>> P.236
RockwellCscalehardnessLoad1471NHRC38373635343332313029282726252423222120(18)(16)(14)(12)(10)(8)(6)(4)(2)(0)VickershardnessBrinellhardnessRockwellhardnessShorehardnessHV372363354345336327318310302294286279272266260254248243238230222213204196188180173166160AscaleBscaleStandardballTungstenLoad588.4NLoad980.7NCarbideballDiamondcircularconeDiameter1/16inballHS35334433632731931130129428627927126425825324724323723122621921220319418717917116515815235334433632731931130129428627927126425825324724323723122621921220319418717917116515815269.468.968.467.967.466.866.365.865.364.764.363.863.362.862.462.061.561.060.5――――――――――――(109.0)(108.5)(108.0)(107.5)(107.0)(106.0)(105.5)(104.5)(104.0)(103.0)(102.5)(101.5)(101.0)100.099.098.597.896.795.593.992.390.789.587.185.583.581.75150494847464443424141403838373635353433323129282726252424Ⅳ-19
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