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GradeDensityT.R.SHardnessPerformance & application recommendedApprox grade
       in China
g/cm3MPaHRA
　MK415.1180090.0Mainly used as small buttons for percussion bits to cut soft and medium hard formations.YG4C
　MK614.9210090.0coring   crowns, electric coal drill bits, coal cutting picks, oil cone bits and   scraping knife bits, usd in geological prospecting, coal mining and oil   well borYG6
　MK814.7240089.5For   coring crowns, electric coal drill bits, coal cutting picks, cone drill   bits and scraping knife bits, used in geological prospecting, coal   mining and oYG6
　MK1514.0250087.5Good   strength and less wear resistance, for bits of rotary hammer rock   drills and heavy rock drills, for hard and very hard rocksYG15
　MK1014.7245088.5Mostly used as the buttons of small and mediumsized percussion bits and as the inserts of rotary prospecting bits to cut soft aYG8C
　MK6014.0250087.5Suitable   to strips, conical buttons for rotary percussion-resistant, geological   prospecting buttons, cut soft and medium hard formations.YK15
       YG9C
　MK2014.4255087.0Primarily for the buttons and inserts of rotary percussion bits to cut medium-hard and hard formations.YK20
       YG10C
　MK2514.5260087.5Primarily for the buttons and inserts of rotary percussion bits to cut medium hard and very hard formations.YK25
　MK3014.4260087.0Largely for the inserts and buttons of percussion bits and tricone bits to cut medium-hard, hard, and very hard formations.YG11C
　MK4014.2265086.5Predominatly for the buttons of tricone bits and inserts of rotary percussion bits to cut hard and vey hard formations.YK40
       YG13C
　MK5014.0270086.5For oil cone drill bits, for medium soft and medium -hard rocks.YG15C

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