硬度塊,努氏硬度塊, 200-750 HK0.01
200-750 HK0.02
200-750 HK0.025
200-750 HK0.05
200-750 HK0.1
200-750 HK0.2
200-750 HK0.3
200-750 HK0.5
200-750 HK1 200-750 HK2