黑色金属硬度对照表.doc

黑色金属硬度对照表(GB117274)洛氏HRC维氏HV布氏30D2洛氏HRC维氏HV布氏30D2洛氏HRC维氏HV布氏30D2洛氏HRC维氏HV布氏30D2HBd102d54d2.5HBd102d54d2.5HBd102d54d2.5HBd102d54d2.569997-56620-434114013.049302892833.61168959- 55599- 423993913.087292812763.65567923-54579-413883803.130282742693.70166889-53561-403773703.171272682633.74165856-552543-393673603.214262612573.78364825-51525-383573503.258252552513.82663795-50509-373473413.299242492453.87162766-49493-363383323.343232432403.90961739-48478 -353293233.388222372343.95760713-474634492.886343203413.434212312293.99859688-464494362.927333123063.477202262254.03258664-454364242.967323042983.522192212204.07557642-444234133.006312962913.563182162164.111注：30D2试验载荷，kgf;D-钢球直径。d102d54d2.5分别为钢球直径10mm、2钢球直径5mm4钢球直径2.5mm时的压痕直径，mm。