Material Selection & Assessment
Typical materials include carbon steels, low-alloy steels, stainless and duplex stainless steels, nickel alloys, heat-resistant steels and other project-specific materials.
- Material specifications and selection
- Material substitution and equivalent grades
- Material compatibility and corrosion resistance
- Sour-service suitability (NACE MR0175 / ISO 15156)
- Certification, identification and traceability
Heat Treatment
Review and monitoring cover treatment procedures, temperature cycles, thermocouple placement, heating and cooling rates, holding times, calibrated equipment and time-temperature records.
- Post-weld heat treatment (PWHT)
- Annealing and normalizing
- Quenching and tempering
- Solution treatment
- Stress relieving
Chemical & Surface Treatments
QSC provides consultancy on chemical cleaning, pickling, passivation and other surface treatments, in line with environmental requirements and material compatibility.
Sour Service (NACE MR0175 / ISO 15156)
Assessment of materials for oil and gas equipment in H2S-containing environments to NACE MR0175 / ISO 15156: material and hardness requirements, heat-treatment condition, welding and weld hardness, and review of the material documentation.
Metallurgical Testing
- Metallography: macro and micro examination
- Hardness testing
- Chemical composition analysis
- Tensile and impact testing
- Material identification
- Review of laboratory reports
Where tests require an accredited laboratory, QSC coordinates and reviews the testing; it does not operate the laboratory itself.
Failure Analysis & Technical Investigation
- Fracture investigation
- Material degradation and corrosion
- Welding defects
- Premature failure and overheating
- Inappropriate heat treatment
- Hydrogen-related degradation
- Root-cause analysis
Material Certification
- EN 10204 inspection documents (2.2, 3.1, 3.2)
- Material traceability and heat numbers
- Positive Material Identification (PMI)
- Material record review
- Evaluation of compliance with specified requirements
Codes & Standards
EN material standards
Typical Deliverables
- Material assessment reports
- Sour-service compliance reviews
- Heat-treatment review records
- Failure analysis reports
- Material certificate reviews
- PMI reports
Industries Served