Material Test Certificates Explained


What is a material certificate?

A Material Certificate, or MTC, is a document that certifies the chemical and physical properties of a material. It is also known as a Mill Certificate or TEST CERTIFICATE.

The MTC is an important document for manufacturers and suppliers, as it guarantees the quality of the material. The certificate includes the material’s chemistry and heat treatment, as well as its physical properties such as density, strength, and hardness.

BS EN 10204 or DIN EN 1024 is a European standard that describes the types of Inspection documentation requirements for supply of metallic products.

It can be used for non-metallic products also as agreed during ordering. In EN10204, following certification types are given:

  1. Type 2.1
  2. Type 2.2
  3. Type 2.3 (incorporated in Type 3.1 certificate)
  4. Type 3.1
  5. Type 3.2

What is the Difference Between 2.2 and 3.1 Material Certificate?

A 2.2 Test Certificate is a Test Report as a compliance statement based on previous test results data & the actual material is not tested. The manufacturer certify that the material supplied under a Type 2.2 certificate will meet the requirements. Type 2.2 certificate is validated by the manufacturer.

On the other hand, a 3.1 certificate supply the material with actual test results. The product manufacturer certify the test certificate and declare that the product shall meet the material standards requirements. Type 3.1 certification is a Inspection Certificate validated by the manufacturer authorized inspector (Inspector is independent from manufacuting department).

A summary of inspection documents as per EN10204 for Type 2.1, Type 2.2, Type 3.1 & Type 3.2 are given in the below table.

EN 10204 3.1 certificate

Difference Between 3.1 and 3.2 Material Certification?

Both 3.1 & 3.2 certificate are inspection certificates providing the compliance of the product supplied with actual material test results.

A 3.2 certificate is validated by the manufacturer authorized, inspection personnel e.g., QC Engineer and there is no role of manufacturing/ production department in the certificate authorization. The inspector can be purchased authorized inspector or a inspector from regulatory body.

These above personnel declare that the product is in compliance with the minimum specified requirements of the material standard. The product under 3.2 certification has been tested under quality requirements.

On the other hand, a 3.1 certificate supply the material with actual test results. The product manufacturer certify the test certificate and declare that the product shall meet the material standards requirements. Type 3.1 certification is a Inspection Certificate validated by the manufacturer authorized inspector (Inspector is independent from manufacuting department).

Difference Between 2.1 and 2.2 Certification?

A type 2.1 material certificate is a certificate of compliance (Known as COC) or simply declaration of compliance.

A type 2.1 certificate is a document certified/validated by the manufacturer that it shall meet the the requirements without any actual test. There is no mention of test results on the test certificate.

A Type 2.2 certificate is a test report. It is a document in which the manufacturer certified that the product supplied comply with the requirements of the purchase order. The result of non-specific test are provided in the test report instead of the actual material results.

Difference Between 2.1 and 3.1 Certification?

A 3.1 material certificate is a document that verifies the chemical and physical properties of a material. The certificate is issued by an accredited testing laboratory and includes information on the material’s composition, mechanical properties, and thermal properties. A 3.1 material certificate is essential for ensuring that materials meet safety and performance requirements.

A type 2.1 material certificate is a certificate of compliance (Known as COC).

A type 2.1 certificate is a document certified by the manufacturer that it shall meet the the requirements without any actual test. There is no mention of test results on the test certificate.

What is a 3.1 Material Certificate?

A 3.1 material certificate is a document that verifies the chemical and physical properties of a material. The certificate is issued by an accredited testing laboratory and includes information on the material’s composition, mechanical properties, and thermal properties. A 3.1 material certificate is essential for ensuring that materials meet safety and performance requirements.

A 3.1 Certificate ensure the the material supplied is tested to confirm the minimum requirements. The test is carried out on the same material that is supplied to the purchaser.

There are two types of Type 3.1 certification based on the issuing authority level:

  • Type 3.1
  • Type 3.2

What is a 3.2 Material Certificate?

In a type 3.2 certificate, both an inspector, independent of the manufacturer certification department, appointed by the manufacturer and also an inspector appointed by the purchaser or an inspector named in the official regulations, confirms that the supplied products meet the requirements specified in the purchase order, including the test results details.

A 3.2 material certificate is a document that verifies the chemical and physical properties of a specific material. This certificate is often used by manufacturers and suppliers to ensure that the materials they are using meet specific industry standards. The 3.2 designation refers to the fact that the document has been created in accordance with European standard EN 10204.

What is a 2.1 Material Certificate?

A type 2.1 material certificate is a certificate of compliance (Known as COC).

A type 2.1 certificate is a document certified by the manufacturer that it shall meet the the requirements without any actual test. There is no mention of test results on the test certificate.

So, the manufacturer takes the responsibility that the material is having the minimum required mechanical & chemical properties, for example but there are no actual test conducted on the supplied material.

What is a 2.2 Material Certificate?

When the manufacturer certifies that the respective products meet the requirements specified by the purchaser in the order, he issues certificates of compliance containing test results based on other inspections and tests.

A Type 2.2 certificate is a test report. It is a document in which the manufacturer certified that the product supplied comply with the requirements of the purchase order. The result of non-specific test are provided in the test report instead of the actual material results.

EN 10204 type 3.1 certificate example

An EN 10204 type 3.1 certificate is a document that is used to certify the quality of a product. This type of certificate is usually issued by the manufacturer and it indicates that the product has been manufactured according to certain standards.

The certificate also provides information about the product, such as its dimensions and weight. An EN 10204 type 3.1 certificate can be used to demonstrate the quality of a product to potential buyers or suppliers. An example certificate for 3.1 certification is given below.


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