All hardness blocks provided by American Canadian Federation have standard sample certificates, which have the following qualifications (globally recognized): comply withISO/IEC17025:2005、ANSIThe prescribed process can be traced back toNIST, possessingA2LA、NVLAPperhapsA ClassAuthorization number. And hardness blocks with specified ranges or deviations can be customized according to user requirements.

1、 Rockwell hardness block

1Standard Rockwell hardness block

2Standard plastic Rockwell hardness block

3Standard surface Rockwell hardness block

2、 Standard Brinell hardness block

3、 Standard Vickers hardness block

4、 Standard microhardness block

5、 Standard Knoop hardness block

6、 Standard Leeb hardness block

7、 Standard Shore hardness block

For more information on hardness blocks, please consult Jialian Instrument Co., Ltd. in the United States