APPLICATION ENGINEERING GUIDE
Welded block heat exchangers for corrosive service
Material selection starts with the actual fluid and operating envelope. This guide does not claim a completed alloy-service project.
- Existing unit and duty
- Collect the existing materials, fluid analysis, temperatures and inspection history. Include contaminants, cleaning chemicals and intermittent operating conditions.
- Problem to assess
- Determine the documented damage or compatibility concern before selecting a replacement alloy. A nominal fluid name is insufficient for material selection.
- Scope and material
- Consider available stainless steels, titanium or other corrosion-resistant alloys only after reviewing suitability and fabrication requirements. Include panel seals and other wetted parts.
- Verification
- Review material specifications, traceability and project-specific corrosion evidence. Define further testing or specialist assessment where the available evidence is insufficient.
- Result to establish
- Confirm the agreed material basis and inspection plan. Corrosion life or improvement cannot be inferred from the alloy name alone.
Send Your Process Data for Heat Exchanger Selection
Provide both fluids, flow rates, inlet and outlet temperatures, operating and design pressures, allowable pressure drop and material requirements. For a replacement, include the nameplate and arrangement drawing.