BS EN 10204:2004 is a British Standard that is related to different types of inspection documents for steel products. It has 4 types for EN 102024, 2.1, 2.2, 3.1, and 3.2, the latter two types are commonly used in steel pipe and plates products.

So we will mainly advise the key difference between en 10204 3.1 and 2.2.

What are EN 10204 mean?

BS EN 10204:2004 is a British Standard that replaced standard BS EN 10204:1991 and specifies the different types of test files supplied to the buyer, in conformity to the request of the order, for the delivery of all metallic products e.g. plates, sheets, bars, tubes, forgings, castings, no matter what production method they use.

Certification of steel plates rolled in Europe is generally to EN 10204. The actual certificate will depend on the plate offered but will either be en 10204 3.1 or 3.2. En 10204 3.11 or 3.2 MTC means that the actual plate or heat sold will have been tested and a Mill Test Certificate (MTC) will be in accordance with the plate.

MTC is Mill Test Certificate, it combines all the specifications of the steel pipe products. Including dimensions, sizes, weight, chemical composition, mechanical strength, heat treatment status, test result, traceability, etc.

The standard information of the EN 10204 MTC

Type of certificate and standard (example EN 10204 3.1 or EN 10204 3.2)

Manufacturer name
Product name and dimensions
The quantity covered by the certificate (example: tons, with heat numbers)
Heat numbers and batch numbers (physically shown on the product as well)
Final test result
Dimensional measurements, to check compliance with allowed tolerances (example, for steel pipes: diameter, wall thickness, length, straightness)
Material grade and applicable specification, including results of chemical and mechanical tests
Results of additional tests, like hydrostatic, ultrasounds (UT), hardness, impact test, magnetic particles, metal graphic result, etc.
Addenda is useful to appraise the full features of the product

en 10204 3.1

en 10204 type 3.1 requirements

Different documents types of EN 10204

EN 10204 contains 4 types of documents types, 2.1, 2.2, 3.1, and 3.2. Type 2.1 and 2.2 are validated by the manufacturer. En 10204 3.1 and 3.2 are not only validated by the manufacturer.

Certificate TypeDocument TypeDocument ContentDocument Validated By
EN10204 2.1Declaration of Compliance with the OrderStatement of compliance with the orderThe Mill
EN10204 2.2Test ReportStatement of compliance with the order, with an indication of results of the non-specifics inspectionThe Mill
EN10204 3.1Inspection Certificate 3.1Statement of compliance with the order, with an indication of results of specific inspectionThe Mill’s authorized inspection representative who is independent of the manufacturing department
EN10204 3.2Inspection Certificate 3.2Statement of compliance with the order, with an indication of results of specific inspectionThe mill’s authorized inspection representative who is independent of the manufacturing department and either the purchasers authorized inspection representative or the inspector designated by official regulation

Differences between EN 10204 3.1 and 3.2 for the MTC

The EN 10204 3.1 certification is a certificate issued by the mill which declares that the plates are in accordance with the specification and includes the test results. And it is independent of the production department since it is an additional inspection based on the standard quality tests of the mill. The Mill Test certification only includes the name of the manufacturer.

EN 10204 3.2 certification is more strict and the certificate is prepared both by the mill’s test department and independent 3rd party inspectors such as TUV or Lloyds Register, SGS. The certificate announces that the plates are compliant with the related en 10204 specification and the mill test certificate is included.

En 10204 3.2 certificate costs higher than en 10204 3.1 Not only the manufacturer test department but also a completely independent part. A third-party inspector or the personal, buyer, or government representative also has the right to verify the test results.

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You can click here to download:  EN 10204 standard.pdf

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