Rockwell Hardness 30N Scale – Low Range (Nominal 45 HR30N)

Rockwell Hardness 15N Scale – High Range (Nominal 91 HR15N)

SRM 2818 1 option

1 block

Rockwell Hardness 30N Scale – Mid Range (Nominal 64 HR30N)

SRM 2820 1 option

1 block

Rockwell Hardness 30N Scale – High Range (Nominal 79 HR30N)

SRM 2821 1 option

1 block

Tool Steel for Abrasive Wear Standard

SRM 1857 1 option

2 blocks

Rockwell C Hardness – Low Range

SRM 2810 1 option

1 block

Rockwell C Hardness – Mid Range

SRM 2811 1 option

1 block

Rockwell C Scale Hardness – High Range

SRM 2812 1 option

1 block

Rockwell Hardness 15N Scale – Low Range (Nominal 72 HR15N)

SRM 2816 1 option

1 block

Rockwell Hardness 15N Scale – Mid Range (Nominal 83 HR15N)

SRM 2817 1 option

1 block

Knoop Microhardness of Steel

SRM 2828 1 option

each

Vickers Microhardness of Steel

SRM 2829 1 option

each

Knoop Hardness of Ceramics

SRM 2830 1 option

each