Material Test Certificate (EN 10204 3.1 / 3.2)
A document issued by the manufacturer of a metallic product that confirms the product complies with the order requirements and reports the results of specific test results.
A Material Test Certificate (MTC) — also known as a Mill Test Certificate, Mill Certificate, or "3.1" — is governed by EN 10204. It documents the chemical composition, mechanical properties, and other test results of a material, typically a metallic product like steel, alloy, or aluminum.
3.1 vs 3.2 Certificates
EN 10204 defines several certificate types. The most common are: **2.1** (statement of compliance, no test results), **2.2** (test report from non-specific testing), **3.1** (specific testing, issued by the manufacturer’s authorized inspection representative independent of production), and **3.2** (specific testing, validated by an independent inspector or the buyer’s representative).
How Certificate Management Software Helps
In manufacturing, materials flow continuously and each batch arrives with its own MTC. A certificate management platform links each MTC to the specific batch, product, and sub-assembly it covers — so the documentation pack for a finished product (or a customer audit) can be assembled in seconds rather than reconstructed from the shared drive.
Who needs this?
Manufacturers, fabricators, and end-users of metallic products in regulated industries — pressure equipment, structural steel, piping, automotive, aerospace.