A material test certificate (MTC) links the parts you receive to the material they were made from. EN 10204 defines the main types, and the differences matter when your customer or your quality system requires traceability.
| Type | What it is |
|---|---|
| 2.1 | Declaration of compliance with the order — no test results |
| 2.2 | Test report — results from non-specific testing of the manufacturer's production |
| 3.1 | Inspection certificate — specific tests on the delivered lot, validated by the manufacturer's authorised inspection representative who is independent of production |
| 3.2 | As 3.1, and also validated by the purchaser's representative or an independent third party |
What a brass certificate typically shows
- Alloy designation and the standard it conforms to
- Chemical composition of the lot (copper, zinc, lead and other elements)
- Mechanical properties where specified, such as tensile strength or hardness
- Lot or heat number for traceability, and the manufacturer's details
Practical tips
Certificates belong to a material lot, so they must be requested when the material is purchased. Ask for the type you need at the time you place the order — it is difficult to produce a 3.1 certificate retrospectively. If you need a 3.2 certificate, tell your supplier early so that inspection can be arranged.
We provide material certificates and inspection reports on request. Learn more about our checks on the quality and testing section of the products page.
Have a drawing or specification in mind? Send it to our export desk and we will respond with a clear quotation.