Super Austenitic Stainless Steel - Extreme Corrosion Resistance for Harsh Environments
- High-performance alloy with superior corrosion and mechanical properties
- Non-magnetic in annealed state, ideal for electronics and sensitive applications
- Common grades include 904L, 254SMO, and AL-6XN
- Enhanced resistance to pitting and crevice corrosion via Cr, Ni, Mo, and N
- Used in oil & gas, marine, chemical, and pharmaceutical sectors
Supplied by Zhongbo against a confirmed source, grade and specification — request a quote with your material, standard, quantity, required certificates and destination.
✅ Alloy composition includes elevated levels of chromium (Cr), nickel (Ni), molybdenum (Mo), and nitrogen (N), delivering exceptional resistance to pitting and crevice corrosion.
✅ Popular grades:
• 904L: Cr 19–23%, Ni 23–28%, Mo 4–5%, Cu 1–2%, N ≤ 0.10
• 254SMO: Cr 20–22%, Ni 18–20%, Mo 6–6.5%, N 0.18–0.25
• AL-6XN: Cr 20–22%, Ni 24–26%, Mo 6–7%, N 0.10–0.20
✅ Non-magnetic in annealed state; slight magnetism may occur after cold working.
✅ Applications:
• Oil & Gas: Downhole tubing, valves, pipelines
• Chemical Processing: Heat exchangers, reactors
• Marine: Saltwater-exposed components
• Pharmaceuticals: High-purity, corrosion-resistant equipment
✅ Microstructure features stabilized austenite matrix for strength, ductility, and enhanced corrosion protection.
✅ Contact us for datasheets, supply volumes, or technical consultation.
Specifications
Packaging & Shipping
Ports of Shipment: Tianjin Port, Qingdao Port, Shanghai Port
Lead Time: 15–20 working days
Packing Options:
✔️ Standard seaworthy packing: plastic film wrapping + woven bag/Hessian cloth, palletized if required
✔️ Customized labels and packing on request
✔️ Supports air freight, sea freight (FCL/LCL), and truck delivery
Zhongbo Steel ensures safe and reliable packaging to protect your products during transport and storage.
Sourcing & documentation
Zhongbo confirms the manufacturer or mill, material grade, origin, applicable standard, batch documentation and inspection scope with you before order acceptance.
What to include in your enquiry
- Application and required material / grade
- Dimensions, class or specification
- Applicable standard
- Quantity and delivery schedule
- Required certificates and inspection
- Destination port
Certificates & inspection
Mill or manufacturer certificates and batch documentation are provided according to the confirmed source. Third-party or pre-shipment inspection (SGS, Bureau Veritas, Intertek or a buyer-appointed agency) can be arranged when included in the order. See test reports & inspection.
Request a quote
Send your material, grade, standard, quantity and required documents, and we’ll reply with a quotation.
Get a QuoteTechnical documents
Download the product catalogue, or contact us for certificates and test reports.
Product catalogue (PDF)You May Also Need
Pit-Resistant Stainless Steel – High-Performance Alloys for Corrosive Environments
- Superior resistance to pitting corrosion in chloride-rich and marine environments
- High PREN values (typically > 40) with added molybdenum and nitrogen
- Available grades: 254SMO, AL-6XN, 904L, Super Duplex 2507, etc.
Steel Plate: Carbon and Stainless Steel Plates for Structural, Boiler, and Marine Applications
- Thickness: Sheet (0.2–4mm), Slab (4–20mm), Thick Plate (20–60mm), Special Thick Plate (60–115mm)
- Standards: GB/T709, ASTM A36, JIS G4051, DIN EN10083, ASTM A29M, SS400, A572, Q235, S235JR
- Tolerances: OD ±0.15–0.25 mm, Thickness ±10%, Length ±5 mm
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- Full range of steel pipe types: seamless, welded (ERW/LSAW/SSAW), alloy, stainless, galvanized, square & rectangular
- Outer diameter range: 13.7 mm to 3500 mm
- Wall thickness from 0.5 mm to 50 mm
