Material selection begins with service conditions
General corrosion-resistant stainless casting for industrial and sanitary component families. Final grade selection should be based on the governing specification, environment, temperature, required properties, weld or repair restrictions and downstream heat treatment.
Cast and wrought designation
CF8 is an austenitic stainless casting grade commonly cross-referenced with the 304 family. The cast grade is controlled by its applicable casting specification (for example ASTM A351 / A743 / A744, as applicable to the project); wrought 304 is controlled by different product standards. Use the family name for orientation, not as an automatic material substitution.
Manufacturing considerations
The alloy affects melting practice, shell interaction, heat treatment, machining behavior, distortion risk and surface-treatment compatibility. These factors are reviewed together before quotation.
Information to include in the RFQ
- Exact grade and governing ASTM, EN or customer specification
- Required heat-treatment condition
- Mechanical-property, corrosion or ferrite requirements
- NDT and material-test requirements
- Repair restrictions
- Certification and traceability documents
Avoid substitution by name alone
Cast and wrought designations, national standards and customer specifications are not always interchangeable. The purchase order and drawing should identify the controlling material standard rather than relying only on a familiar commercial name.