Hastelloy C276 (UNS N10276) pipe for chemical industry is the industry-standard nickel-molybdenum-chromium-tungsten superalloy pipe, renowned for its universal corrosion resistance to the most aggressive chemical environments. Specially engineered for severe corrosion service, it provides unmatched durability in strong acids, chloride solutions, oxidizing and reducing media where stainless steels and other nickel alloys fail rapidly.
As the most versatile corrosion-resistant alloy for chemical processing, Hastelloy C276 pipe requires no post-weld heat treatment to maintain full corrosion resistance, making it ideal for field fabrication and complex piping systems. With over 20 years of production experience, Emily PIPE supplies precision-manufactured Hastelloy C276 seamless and welded pipes that meet the strictest international chemical industry standards.
| Item | Details |
|---|---|
| Executive Standards | 1. International Material Standards: ASTM B622 (Seamless Pipe), ASTM B619 (Welded Pipe), ASTM B626 (Welded Tube), ASME SB622, ASME SB619, ASME SB626
2. Chemical Piping Standards: ASME B31.3 (Process Piping), ASME B31.4 (Liquid Petroleum Pipelines) 3. Pressure Vessel Standards: ASME Section VIII Div. 1, PED 2014/68/EU 4. Testing Standards: ASTM E8, ASTM E23, ASTM E10, ASTM G48 (Pitting/Crevice Corrosion), ASTM E243 (Eddy Current) 5. Quality Management Standards: ISO 9001, ISO 14001, OHSAS 18001 |
| Material Grade | 1. Main Grade: Hastelloy C276 (Nickel-Molybdenum-Chromium-Tungsten Superalloy, Severe Corrosion Chemical Grade)
2. International Designations: UNS N10276, W.Nr. 2.4819, Alloy C276, NiMo16Cr15W 3. Equivalent Grades: NS3304 (China), Hastelloy C276 (USA), Nicrofer 5716 (Germany), fully compatible with all global chemical manufacturing standards 4. Special Grades: Seamless grade for high-pressure applications; ultra-low carbon grade for maximum weldability; precision grade for tight tolerance applications |
| Chemical Composition (Weight %) – Chemical Grade | 1. Nickel (Ni): 57.0% minimum (base element for overall corrosion resistance)
2. Molybdenum (Mo): 15.0 – 17.0 (primary element for reducing acid and pitting resistance) 3. Chromium (Cr): 14.5 – 16.5 (for oxidizing acid resistance) 4. Tungsten (W): 3.0 – 4.5 (enhances pitting and crevice corrosion resistance) 5. Iron (Fe): 4.0 – 7.0 (for improved formability and cost-effectiveness) 6. Cobalt (Co): ≤2.5 7. Carbon (C): ≤0.010 (ultra-low content to prevent intergranular corrosion) 8. Silicon (Si): ≤0.08 9. Manganese (Mn): ≤1.00 10. Phosphorus (P): ≤0.025 11. Sulfur (S): ≤0.010 Note: The balanced combination of molybdenum, chromium and tungsten provides the unique universal corrosion resistance that makes C276 the benchmark for severe chemical service |
| Mechanical Properties (Annealed State) | 1. Tensile Strength (Room Temperature): 690 – 900 MPa
2. 0.2% Yield Strength (Room Temperature): ≥310 MPa 3. Elongation (δ5): ≥40% (excellent formability for complex piping systems) 4. Reduction of Area: ≥50% 5. Hardness (HB): 180 – 230 6. Tensile Strength (200℃): ≥580 MPa 7. Tensile Strength (400℃): ≥480 MPa 8. Modulus of Elasticity: 205 GPa 9. Thermal Expansion Coefficient: 11.2 × 10⁻⁶ /℃ (20-100℃) 10. Maximum Continuous Service Temperature: 650℃ |
| Dimensional Tolerance (Chemical Precision Grade) | 1. Seamless Pipes:
– Outer Diameter 6mm – 50mm: ±0.15mm – Outer Diameter 50mm – 150mm: ±0.3mm – Outer Diameter 150mm – 300mm: ±0.5mm – Wall Thickness 0.5mm – 3mm: ±0.08mm – Wall Thickness 3mm – 10mm: ±0.12mm 2. Welded Pipes: – Outer Diameter 10mm – 200mm: ±0.2mm – Wall Thickness 0.8mm – 8mm: ±0.10mm 3. U-Bend Pipes: – Bend Radius Tolerance: ±0.5mm – Ovality at Bend: ≤3% of outer diameter 4. Length Tolerance: – Fixed Length (1m – 12m): ±2mm – Custom Length up to 18m available |
| Why This Material Is Used in Chemical Industry (Detailed) | 1. Unmatched Universal Corrosion Resistance:
