AISI 441 stainless steel strip
Ti-Nb stabilised ferritic, for high temperatures and exhaust systems.
Description
AISI 441 (EN 1.4509, X2CrTiNb18) is a ferritic stainless steel with about 18% chromium, low carbon and stabilised with titanium and niobium. Dual stabilisation improves weldability and resistance to intergranular corrosion and gives good resistance to oxidation at high temperature. It is magnetic, nickel-free and has lower thermal expansion than austenitic grades: this is why it is widely used in exhaust systems, heat shields and high-temperature components, often as an alternative to more expensive austenitic alloys. 3S supplies AISI 441 precision strip annealed 2R/BA, as strip, narrow strips from 3 mm, coils and sheets from 0.05 to 0.70 mm.
Properties
- Titanium and niobium stabilised: good weldability
- Oxidation resistance at high temperature
- Nickel-free: more stable cost
- Magnetic, low thermal expansion
Applications for this grade
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 quoteWhat is the difference between AISI 441 and AISI 430?
Is AISI 441 suitable for exhaust systems?
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.