N06690 is high-chromium Ni-Cr-Fe solid-solution austenitic nickel alloy bright bar, high-Cr upgraded version of N06600, molybdenum-free, non-age-hardenable, single-phase non-magnetic FCC matrix. Ultra-high 27~31% Cr forms dense Cr₂O₃ scale, optimized for nuclear high-temperature water SCC resistance, oxidizing chemicals and high-temperature sulfidation service.

Chemical element content (%)

Specification：1.00~300.00mm

Application:It is mainly used to manufacture heat exchange core rods for PWR nuclear steam generators, non-magnetic high-pressure fasteners for primary loop facilities, tail gas reheater pipes for nitric acid production, reaction pins for HF-HNO₃ pickling equipment, internal bars for hot caustic evaporators, load-bearing flanges for sulfur-containing dry gasification flues, high-temperature dry flue components for waste incineration, support shafts for 1000℃ solar thermal drying equipment, anti-corrosion structural parts for radioactive waste treatment, mass precision pins processed by Swiss CNC lathes, etc.
Widely applied in complete PWR nuclear power supporting equipment, nitric & hydrofluoric acid anti-corrosion chemical plants, chlor-alkali caustic evaporation lines, coal gasification high-temperature dry heat units, waste incineration high-temperature flue systems, solar thermal medium-high temperature drying facilities and radioactive waste disposal equipment industries.

Core Advantages Over Competitors

1. High quality stability: Full closed-loop production with dual online spectral & metallographic inspection strictly control C, Cr, Ni with uniform chromium distribution. Segregation-free single austenite matrix delivers consistent performance of hot water SCC resistance and nitric acid corrosion resistance for stable mass supply of nuclear & chemical high-end anti-corrosion components.

2. Excellent surface quality: High-precision cold drawing & centerless grinding lines produce smooth bars free of scale, scratches and pits. Bright finish after turning in soft annealed state eliminates secondary polishing for precision appearance parts.

3. Ultra-high dimensional accuracy: Precision rolling mills and automatic online dimension 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.