Download or read book GB T 42671 2023 Translated English of Chinese Standard GB T 42671 2023 GBT42671 2023 written by https://www.chinesestandard.net and published by https://www.chinesestandard.net. This book was released on 2024-01-21 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: This document describes the principle, instrument and equipment, specimens, test procedures and test report of the test method for surface roughness of carbon materials. This document is applicable to the evaluation of surface roughness of carbon material products with aggregate particles less than 1.6 mm through the stylus profile method. Generally, the arithmetical mean deviation of profile (Ra) is selected as the measurement parameter, and other parameters, for example, maximum height of profile (Rz), can also be selected as needed. Other carbon materials may take this as a reference.