Standard samples that have been rigorously chemically analyzed. The judgment results will be based not only on the observer's subjectivity but will also be more objective.
This product is a spark test standard specimen for understanding the characteristics of machine materials. It complies with JIS G0566-1980 and is specifically selected for educational training and general factory use, focusing on commonly used JIS steel materials. It is organized into three series: Group F, G, and H, which have been professionally selected from the K group and various steel type groups, and has undergone rigorous chemical analysis. The judgment becomes easier, quicker, and more reliable, and the results are based on a higher level of objectivity rather than solely relying on the observer's subjectivity. 【Features】 ■ The judgment is not influenced by the shape, roughness, or heat treatment structure of the sample. ■ Non-destructive full inspection is possible (excluding finished products). ■ Low equipment costs, time, and effort required. *For more details, please refer to the PDF document or feel free to contact us.
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basic information
【Lineup】 ■ Comprehensive Group for Educational Practice (15 types) ・ Group "K" ■ Dedicated Groups by Application (15 types each) ・ Carbon Steel Group "F" ・ Tool Steel Group "G" ・ Structural and Special Purpose Steel Group "H" *For more details, please refer to the PDF materials or feel free to contact us.
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Applications/Examples of results
【Uses】 ■Detection of foreign matter ■Confirmation of the presence or absence of decarburization and carburization layers ■Identification of contained elements and estimation of their quantities ■Estimation of steel grades ■Estimation of component quantities before precise analysis (enabling full inspection) ■Other assessments, such as determining high-temperature oxidation resistance, nitriding, and hardening *For more details, please refer to the PDF document or feel free to contact us.
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Yamamoto Scientific Tool Research Co., Ltd. is a specialized manufacturer of high-precision hardness reference specimens compliant with ISO and JIS standards. We handle high-precision hardness reference specimens, microscopic tissue standard specimens, spark test standard specimens, hard nesters, and Charpy impact reference specimens. Since ancient times, humanity has developed soft "iron" for tools and weapons, honing the technology to increase the carbon content in iron to enhance its strength, which has led to the use of various types of metals for a wide range of applications today. The high-precision hardness reference specimens compliant with ISO and JIS for indirect verification of hardness testers are widely used around the world, thanks to Japan's cultivation of hardness uniformity recognized globally and the standard values based on international standards.