API TR 938-C is a technical report focused on the use of duplex stainless steels in the oil refining industry. It serves as a practical reference for engineers and technical teams that need background on material selection and application considerations in refining service. As a specialist document, it is especially useful when evaluating corrosion resistance, fabrication suitability, and long-term performance in process equipment and related refinery systems. For buyers comparing technical references, API TR 938-C offers focused support for informed review rather than prescriptive requirements.

Purpose of API TR 938-C

The purpose of API TR 938-C is to provide technical background and interpretive guidance on duplex stainless steels in refinery applications. As an API Technical Report, it is best understood as a reference document that supports engineering judgment, material assessment, and internal technical review. The 3rd edition reflects a mature industry reference point for teams that need context when comparing material options, reviewing project specifications, or evaluating suitability for oil refining environments. It helps translate material behavior into practical decision support.

How API TR 938-C may be used

API TR 938-C may be used by engineering, integrity, reliability, inspection, and procurement teams involved in refinery projects or maintenance planning. It is commonly relevant when duplex stainless steels are being considered for process equipment, piping, or other refinery hardware where material performance matters. Technical reviewers can use it to support studies, supplier discussions, and specification checks, while project teams may use it to align material choices with service conditions and lifecycle expectations. It is a useful reference for informed internal evaluation.

Why API TR 938-C matters

API TR 938-C matters because material decisions in refining can affect reliability, safety, maintenance effort, and total lifecycle cost. Having a focused technical report on duplex stainless steels helps teams compare options with greater consistency and reduces ambiguity during design reviews, procurement, and field support. For organizations managing refinery assets, the document can contribute to clearer technical communication between engineering, inspection, and operations functions. API TR 938-C is most valuable when a decision needs background evidence rather than a simple yes-or-no requirement.

• Duplex stainless steel use in refinery service
• Technical background for material selection
• Engineering and project review support
• Inspection, integrity, and reliability reference
• Procurement and specification alignment
• Oil refining industry application focus