N08811 is top-tier solid-solution austenitic Fe-Ni-Cr heat-resistant alloy bright bar, upgraded from N08810 (800H) with mandatory total Al+Ti ≥0.85% for MX carbonitride dispersion strengthening, coarse-grain non-magnetic FCC microstructure after high-temperature solution treatment, optimized for creep service 760~980℃.

Chemical element content (%)

Specification：1.00~300.00mm

Application:It is mainly used to manufacture high-temperature radiant tubes for ethylene cracking furnaces, pressure core rods for hydrogen reforming converters, medium-high temperature heat exchange load-bearing shafts for solar thermal power stations, sulfur-resistant high-temperature flange flanges for waste incineration, internal pins for power plant reheaters, chloride-free dry heat fasteners for coal gasification, low-temperature lining support bars for gas turbines, large carburizing/nitriding furnace tooling, high-temperature hot air circulation valve bodies, standard parts for high-temperature dry heat petrochemical reforming equipment, etc.
Widely applied in complete ethylene petrochemical cracking plants, coal-to-hydrogen chemical facilities, solar thermal medium-high temperature dry heat power generation systems, waste heat incineration environmental flue systems, ultra-supercritical thermal power high-temperature steam circulating equipment, large industrial heat treatment furnaces, gas hot air machinery and coal chemical sulfur-containing dry heat reactor plants.

Core Advantages Over Competitors

1. High quality stability: Full closed-loop production with dual spectral & metallographic inspection strictly control C, Cr, Ni, Al, Ti and maintain Al+Ti ≥0.85%. Uniform coarse grain after solution treatment delivers consistent creep rupture strength for mass production of cracking & solar thermal high-pressure components.

2. Excellent surface quality: High-precision cold drawing & centerless grinding bars free of scale, scratches and pits with flat smooth finish. Minimal dimensional shift after turning in soft annealed state, no secondary polishing required for precision pins.

3. Ultra-high dimensional accuracy: Precision rolling mills & automatic online detectors narrow tolerance band with tiny single-bar deviation and high batch uniformity, unifying component sizes during automatic mass production to raise finished yield.

4. Rich product variety: According to market demand and customer's special requirements, customized products are provided to meet the use requirements under various complex working conditions, providing customers with more choices.

5. Perfect after-sales service: The perfect after-sales service system can respond to customer needs and feedback in a timely manner. For problems encountered by customers during use, technical support and solutions are provided to customers quickly.

We mainly engage in cold heading wire, bar, peeled bar, and profiled bar; our products cover 11 series and more than 300 grades, and we continue to develop a variety of professional steels. We can provide all-round solutions such as cold heading finishing line manufacturing and high-precision bright bar customization, and provide one-stop procurement services and package procurement solutions for global customers. The website displays some grades. If you don’t have the grade you need, please contact us by phone or email.