:
TATMO-VN is an M7 type high speed steel modified by alloy balancing and a nitrogen addition to develop superior hardness response in heat treatment. It is an excellent grade for
many cutting tool applications that require an optimum balance of red hardness, edge toughness and wear resistance. The combination of outstanding properties and high
hardness response makes Tatmo-VN a logical alternative for cobalt high speed steels in may cutting tool applications. Typical applications for Tatmo-VN high speed steel include twist drills, taps, end mills, reamers and milling cutters.Information Provided by Timken Latrobe Steel.Timken sold Latrobe in December 2006. They are now Latrobe Specialty Steels Co.
| Physical Properties | Metric | English | Comments |
|---|---|---|---|
| Specific Gravity | 7.94 g/cc | 7.94 g/cc | |
| Density | 7.94 g/cc | 0.287 lb/in³ |
| Mechanical Properties | Metric | English | Comments |
|---|---|---|---|
| Hardness, Rockwell C | 59.0 | 59.0 | Oil Quenched at 1218°C; 622°C Temper Temperature |
| 63 | 63 | Oil Quenched from 1191°C; 482°C Temper Temperature | |
| 63 | 63 | Oil Quenched from 1191°C; 482°C Temper Temperature | |
| 63.5 | 63.5 | Oil Quenched at 1218°C; 482°C Temper Temperature | |
| 66.1 | 66.1 | Oil Quenched from 1191°C; 538°C Temper Temperature | |
| 66.5 | 66.5 | Oil Quenched at 1218°C; 538°C Temper Temperature | |
| Modulus of Elasticity | 207 GPa | 30000 ksi | |
| Machinability | 45 - 50 % | 45 - 50 % | 1% Carbon Steel |
| Izod Impact Unnotched | 28.5 J | 21.0 ft-lb | Oil Quenched at 1218°C; 482°C Temper Temperature |
| 32.5 J | 24.0 ft-lb | Oil Quenched at 1218°C; 594°C Temper Temperature | |
| 36.6 J | 27.0 ft-lb | Oil Quenched at 1218°C; 622°C Temper Temperature | |
| 39.3 J | 29.0 ft-lb | Oil Quenched at 1191°C; 594°C | |
| 42.0 J | 31.0 ft-lb | Oil Quenched at 1191°C; 482°C | |
| 52.9 J | 39.0 ft-lb | Oil Quenched at 1191°C; 622°C |
| Thermal Properties | Metric | English | Comments |
|---|---|---|---|
| CTE, linear | 11.68 µm/m-°C @Temperature 21.0 - 204 °C |
6.489 µin/in-°F @Temperature 69.8 - 399 °F |
|
| 13.3 µm/m-°C @Temperature 21.0 - 538 °C |
7.39 µin/in-°F @Temperature 69.8 - 1000 °F |
| Component Elements Properties | Metric | English | Comments |
|---|---|---|---|
| Carbon, C | 1.02 % | 1.02 % | |
| Chromium, Cr | 3.75 % | 3.75 % | |
| Iron, Fe | 82.53 % | 82.53 % | |
| Manganese, Mn | 0.25 % | 0.25 % | |
| Molybdenum, Mo | 8.5 % | 8.5 % | |
| Silicon, Si | 0.30 % | 0.30 % | |
| Tungsten, W | 1.75 % | 1.75 % | |
| Vanadium, V | 1.9 % | 1.9 % |
| Chemical Properties | Metric | English | Comments |
|---|---|---|---|
| Critical Temperature | 749 °C | 1380 °F | Ar3 |
| 780 °C | 1440 °F | Ar1 | |
| 824 °C | 1520 °F | Ac1 | |
| 860 °C | 1580 °F | Ac3 |
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