Carbide Coal Bits

cemented carbide drill bits / coal mine drill bits grades, properties, and applications:                                                                                                          Grade   Performance & application recommendedDensityT.R.SHardnessg/cm3MPHRAYG4C15.1180090.0                                                                                                                      Mainly used as small buttons for percussion bits to cut soft and medium hard formations.YG614.9210090.0or coring crowns, electric coal drill bits, coal cutting picks, oil cone bits and scraping knife bits, usd in geological prospecting, coal mining and oil well boring.YG814.7240089.5For coring crowns, electric coal drill bits, coal cutting picks, cone drill bits and scraping knife bits, used in geological prospecting, coal mining and oil well boring.YG8C14.7245088.5  Mostly used as the buttons of small and mediumsized percussion bits and as the inserts of rotary prospecting bits to cut soft and medium hard formations.YG9C14.6245087.8Suitable to strips, conical buttons for rotary percussion-resistant, geological prospecting buttons, cut soft and medium hard formations.YG10C14.4255087.0Primarily for the buttons and inserts of rotary percussion bits to cut medium-hard and hard formations.YG11C14.4260087.0 Largely for the inserts and buttons of percussion bits and tricone bits to cut medium-hard, hard, and very hard formations.YG13C14.2265086.5Predominatly for the buttons of tricone bits and inserts of rotary percussion bits to cut hard and vey hard formations.YG15C14.0270086.5For oil cone drill bits, for medium soft and medium -hard rocks.YG1514.0250087.5Good strength and less wear resistance, for bits of rotary hammer rock drills and heavy rock drills, for hard and very hard rocks.