As the only alloys that can reliably withstand the combined attack of sulfuric acid, hydrochloric acid, hydrofluoric acid and chlorides in power plant exhaust systems, both alloys require no post-weld heat treatment to maintain full corrosion resistance. With over 20 years of production experience, Emily PIPE supplies precision-manufactured Hastelloy C276/C22 seamless pipes, tubes and bars that meet the strictest international power industry standards.
| Item | Details |
|---|---|
| Executive Standards | 1. International Material Standards: ASTM B622/B574 (C276), ASTM B619/B574 (C22), ASME SB622/SB574
2. Power Piping Standards: ASME B31.1 (Power Piping), ASME B31.3 3. Nuclear Power Standards: ASME Section III, NQA-1 4. Pressure Vessel Standards: ASME Section I (Power Boilers), ASME Section VIII Div.1 5. Testing Standards: ASTM E8, ASTM G48 (Pitting/Crevice), ASTM E243 (Eddy Current) |
| Material Grade | 1. Hastelloy C276 (UNS N10276): W.Nr.2.4819, NiMo16Cr15W
2. Hastelloy C22 (UNS N06022): W.Nr.2.4602, NiCr21Mo14W 3. Equivalent Grades: NS3304/NS3308 (China), Hastelloy C276/C22 (USA) 4. Special Grades: Nuclear grade; heavy-wall grade; precision ground grade |
| Chemical Composition (Weight %) | C276: Ni≥57, Cr14.5-16.5, Mo15.0-17.0, W3.0-4.5, Fe4.0-7.0, C≤0.010
C22: Ni≥56, Cr20.0-22.5, Mo12.5-14.5, W2.5-3.5, Fe2.0-6.0, C≤0.015 Note: Higher Cr in C22 improves oxidizing resistance; higher Mo/W in C276 enhances reducing acid resistance |
| Mechanical Properties (Annealed State) | C276: Tensile 690-900MPa, Yield≥310MPa, Elongation≥40%, HB180-230
C22: Tensile 690-930MPa, Yield≥310MPa, Elongation≥40%, HB180-235 High-Temp (650℃): Both maintain ≥480MPa tensile strength Max Service Temp: 650℃ continuous |
| Dimensional Tolerance | 1. Seamless Pipes/Tubes: Ø6-50mm±0.15mm; Ø50-150mm±0.3mm; Wall±0.08-0.12mm
2. Bars/Rods: Ø6-50mm±0.3mm; Ø50-150mm±0.5mm; Ø150-300mm±0.8mm 3. U-Bend Tubes: Bend radius±0.5mm; Ovality≤3% of OD 4. Length Tolerance: ±2mm (1-12m); custom lengths up to 18m |
| Why This Material Is Used in Electric Power Industry | 1. Unmatched FGD System Corrosion Resistance:
– Withstands the “corrosion cocktail” of H₂SO₄, HCl, HF and chlorides in flue gas scrubbers – C276: Preferred for scrubber slurry zones (chloride>500ppm, 80-100℃) with superior erosion-corrosion resistance – C22: Ideal for stack liners and mist eliminators (oxidizing conditions, >100℃) – Corrosion rate <0.1mm/year vs. >5mm/year for 316L stainless steel 2. Superior Waste-to-Energy Performance: – Resists high-temperature acidic gases (HCl, SO₂, HF) from municipal solid waste combustion – C22 outperforms C276 in oxidizing flue gases above 150℃ – Eliminates frequent tube failures that cause unplanned plant shutdowns 3. Proven Nuclear Power Reliability: – ASME Section III certified for nuclear reactor auxiliary systems – Excellent resistance to boric acid, radioactive wastewater and hydrogen embrittlement – Used in steam generator secondary sides and radioactive waste treatment systems 4. Excellent Seawater Cooling Resistance: – Immune to chloride-induced SCC in seawater and concentrated brine – Resists biofouling and erosion-corrosion in coastal power plant cooling systems 5. Superior Cost-Effectiveness: – While initial cost is 5-8x higher than 316L, 10-20x longer service life reduces total cost of ownership by 60-70% – Eliminates costly annual maintenance and replacement of stainless steel components |
| Application Scenarios and Corresponding Customers | 1. Flue Gas Desulfurization (FGD) Systems:
– Applications: Scrubber spray headers, slurry piping, mist eliminator supports, stack liners, heat exchanger tubes – Customers: GE Power, Siemens Energy, Mitsubishi Heavy Industries, State Grid, China Energy Investment 2. Waste-to-Energy and Biomass Power: – Applications: Boiler superheater tubes, flue gas piping, scrubber internals, heat exchanger tubes – Customers: Babcock & Wilcox, Hitachi Zosen, China Everbright Environment, Shanghai Electric 3. Nuclear Power Generation: – Applications: Chemical and volume control systems, radioactive waste piping, heat exchanger tubes, fastener components – Customers: Westinghouse, Areva, Rosatom, China National Nuclear, China General Nuclear 4. Gas Turbine Combined Cycle: – Applications: HRSG acid dew point components, flue gas piping, heat exchanger tubes – Customers: General Electric, Siemens, Mitsubishi Heavy Industries, Ansaldo Energia 5. Coastal Power Plant Cooling: – Applications: Seawater intake piping, heat exchanger tubes, condenser tubes, cooling water systems – Customers: DuPont Water Solutions, Veolia, SUEZ, local power generation groups |
| Customer Requirements in This Industry | 1. Performance Requirements:
