AISI 904L stainless steel strip
High nickel, molybdenum and copper: resists acids and pitting corrosion.
Description
AISI 904L (EN 1.4539, X1NiCrMoCu25-20-5) is a highly alloyed super-austenitic stainless steel: around 25% nickel, 20% chromium, 4–5% molybdenum and a copper addition. Its very low carbon and rich chemistry make it suitable for highly corrosive environments, particularly sulphuric and phosphoric acid, high-chloride waters and conditions where stress corrosion cracking is a risk. It is used in chemical and petrochemical plant, desalination, pollution control, marine components and watchmaking. 3S supplies 904L precision strip in the annealed 2R/BA condition, as strip, narrow strips, spools and sheets from 0.05 to 0.70 mm.
Properties
- Excellent resistance to sulphuric and phosphoric acid
- High resistance to pitting and stress corrosion cracking
- Stable, non-magnetic austenitic structure
- Very low carbon, good weldability
Supply
| Parameter | Range | Notes |
|---|---|---|
| Thickness | Annealed 0.05 – 0.70 mm | Other thicknesses on request |
| Width | 3 – 1250 mm | Slitting with sheared or deburred edges |
| Finishes | Annealed 2R / BA • Work‑hardened 2H | Calibrated mechanical properties |
| Formats | Strip • Narrow strips • Spools • Sheets | Sheets cut to size up to 1000 mm |
| Spools | From 15 kg to 1500 kg | ID 50–400 mm • traverse or parallel winding |
Tolerances according to EN ISO 9445 or customer specification. 3.1 certificates on request.
Frequently asked questions
Request a quoteWhen does it make sense to upgrade from 316L to 904L?
Is 904L available in thin gauges?
How can I get a quote?
Tell us the alloy, finish, thickness, width, edge and format (strip/narrow strip/spool) and we will send you a quick quotation.