Laboratory Testing: Mechanical, Chemical and Metallurgical Analysis
Mechanical, chemical and metallurgical laboratory testing coordinated through accredited partner labs, interpreted against your specification.
Some questions cannot be answered on site. Where a specification calls for measured values and not inspection findings, such as tensile strength, alloy composition, microstructure or coating thickness, the sample has to go to a laboratory under controlled conditions. itmad coordinates laboratory testing through ISO/IEC 17025 accredited partner laboratories, covering mechanical, chemical, metallurgical and contamination analysis. itmad operates across the Middle East, Asia and Europe.
How the service works
The test certificate is issued by the laboratory under its own accreditation, which is what a client or auditor will want to see. itmad provides everything around it: choosing the right test method for the question being asked, specifying the sampling so that the result represents the item and not one convenient corner of it, managing the chain of custody, and interpreting what the numbers mean against the specification.
That division matters more than it sounds. Most testing disputes do not come from measurement error, because laboratories are good at measuring. They come from the wrong method being specified, a sample that was not representative, or a result compared against the wrong acceptance criterion. Those are the failures that this service exists to prevent.
What can be tested
Mechanical testing covers tensile, yield and elongation, Charpy and Izod impact including low-temperature testing, bend and flattening, hardness on prepared specimens, and fracture toughness where the code requires it. Chemical analysis covers full alloy composition against the material specification, positive material identification, corrosion testing including intergranular and pitting resistance, and analysis of process fluids or deposits.
Metallurgical examination covers microstructure, grain size, phase balance, case depth, weld macro examination, and fractography to establish how and why a component failed. Coating, contamination and cleanliness work covers coating thickness and adhesion, surface contamination analysis, cleanliness against specified limits, and identification of unknown residues or deposits.
Sampling
Where a sample is taken determines what its result means. A tensile specimen cut from an unrepresentative location, or a chemical sample taken from a surface that has been ground, gives a valid measurement of the wrong thing. Sampling is planned against the governing standard and documented, including location, orientation and preparation, so that a result can be defended if it is challenged. Where an item cannot be sampled destructively, itmad says so and identifies a non-destructive alternative that answers the question.
When laboratory testing is commissioned
Typical occasions are verification of incoming material where the mill certificate is questioned or missing; weld procedure and welder qualification testing; failure investigation where the mechanism cannot be established from site examination; product conformity assessment against a standard or client specification; investigation of corrosion, cracking or premature degradation in service; confirmation of heat treatment condition; and resolution of a dispute between supplier and purchaser over material properties.
What the client receives
The accredited laboratory's test certificate, issued under its own accreditation, and a sampling record that identifies location, method and chain of custody. The client also receives the test method and standard applied and the conditions under which the test was carried out, an assessment of the results against the acceptance criteria in the specification, and a technical interpretation, including what the result indicates about cause where relevant. Where a result does not settle the question, itmad recommends further testing.
Related work
Laboratory testing is often commissioned alongside damage assessment and expert reports, where the failure mechanism has to be established, and alongside factory and incoming material inspection, where a certificate needs verifying. Where the answer can be obtained on site, by portable hardness testing, in-situ material identification or ferrite measurement, itmad says so and does not send a sample away.
Frequently asked questions
What does itmad do in laboratory testing?
itmad coordinates testing through ISO/IEC 17025 accredited partner laboratories and provides what surrounds the test: method selection, sampling specification, chain of custody and interpretation against the specification. The test certificate is issued by the laboratory under its own accreditation.
Why do testing disputes arise?
Rarely from measurement error. They come from the wrong method being specified, a sample that was not representative, or a result compared against the wrong acceptance criterion, and this service exists to prevent those failures.
What categories of test are available?
Mechanical testing, chemical analysis, metallurgical examination, and coating, contamination and cleanliness work. They include tensile, impact, hardness, alloy composition, corrosion testing, microstructure, fractography, coating thickness and surface contamination analysis.
Why does sampling matter?
Where a sample is taken determines what its result means, and a specimen from an unrepresentative location measures the wrong thing. Sampling is planned against the governing standard and documented, including location, orientation and preparation.
When is laboratory testing commissioned?
To verify incoming material, qualify welding procedures and welders, investigate failures and in-service degradation, assess product conformity, confirm heat treatment, and settle disputes over material properties between supplier and purchaser. In each case the aim is a result that can be defended against the specification.
What if the item cannot be cut for a sample?
itmad says so and identifies a non-destructive alternative that answers the question instead. Where the answer can be obtained on site, such as by portable hardness testing, itmad recommends that and does not send a sample away.