– Mixed Acid Resistance: Must withstand H₂SO₄+HCl+HF+chloride combinations – Localized Corrosion Resistance: Must be immune to pitting, crevice corrosion and SCC – Erosion-Corrosion Resistance: Must resist slurry impingement in FGD scrubbers – Radiation Resistance: Must withstand neutron radiation in nuclear applications – Thermal Fatigue Resistance: Must withstand cyclic heating and cooling 2. Quality and Compliance Requirements: – ASME Code Compliance: Must meet ASME Section I, III and B31.1 requirements – NACE Certification: Must provide NACE MR0175 certification for sour service – Nuclear Quality Assurance: Must comply with NQA-1 for nuclear applications – Full Traceability: Must provide 100% traceability from raw material to finished product – Third-Party Inspection: Must allow inspection by TÜV, SGS, BV or authorized organizations 3. Manufacturing Requirements: – Precision Dimensional Tolerances: Must meet tight tolerances for proper fit and assembly – Surface Quality: Must have smooth, defect-free surfaces to prevent corrosion initiation – Internal Quality: Must be free from inclusions, porosity and segregation (100% UT/ET verified) – Consistent Quality: Must have uniform chemical composition across all batches – Cleanliness Requirements: Must meet strict cleanliness standards for nuclear applications |
| Common Related Products in This Industry | 1. Hastelloy C276/C22 Seamless Pipes/Tubes: For high-pressure process piping and heat exchangers
2. Hastelloy C276/C22 Welded Pipes: Cost-effective for large-diameter FGD and flue gas piping 3. Hastelloy C276/C22 Bars/Rods: For manufacturing fasteners, valve stems, shafts and structural components 4. Hastelloy C276/C22 Fittings: Elbows, tees, reducers, flanges and couplings for power plant piping systems 5. Hastelloy C276/C22 Forgings: Custom forgings including valve bodies, pump casings and header components 6. Hastelloy C276/C22 Fasteners: Bolts, nuts, screws, studs and washers for severe corrosion service 7. Hastelloy C276/C22 Welding Materials: ERNiCrMo-4 (C276) and ERNiCrMo-10 (C22) electrodes/wires 8. Hastelloy C276/C22 Sheets and Plates: For manufacturing scrubber liners, tanks and vessels 9. Hastelloy C276/C22 Machined Components: Precision-machined valves, fittings and heat exchanger parts 10. Custom Fabricated Assemblies: Pre-fabricated FGD spray headers and piping spools |
| Why Choose Us (Emily PIPE) | 1. 20+ Years of Power Industry Alloy Expertise: We have supplied Hastelloy products to over 100 power plants worldwide
2. NACE & ASME Nuclear Certified Facility: Our production line meets the strictest nuclear quality standards 3. Full-Process Quality Control: We implement 100% ultrasonic, eddy current and hydrostatic testing on all products 4. Complete International Certifications: Our products hold ASTM, ASME, PED, NACE and nuclear certifications 5. Advanced Customization Capability: We can produce custom sizes, lengths and end processing per your drawings 6. Global Power Supply Chain Experience: We have extensive experience delivering to major power companies worldwide 7. Professional Technical Support: Our metallurgical engineers provide expert material selection guidance 8. One-Stop Solution: We provide complete solutions from raw material supply to pre-fabricated assemblies |
| Supplementary Industry Information | 1. Comprehensive Test Reports: Each batch comes with a full MTR including chemical analysis, mechanical properties and NDT results. Corrosion test reports available upon request
2. Full Material Traceability: Every product has a unique heat number and complete traceability documentation 3. Value-Added Processing: We offer precision cutting, CNC bending, welding, end processing and surface finishing 4. Prototype Development Support: We support small batch prototype orders with fast turnaround times 5. Emergency Response Service: We provide 24/7 emergency service for unplanned power plant shutdowns 6. Market Growth: The global Hastelloy market for power generation is projected to grow at a CAGR of over 7% through 2030, driven by stricter environmental regulations 7. Sustainability Commitment: All our products are manufactured using sustainable practices and are 100% recyclable |
| Packaging | 1. Plastic Caps: All pipe/bar ends are protected with heavy-duty polyethylene caps with internal sealing rings
2. Waterproof Film: Each product is individually wrapped in waterproof and anti-corrosion film 3. Bundle Packing: Products of the same size are bundled with steel straps and wooden spacers 4. Wooden Case: Bundles are packed in sturdy fumigated wooden cases with steel reinforcement 5. Export Standard Packing: All packaging complies with international export standards and ISPM 15 regulations 6. Marking: Each package is clearly marked with product specifications, heat number, quantity and destination |
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