Metallic products-Types of inspection documents
This standard defines the various inspection documents (commonly called material certificates) that manufacturers must provide to confirm compliance with order requirements for metallic products, including titanium, steel, aluminum, etc.
It applies across industries like aerospace, petrochemical, medical, marine, and automotive.
Types of Inspection Documents (Certificates)
|
Type |
Document Name |
Issued By |
Based On |
Witnessed/Verified By |
|
2.1 |
Declaration of compliance |
Manufacturer |
No testing |
Not witnessed |
|
2.2 |
Test report |
Manufacturer |
Non-specific tests |
Not witnessed |
|
3.1 |
Inspection certificate 3.1 |
Manufacturer’s authorized representative |
Specific inspection/test results from thesame batch |
Notified Body or customer can audit results |
|
3.2 |
Inspection certificate 3.2 |
Manufacturer + Independent inspector |
Specific test results |
Witnessed or validated by a third party (e.g., TPI, customer rep, or regulatory body) |
Key Differences Explained
2.1 – Declaration of Compliance
States that the material meets the requirements
No actual test results
Not traceable to a batch
Used for low-risk applications
2.2 – Test Report
Contains typical test results (e.g., tensile, chemical)
Tests may not be from the actual delivered material
Often used for commercial-grade or non-critical applications
3.1 – Inspection Certificate
Includes actual results of mechanical, chemical, dimensional tests
Traceable to the specific heat and batch delivered
Tests performed on sample material from the same batch
Most common type for industrial and aerospace customers
Example:
A Ti Grade 5 tube delivery would have a 3.1 certificate showing the actual chemical composition, tensile strength, elongation, etc., from the batch delivered.
3.2 – Dual-Party Inspection Certificate
Like 3.1, but verified by a third party
Often required in critical sectors: oil & gas, nuclear, aerospace
Common third-party inspectors: Lloyd’s, TÜV, DNV, SGS, or end-user's QA team
Typical Content of a 3.1 / 3.2 Certificate
Manufacturer info
Product description
Dimensions and condition
Grade / alloy
Heat number and batch number
Chemical composition
Tensile strength / Yield strength / Elongation
Hardness (if applicable)
NDT results (if required)
Standards applied (e.g., ASTM B338, DIN 65079)
Authorized signatures
Related Standards
EN 10204--Types of inspection documents
ISO 10474--Similar, but for steel products mainly
ASTM A788--Alternative certificate requirement (USA)
AS9100 / ISO 13485--Require 3.1/3.2 for aerospace/medical
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