Heavy Duty Cold Rolled Nickel Alloy Sheet Hastelloy C276 3mm for FGD Scrubbers

Flue Gas Desulfurization (FGD) wet scrubbers operate in some of the most aggressive corrosive environments in industrial engineering. The combination of acidic condensates, high chloride concentrations, elevated temperatures, and abrasive fly ash rapidly degrades standard stainless steels.

Our Heavy Duty Cold Rolled Hastelloy C276 Sheet in 3mm Thickness is a nickel-molybdenum-chromium-tungsten superalloy engineered to eliminate premature equipment failure. The substantial 3mm gauge balances robust structural rigidity with cold-forming flexibility, allowing EPC contractors and fabricators to line absorption vessels, construct internal baffles, and build inlet/outlet transition ducts with high confidence. Through controlled annealing and descaling, each sheet achieves a uniform microstructural grain boundary that resists intergranular carbide precipitation during welding, ensuring long-term operational uptime in coal-fired power stations, waste-to-energy plants, and chemical incineration scrubbers.

• Exceptional Pitting and Crevice Corrosion Resistance (High PREN): High molybdenum and chromium content reinforced with tungsten provides superior resistance to stagnant acid chloride solutions and severe localized attack in wet scrubber sumps.
• Superior Resistance to Wet Chlorine & Sulfuric Condensates: Remains virtually inert in hot sulfuric acid, sulfur dioxide gas streams, hypochlorites, and wet chlorine environments typical of acid gas scrubbing.
• High-Precision 3mm Cold Rolled Gauge Tolerance: Precision multi-roll cold rolling ensures uniform thickness cross-profile, superior flatness, and high surface finish, minimizing on-site fit-up time during vessel fabrication.
• Microstructural Stability & Superior Weldability: Optimized ultra-low carbon and silicon chemistry prevents detrimental intergranular precipitation in heat-affected zones (HAZ), maintaining full corrosion resistance post-welding without mandatory post-weld heat treatment.
• Robust Heavy-Duty Mechanical Strength: High tensile strength and proof yield combined with high ductility ensure the 3mm plate withstands extreme pressure fluctuations and turbulent gas-liquid dynamics.

• FGD Absorber Vessel Wall Linings: Used as protective cladding and structural inner shells to isolate structural steel from low-pH slurry and high-chloride washing liquor.
• Inlet & Outlet Ductwork: Resists wet/dry interface corrosion and acid dew point condensation where hot flue gas meets cooling water sprays.
• Mist Eliminator Vanes & Support Baffles: Ensures mechanical stability and erosion-corrosion resistance under high gas velocity and droplet impingement.
• Recirculation Spray Header Supports: Resists severe erosion-corrosion from abrasive lime/limestone slurry suspension.
• Chemical Incineration & Tail Gas Cleaning Units: Ideal for municipal waste incinerator scrubbers, hazardous chemical exhaust towers, and sulfuric acid recovery plants.

• Integrated Superalloy Manufacturing & Full Traceability: Changzhou DLX Alloy operates dedicated vacuum induction melting (VIM), electroslag remelting (ESR), and precision rolling lines, ensuring zero-defect metallurgy and full material heat traceability.
• Comprehensive Quality Assurance: Every batch of 3mm Hastelloy C276 sheet undergoes 100% PMI positive material identification, automated ultrasonic testing, dimensional verification, and intergranular corrosion screening.
• Custom Processing & Laser Cutting Capabilities: In-house high-power fiber laser cutting, waterjet profiling, edge beveling, and leveling equipment deliver ready-to-weld components directly to your assembly line.
• Reliable Industrial Scale & Supply: With an expansive manufacturing footprint and robust monthly production capacity exceeding 1,200 tons across special nickel and superalloys, we guarantee reliable project scheduling and flexible container load shipments.
• Dedicated Engineering Consultation: Our metallurgists and welding specialists provide full technical support on welding filler metal selection, forming radius recommendations, and corrosion rate modeling.

A: Wet FGD scrubber environments contain high concentrations of chlorides (often exceeding 20,000–50,000 ppm) combined with acidic sulfur dioxide condensation and elevated temperatures. Stainless steels such as 316L or duplex 2205 suffer rapid pitting, crevice attack, and chloride stress corrosion cracking in these conditions. Hastelloy C276’s high nickel-molybdenum-chromium-tungsten composition delivers unmatched chemical passivity, ensuring long service life without catastrophic wall thinning.

A: Hastelloy C276 exhibits excellent weldability using standard gas tungsten arc welding (GTAW/TIG) or gas metal arc welding (GMAW/MIG). Matching C276 filler metal is recommended. To preserve optimum corrosion resistance, maintain low heat input, use interpass temperatures below 100°C (212°F), and ensure adequate argon backing gas purge to protect the root pass from oxidation.

A: Yes. In addition to standard commercial dimensions (such as 4ft×8ft or 1500×3000mm), DLX Alloy provides precision cut-to-size services, custom perimeter punching, edge beveling for seam welding, and pre-curved segments tailored to your vessel shell diameter.

A: Sheets are interleaved with protective moisture-barrier paper or surface protective film, securely bound on reinforced wooden pallets or enclosed in export-grade fumigated wooden crates with desiccant packs to prevent transit scratching and sea-freight moisture corrosion.

A: For standard stock sizes, flexible trial quantities starting from 50–100 kg can be accommodated. For custom-rolled sheet batches or tailored fabrication drawings, typical production lead time ranges between 2 to 4 weeks depending on the total tonnage and processing specifications.