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Latest update: 17/04/2020 16:54:13

Yamamoto Scientific Tool Laboratory Co., Ltd.

Pursuit of "zero hardness variation"

Our company is the only manufacturer specializing in the standard hardness blocks. Having nearly 100% of the domestic market and over 30% of overseas markets, our standard hardness block has been supplied to a wide range of users in the industrial sector, including the steel and automobile industries to universities and research institutions and put to various uses.

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High precision standard hardness block
Our high precision standard hardness blocks are JIS-/ISO-compliant reference test pieces for indirect verification of hardness testers. They are used around the world because of their uniform hardness nurtured in Japan and the reference value of the international standards. Certifications such as the ISO 9000 series require the maintenance of JIS-/ISO-compliant testers. Our customers use the high precision standard hardness blocks for daily management, such as checking the accuracy, stability, and reproducibility of testers. Besides, we are currently developing a reference piece for nanoindentation following advice from various fields.

-Excellent hardness uniformity
-No change in hardness over time

This company is recommended by the following support organizations.

Marketing Support Department, SMRJ