What is a mill test report?
Abbreviation: MTR
Related Terms
Certificate of Conformance(CoC / C of C)
A certificate of conformance (CoC) is a document from a supplier declaring that a product meets the required specification or standard. Often required alongside an MTR for regulated industries.
Heat Number
A heat number is a unique identifier assigned to a batch of metal produced in a single melting operation. It links the material to its mill test report for full traceability.
ASTM(ASTM)
ASTM International publishes voluntary consensus standards for materials, products, and testing. ASTM grades like A36, A108, and A500 define the chemical and mechanical requirements for steel products.
Steel Distributor
A steel distributor purchases steel from mills and resells it to manufacturers, fabricators, and machine shops. Also called a steel service center, they stock common grades and sizes for fast delivery.
Metal Service Center
A metal service center is a distributor that buys metal in large quantities from mills and resells it in smaller quantities with value-added processing such as cutting, sawing, and slitting.