ASTM C886
ASTM C886 – Standard Test Method for Scleroscope Hardness Testing of Carbon and Graphite Materials Description: Significance and Use 5.1 The scleroscope is a rebound hardness tester with a scale divided into 140 equal parts. For carbon and graphite materials, there is no established correlation between the Scleroscope hardness scale and other hardness scales. The test …


