HIGH SPEED steels have been named to show their ability to resist softening at elevated temperatures therefore maintaining a sharp cutting edge when cuts are heavy and speeds are high. They are the most highly alloyed of all of the tool steel types. They normally contain comparatively large amounts of tungsten or molybdenum, chromium, Cobalt and vanadium, along with carbon.
THE MOLYBDENUM high speed tool steels contain 3.50 to 9.50% molybdenum. They characteristically contain 4.00% tungsten, and 1.00 to 5.00% vanadium. Carbon is fairly high—0.80 to 1.50%. Applications cover a wide range of cutting tools. Examples include these: twist drills, reamers, milling cutters, lathe and planer tools, cutoff knives, and insert cutter blades.
THE TUNGSTEN high speed tool steels have 12.00 to 20.00% tungsten. They also have substantial amounts of chromium and vanadium, and some have considerable amounts of cobalt. Carbon is high—0.70 to 1.50%, depending on the grade. Tooling uses include bits, drills, reamers, taps, broaches, milling cutters, hobs, punches, and dies.
|PRODUCT||DELIVERY CONDITION AND AVAILABLE DIMENSIONS|
|ROUND||COLD DRAWN||CENTERLESS GROUND||PEELED||TURNED|
|DIAMETER IN MM||2.50 - 12.0||8.5 - 30.0||16 - 75||75 - 205|
|SQUARE||HOT ROLLED BLACK||FORGED ALL SIDE MILLED|
|SIZE IN MM||7.5 X 7.5 - 50.0 X 50.0||55 X 55 - 180 X 180|
|FLATS||HOT ROLLED BLACK||HOT ROLLED, 2 EDGE MILLED||FORGED ALL SIDE MILLED|
|THICK x WIDTH IN MM||6 - 30 X 20 - 130||13 - 80 X 150 - 410||90 - 130 X 100 - 410|
|SHEET||COLD ROLLED||HOT ROLLED|
|THICK x WIDTH xLENGTH IN MM||1.0 - 2.5 X 600 - 800 X 1500 - 2000||2.60 - 10 X 600 - 800 X 1500 - 2000|