The Mill Test Certificate, or also known as Material Test Certificate, plays an important role in quality control of materials in several industries, including manufacturing, construction and oil and gas. But often many users find it difficult to understand the certificates.
This article introduces you to material test certificates, explains their meaning and outlines issues you may encounter with your manufacturer or supplier.
The Mill Test Certificate (MTC), also known as a material test report, is a document that verifies the chemical and physical properties of a material. Usually, the report is written on paper and contains the approval of the factory quality control along with a special stamp of the material test certificate.
The test standards and contents of the report usually correspond to the factory's production standards or the customer's specific requirements. The report includes detailed information about the material's composition, including type, quality and specification, as well as the results of various tests the material was subjected to, such as tensile strength, yield strength and more.
The material test report or rolling mill test report/certificate is usually provided by the manufacturer before the products leave the factory.
However, sometimes a quality control third party may issue the report, depending on specific requirements. For example, the manufacturer may only meet the requirements contained in an EN10204 3.1 certificate. If you (as a customer) ask for an EN10204 3.2 certificate, you need a third party with sufficient qualifications to issue the certified material test report.
There are two main points as to why the material testing certificate is important..
It is worth noting that test methods and content vary depending on the materials being tested.
For steel products, an MTC typically includes the following test standards..
The report should include detailed test results for each test, along with all necessary approvals from the plant quality control department.
Below are some of the common problems that can occur with the report..
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Mill test reports are an important document that verifies the chemical and physical properties of a material and provides detailed information on the manufacturer's test methods.
But relying solely on the material test certificates issued by the manufacturer is not always sufficient to ensure the accuracy and reliability of the material. In some cases, it may be wise to enlist the help of a third party to verify the results.