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Yamamoto Hardness Test Blocks are precision reference standards used to verify and calibrate hardness testers. They are manufactured in Japan with strict quality control, in accordance with ISO, ASTM, JIS, and DIN standards. These test blocks ensure reliable, repeatable hardness measurements across Rockwell, Vickers, Brinell, and Knoop scales as a result.

In Singapore, accurate hardness testing is critical for product compliance and certification. They are widely used by calibration labs, QA departments, and manufacturing companies. You can therefore find them in industries such as aerospace, automotive, oil & gas, and precision engineering. 

Product Overview:

• Hardness uniformity test blocks meeting with world’s highest standards HRC,HV,HBW.
• Universal reference values based on JIS/ISO standards with highly stable and reliable hardness values.
• Comes with a manufacturer inspection cert on actual block hardness value.

These high hardness uniformity hardness test block have been achieved in Japan and is accepted around the world in compliance with JIS/ISO standard values. Therefore, YSTL standard hardness blocks are used worldwide as hardness blocks for the indirect verification of hardness testers.

Typical Applications

Machine Verification & Calibration

• Used as a reference material to check whether a hardness tester is operating correctly.
• Therefore it helps ensure machines comply with ISO, ASTM, JIS, and DIN standards, essential for maintaining measurement traceability to international standards.
• Similarly, it helps early detection of any drift or malfunction in the hardness tester.

Training & Education

• Training programs for quality inspectors and technicians use it as a standard reference when using the hardness tester for example.
• In addition, it helps students understand the differences between Rockwell, Vickers, Brinell, and Knoop scales.

Yamamoto Scientific Tool Laboratory (YSTL) was first established in 1952 as the world’s leading manufacturer specializing in standards hardness blocks in Funabashi city, Chiba. Consequently their global reputation for superior quality ensures YSTL’s hardness blocks are used in a wide range of countries throughout Europe, America, Australia, and Asia.

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