Available forms
- Seamless and welded pipe
- Fittings and flanges
- Plate, sheet and coil
- Round bar and forgings
- Fasteners and machined items
SP-13 / 904L
904L for aggressive process environments.
904L is a high-alloy austenitic stainless steel developed for demanding corrosion conditions. We supply piping, plate, bar, forgings and fasteners with verified chemistry, heat treatment, PMI and the supplementary tests required by the project.
Request a technical quotationMaterials & grades
- UNS N08904
- EN 1.4539
- Matching weld-compatible products
- Solution-annealed condition
- Project-specific dimensions
Standards
- ASTM A312
- ASTM A403 / A182
- ASTM A240
- ASTM A276 / A479
- EN 10088 and project specifications
Quality assurance
Documented from maker to delivery.
Testing and inspection are coordinated against the purchase specification, approved procedures and inspection plan.
- PMI and chemistry verification
- Solution-annealing records
- Mechanical testing
- Corrosion testing when specified
- Dimensional and surface inspection
- EN 10204 3.1 / 3.2 certification
Applications
Built around service conditions.
UNS N08904 and EN 1.4539 products for sulphuric-acid, chloride and chemical-processing applications.
Sulphuric-acid service
Chemical and pharmaceutical plants
Pulp and paper
Pollution-control equipment
Seawater and chloride-bearing systems
Technical enquiries
Send the specification.
Include size, grade, standard, quantity, testing, coating or inspection requirements and delivery location.