– Hastelloy C276 is the only commercially available alloy that resists corrosion from virtually all aggressive chemical media, including strong oxidizing and reducing acids, bases, salts, chlorides and organic solvents. – Provides exceptional resistance to chloride-induced pitting, crevice corrosion and stress corrosion cracking (SCC)—the three most common failure modes in chemical processing equipment. – Resists corrosion from sulfuric acid (up to 80% concentration at boiling point), hydrochloric acid (up to 20% concentration at 100℃), hydrofluoric acid and phosphoric acid at elevated temperatures. 2. No Post-Weld Heat Treatment Required: – The ultra-low carbon content eliminates carbide precipitation in weld heat-affected zones, retaining 100% corrosion resistance after welding without post-weld heat treatment. – This reduces fabrication costs by 30-40% and shortens project timelines, making it ideal for field fabrication and large-scale chemical plant construction. – Eliminates the risk of distortion and residual stress associated with post-weld heat treatment of large piping systems. 3. Excellent Performance Across Wide Temperature Range: – Maintains excellent corrosion resistance and mechanical properties from cryogenic temperatures (-253℃) up to 650℃. – Resists oxidation at elevated temperatures, making it suitable for both low-temperature and high-temperature chemical processes. – Excellent thermal stability with no harmful phase precipitation even after long-term high-temperature exposure. 4. Superior Fabricability and Weldability: – Excellent formability allows for bending, flanging and forming into complex shapes without cracking or defects. – Excellent weldability with all conventional welding processes used in chemical plant construction, including TIG, MIG and submerged arc welding. – Good machinability compared to other high-performance nickel alloys, reducing machining time and tool wear. 5. Proven Long-Term Reliability: – Over 50 years of proven performance in the most severe chemical processing applications with an excellent safety record. – Extensively tested and qualified by all major chemical and pharmaceutical companies worldwide. – Service life of 15-20 years or more in most chemical environments, significantly longer than stainless steels and other alloys. 6. Cost-Effective Solution: – While initial material cost is higher than stainless steel, the significantly longer service life and reduced maintenance costs result in a much lower total cost of ownership. – Eliminates the need for frequent equipment replacement and downtime, improving plant productivity and profitability. |
| Application Scenarios and Corresponding Customers (Detailed) | 1. Chlor-Alkali Industry:
– Applications: Brine piping systems, chlorine gas piping, hydrochloric acid storage and transfer lines, electrolyzer components, caustic soda piping and heat exchangers – Customers: Dow Chemical, Olin Corporation, Westlake Chemical, Shin-Etsu Chemical, Solvay, BASF, Sinopec 2. Sulfuric Acid Industry: – Applications: Acid transfer lines, heat exchangers, absorption towers, pump and valve components, acid storage tanks and piping systems – Customers: DuPont, BASF, Bayer, ExxonMobil Chemical, Shell Chemical, PetroChina 3. Pharmaceutical and Fine Chemical Industry: – Applications: Reactor piping, heat exchanger tubes, solvent transfer lines, acid and base handling systems, clean process piping and filtration systems – Customers: Pfizer, Novartis, Merck, Roche, Johnson & Johnson, AstraZeneca, Bayer Healthcare 4. Petrochemical Industry: – Applications: Crude oil distillation units, catalytic cracking units, hydrocracking units, sour gas processing systems, acid gas removal units and heat exchangers – Customers: ExxonMobil, Shell, BP, Chevron, TotalEnergies, Saudi Aramco, Sinopec 5. Fertilizer and Agrochemical Industry: – Applications: Ammonia production units, urea production units, phosphoric acid plants, sulfuric acid plants, fertilizer storage and transfer systems – Customers: Yara International, Nutrien, Mosaic, CF Industries, OCP Group, Sinochem 6. Environmental Protection Industry: – Applications: Flue gas desulfurization (FGD) systems, wastewater treatment plants, acid neutralization systems, scrubber piping and stack liners – Customers: Siemens Energy, GE Power, Mitsubishi Heavy Industries, DuPont Water Solutions, Ecolab 7. Pulp and Paper Industry: – Applications: Pulp digesters, bleaching systems, chlorine dioxide generators, acid handling systems and wastewater treatment piping – Customers: International Paper, Kimberly-Clark, Procter & Gamble, Stora Enso, UPM-Kymmene |
| Customer Requirements in This Industry (Detailed) | 1. Performance Requirements:
