Based on experiences from civil aircraft engineering, the item 603 and item 613 of CCAR25-R5 for materials are analyzed and investigated. Firstly, the history of the items were reviewed to receive the original intentions, as well as good understanding of the items. Then upon practices, the methodologies of material certification during the Type Certification(TC) were provided. There are two levels for the material compliance during TC. The first level is to prove the reasonability of the characteristic determinations in material specifications. The second level is to verify that the used materials in aircraft can meet the material specifications’ requirements. Furthermore, certification methods of three kind of material specifications, which are accepted by the regulations, were presented. In the end, three suggestions to improve the material certification efficiency during TC are provided. It is better for the material certifications to execute the tasks individually and specially. Top level coordinations are necessary for China’s material certifications at present.