Boasting 70 years of experience in test piece processing! We aim for the future of standard strength specimens.
The "Standard Strength Specimen" aims to manufacture and sell standard and reference specimens for calibrating hardness testing machines and Charpy impact testing machines. The hardness standard specimens are assigned standard values with high precision for all products by JBI (Japan Bearing Inspection Association), and the Charpy impact reference specimens are certified for standard values through tests by NK (Nippon Kaiji Kyokai) before shipment. Additionally, we strive to provide cost-effective products through consistent production that leverages our in-house developed heat treatment technology and the expertise of test piece processing manufacturers. 【Features】 ■ Traceable standard specimens to national standard values ■ Provision of standard notches ■ Technology development and quality assurance through quality engineering ■ Winner of the Taguchi Method Symposium Grand Prize ■ High cost performance *For more details, please refer to the PDF document or feel free to contact us.
Inquire About This Product
basic information
【Hardness Standard Pieces (Excerpt)】 ■HRC (20, 25, 30, 35, 40, 45, 50, 55, 60, 62, 64, 67, 70) ・Dimensions: φ65 ・Material: Special Steel ■HRB (30, 40, 50, 60, 70, 80, 90, 95, 100) ・Dimensions: φ65 ・Material: Special Steel / Copper Alloy ■HRA (55, 60, 65, 70, 75, 80, 85) ・Dimensions: φ65 ・Material: Special Steel ■HR45N (20, 30, 40, 50, 60, 70) ・Dimensions: φ65 ・Material: Special Steel ■HRE (70, 80, 90, 92, 100, 112) ・Dimensions: φ65 ・Material: Special Steel / Copper Alloy *For more details, please refer to the PDF document or feel free to contact us.
Price range
Delivery Time
Applications/Examples of results
For more details, please refer to the PDF document or feel free to contact us.
catalog（1）
Download All Catalogs
Company information
Our company manufactures and sells hardness standard pieces and Charpy reference pieces, as well as conducts hardness calibration and contracted material testing. With decades of experience in relation to metal materials, we have engaged in various fields starting from the processing of various test pieces and have been committed to technological innovation. In order to meet the increasingly sophisticated and diverse needs of our customers, we aim to improve our technology and quality through relentless effort and a spirit of challenge.