– Universal Corrosion Resistance: Must resist corrosion from all process chemicals encountered during operation for the entire service life of the equipment. – Pitting and Crevice Corrosion Resistance: Must be immune to pitting and crevice corrosion in chloride-containing environments. – Stress Corrosion Cracking Resistance: Must resist stress corrosion cracking under combined tensile stress and corrosive environment. – Temperature and Pressure Resistance: Must maintain sufficient strength and corrosion resistance across the entire operating temperature and pressure range. – Weld Corrosion Resistance: Must retain full corrosion resistance after welding without post-weld heat treatment. 2. Quality and Compliance Requirements: – Material Standard Compliance: Must meet all requirements of applicable ASTM, ASME and international material standards. – ASME B31.3 Compliance: Must comply with the ASME B31.3 process piping code for chemical plant construction. – Full Material Traceability: Must provide 100% traceability from raw material ore to finished product, including all processing steps and test results. – Material Certification: Must provide comprehensive material test reports (MTR) with each shipment, including chemical analysis, mechanical properties and corrosion test results. – Third-Party Inspection: Must allow third-party inspection by reputable organizations such as TÜV, SGS and BV. 3. Manufacturing Requirements: – Precision Dimensional Tolerances: Must meet strict dimensional tolerances to ensure proper fit and assembly in chemical plant piping systems. – Surface Quality: Must have a smooth, defect-free surface to prevent corrosion initiation and ensure proper sealing. – Internal Quality: Must be free from internal defects such as inclusions, porosity and segregation, verified by 100% non-destructive testing. – Consistent Quality: Must have uniform chemical composition and mechanical properties across all batches and throughout the entire cross-section of the pipe. – Cleanliness Requirements: Must meet strict cleanliness standards to prevent contamination of chemical processes. 4. Supply Chain Requirements: – Reliable Delivery: Must provide on-time delivery to support chemical plant construction and maintenance schedules. – Emergency Response: Must be able to respond quickly to emergency orders and unplanned shutdowns. – Small Batch Capability: Must be able to produce small batch quantities for prototype development and maintenance parts. – Global Supply Capability: Must be able to supply to chemical plants worldwide with consistent quality and lead times. – Inventory Management: Must offer inventory management solutions to reduce customer inventory costs. 5. Cost Requirements: – Competitive Pricing: Must offer competitive pricing while maintaining the highest quality standards. – Low Total Cost of Ownership: Must provide lower total cost of ownership through longer service life, reduced maintenance and fewer replacement costs. – Value-Added Services: Must offer value-added services such as cutting, bending, welding and machining to reduce customer fabrication costs. |
| Common Related Products in This Industry | 1. Hastelloy C276 Seamless Pipes: Available in various sizes and wall thicknesses for high-pressure chemical applications
2. Hastelloy C276 Welded Pipes: Cost-effective solution for large-diameter and low-to-medium pressure applications 3. Hastelloy C276 U-Bend Pipes: Custom bent pipes for chemical heat exchangers and condensers 4. Hastelloy C276 Fittings: Elbows, tees, reducers, flanges and couplings for chemical piping systems 5. Hastelloy C276 Forgings: Custom forgings including valve bodies, pump casings, flanges and pressure vessel components 6. Hastelloy C276 Fasteners: Bolts, nuts, screws, studs and washers for severe corrosion service 7. Hastelloy C276 Welding Materials: Electrodes, wires and filler metals specifically formulated for chemical industry welding applications 8. Hastelloy C276 Machined Components: Precision-machined parts including valves, pumps, fittings and heat exchanger components 9. Hastelloy C276 Sheets and Plates: Used for manufacturing tanks, vessels, heat exchangers and structural components 10. Custom Fabricated Assemblies: Pre-fabricated piping spools, heat exchangers and pressure vessels |
| Why Choose Us (Emily PIPE) | 1. 20+ Years of Chemical Alloy Expertise: We have been supplying high-performance Hastelloy C276 pipe products to the global chemical industry for over 20 years, with deep understanding of the unique requirements of severe corrosion service applications.
