A Mill Test Certificate (MTC) or Mill Test Report is issued by a manufacture/supplier to certify the chemical and mechanical properties of a material/product/welding consumable and its compliance to the applicable forms, technical specifications and standards. The MTC may contain all specification of the product including weight, dimensions, chemical composition, mechanical properties, condition of heat treatment, traceability, test results, manufacturing process.
Generally mill test certificates are required with conformance of EN 10204.
EN ISO 10204 is a standard that specifies requirements for the inspection and testing of metallic products. The differences between the various types of inspection certificates defined by EN ISO 10204 are as follows:
- EN ISO 10204 2.1: This type of certificate simply states that the products supplied are in compliance with the requirements of the order, but no specific testing or inspection results are provided.
- EN ISO 10204 2.2: This certificate states that the products supplied have been tested by the manufacturer in accordance with specific procedures and that the results of these tests meet the requirements of the order.
- EN ISO 10204 3.1: This type of certificate states that the products supplied have been inspected and tested by an independent third-party inspection agency, and that the results of these tests meet the requirements of the order.
- EN ISO 10204 3.2: This certificate is similar to the 3.1 certificate, but it also includes the results of specific additional tests that have been witnessed by the independent third-party inspection agency.
In summary, the differences between the various types of EN ISO 10204 certificates are based on the level of testing and inspection performed, and the involvement of independent third-party inspection agencies.