What Does Mill Test Mean?
A mill test is a procedure used to evaluate the quality and traceability of steel products from the manufacturing process to the final end user. It is reported in the form of a certificate that summarizes a variety of data including steel concentrations, processing activities and chemical and physical examination results, thus allowing one to verify the steel's quality.
Corrosionpedia Explains Mill Test
The results of a mill test are reported to end-users via a mill's test certificate (MTC). According to industry best practices and standards, such a certificate should contain the following information, among others:
- Name of the steel
- Final test results
- Steel dimensions, including diameter, thickness and length
- Steel grade
- Chemical analysis composition results
- Mechanical test properties
Two main types of certificates are used: MTC EN 10204 3.1 (the most common, issued by manufacturers) and MTC EN 10204 3.2 (less common, issued by authorized inspection agencies).