2. Dedicated Chemical Grade Production Line: We operate a dedicated clean production line for chemical-grade Hastelloy C276 pipes, ensuring strict control over chemical composition, mechanical properties and surface quality. 3. Full-Process Quality Control: We implement a comprehensive quality control system from raw material inspection to finished product testing, including 100% ultrasonic testing, eddy current testing and hydrostatic testing for all chemical-grade pipes. 4. Complete International Certifications: Our products meet all major international standards and hold certifications including ASTM, ASME, PED and ISO 9001, ensuring compliance with the strictest global chemical project requirements. 5. Advanced Customization Capability: We can produce custom sizes, lengths, wall thicknesses and end processing according to your drawings and technical specifications, including complex U-bend and coiled pipes. 6. Global Chemical Supply Chain Experience: We have extensive experience supplying to major chemical companies worldwide, with reliable logistics partners ensuring on-time delivery to chemical plants anywhere in the world. 7. Professional Technical Support: Our team of metallurgical engineers and corrosion specialists provides expert guidance on material selection, design optimization and fabrication techniques for severe corrosion applications. 8. One-Stop Solution: We provide complete chemical piping solutions from material selection and component manufacturing to assembly and testing, reducing your supply chain complexity and costs. |
| Supplementary Industry Information | 1. Comprehensive Test Reports: Each batch comes with a full Material Test Report (MTR) including chemical composition analysis, mechanical properties testing, heat treatment records and non-destructive test results. Corrosion test reports are available upon request.
2. Full Material Traceability: Every pipe comes with a unique heat number and complete traceability documentation from raw material ore to finished product, meeting the strictest chemical industry requirements. 3. Value-Added Processing: We offer comprehensive value-added services including precision cutting, CNC bending, welding, end processing and surface finishing, providing ready-to-install chemical piping components. 4. Prototype Development Support: We support small batch prototype orders with fast turnaround times to help you accelerate product development and testing for new chemical processes. 5. Emergency Response Service: We provide 24/7 emergency response service for unplanned chemical plant shutdowns, with expedited production and shipping available. 6. Market Growth: The global Hastelloy C276 market for chemical industry is projected to grow at a CAGR of over 6% through 2030, driven by increasing demand for corrosion-resistant materials in chemical processing and environmental protection applications. 7. Sustainability Commitment: All our products are manufactured using sustainable practices and are 100% recyclable, helping you meet your environmental targets and comply with global sustainability regulations. |
| Packaging | 1. Plastic Caps: All pipe ends are protected with heavy-duty polyethylene caps with internal sealing rings to prevent contamination and damage during transportation
2. Waterproof Film: Each pipe is individually wrapped in waterproof and anti-corrosion film to protect against moisture and rust 3. Bundle Packing: Pipes of the same size are bundled together with steel straps and wooden spacers to prevent contact and damage 4. Wooden Case: Bundles are packed in sturdy fumigated wooden cases with steel reinforcement to prevent damage during international shipping 5. Export Standard Packing: All packaging complies with international export standards and ISPM 15 regulations for wooden packaging 6. Marking: Each package is clearly marked with product specifications, heat number, quantity, gross weight, net weight and destination information |