Characteristics and types of high-speed steel
Brand R6M5, R12F3, Р8М3К6С, Р8М3, Р8М5, P9, P18 used for the production of high speed tool. Favorably great heat resistance, have a high estimated hardness. Alloying elements — vanadium, molybdenum, cobalt, tungsten. The tools are made from these grades of steel, very durable, with materials at high speeds is not softened at a high temperature (600°C) and do not lose resistance to wear.
Percentage composition GOST 19265−73
|R6M5||basis||≤0,6||0,82−0,9||3,8−4,4||4,8−5,3||Of 1.7−2.1||≤0,25||0,2−0,5||≤0,03||≤0,03||5.5 to 6.5||0,2−0,5||≤0,5|
||0.82 — 0.9||3.8 — 4.3||≤1
||2.5 — 3||≤0,25||0.2 — 0.5||≤0,03
||≤0,03||12 — 13||0.2 — 0.5||≤0,5|
|R18||---«---||≤0,6||0.73−0.8||3.8−4.4||0.5−1||1−1.4||≤0,25||0.2 — 0.5||≤0,25||≤0,03||≤0,03||17.5−19%||≤0,5||≤0,5|
Thread milling cutters, cutters, drills, mills, reamers, core drills, taps, broaches for processing of structural steels with strength up to 1000 MPa.
In closed warehouses or under the shed providing adequate protection against mechanical and other damage.
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