Key principle: Material grade is one part of hygienic design. Product chemistry, cleaning method, surface finish, weld quality, drainage and maintenance matter alongside the alloy designation.
Where SUS304 is commonly considered
SUS304 is widely used for many food-contact applications, but suitability must be confirmed for the product and cleaning regime.
- Review acidity, salt and exposure time.
- Specify contact and non-contact zones.
- Confirm surface finish and fabrication quality.
When SUS316 may be evaluated
Higher chloride exposure, aggressive cleaning or corrosive ingredients may justify evaluating SUS316 for selected parts.
- Do not upgrade every component without a corrosion review.
- Consider seals, fasteners and weld areas.
- Document the exact material scope in the equipment list.
Hygienic design beyond material
Cleanability depends on accessible geometry, drainage, removable parts, weld treatment and validated cleaning procedures.
- Avoid product traps and inaccessible joints.
- Plan cleaning access.
- Confirm food-safety compliance against the destination and application.
What to specify in a quotation
List product-contact material, surface finish, certificates required, cleaning chemicals and any market-specific requirement.
What to Send Before Equipment Selection
Provide raw material, finished product, target throughput, package format, workshop dimensions, voltage, utilities, project stage and any local standard. These inputs allow a configuration discussion without inventing specifications.