Verify the alloy against the purchase specification
Material testing confirms chemical composition, structure or mechanical properties. The method, sampling location, frequency and report format should be defined in the RFQ and control plan rather than assumed after production begins.
Testing resources
- Optical emission spectrometer for chemical-composition verification
- Ferrite measurement where specified for duplex or austenitic castings
- Brinell and Rockwell hardness testing
- Tensile and impact testing on the specified heat-representative or product sample
- Salt-spray or other corrosion-related testing when required by the applicable specification
- Qualified external or specialist testing when the project requires a method outside the routine in-house route
Coupons, samples and reports
Cast-on coupons, heat-representative samples or specimens removed from a component affect tooling and process planning. State the required sample form, acceptance criteria, third-party witness and material-certificate type at quotation stage.