Hastelloy C276 (UNS N10276) bar for chemical industry is the industry-standard nickel-molybdenum-chromium-tungsten superalloy bar, renowned for its universal corrosion resistance to the most aggressive chemical environments. Specially engineered for manufacturing critical components in severe corrosion service, it provides unmatched durability for pumps, valves, fittings and structural parts where stainless steels and other alloys fail rapidly.
As the most versatile corrosion-resistant alloy bar for chemical processing, Hastelloy C276 requires no post-weld heat treatment to maintain full corrosion resistance, making it ideal for fabricating complex equipment and field repairs. With over 20 years of production experience, Emily PIPE supplies precision-manufactured Hastelloy C276 bars in all standard and custom sizes that meet the strictest international chemical industry standards.
| Item | Details |
|---|---|
| Executive Standards | 1. International Material Standards: ASTM B574 (Bar and Rod), ASTM B564 (Forgings), ASME SB574, ASME SB564, DIN 17752, EN 2.4819
2. Chemical Piping Standards: ASME B31.3 (Process Piping), ASME B31.4 3. Pressure Vessel Standards: ASME Section VIII Div. 1, PED 2014/68/EU 4. Testing Standards: ASTM E8, ASTM E23, ASTM E10, ASTM G48, ASTM E1444 (Magnetic Particle), ASTM A388 (Ultrasonic) 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) 4. Special Grades: Forging grade for heavy components; ultra-low sulfur grade for maximum weldability; precision ground 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 (improves formability and cost-effectiveness) 6. Cobalt (Co): ≤2.5 7. Carbon (C): ≤0.010 (ultra-low content prevents intergranular corrosion) 8. Silicon (Si): ≤0.08 9. Manganese (Mn): ≤1.00 10. Phosphorus (P): ≤0.025 11. Sulfur (S): ≤0.010 |
| 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 forging and machining) 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. Hot Rolled Bars:
– Diameter 6mm-50mm: ±0.3mm – Diameter 50mm-150mm: ±0.5mm – Diameter 150mm-300mm: ±0.8mm 2. Cold Drawn Bars: – Diameter 6mm-30mm: ±0.03mm – Diameter 30mm-80mm: ±0.05mm – Diameter 80mm-150mm: ±0.10mm 3. Precision Ground Bars: – Diameter 6mm-100mm: ±0.01mm 4. Rectangular/Square Bars: – Width/Thickness: ±0.05mm for ≤50mm; ±0.10mm for >50mm 5. Length Tolerance: ±2mm for 1m-6m; custom lengths up to 12m available 6. Straightness Tolerance: ≤0.5mm/m for precision grade; ≤0.3mm/m for ultra-precision grade |
| Why This Material Is Used in Chemical Industry (Detailed) | 1. Unmatched Universal Corrosion Resistance:
– Resists corrosion from virtually all aggressive chemicals: sulfuric acid (up to 80% boiling), hydrochloric acid (up to 20% at 100℃), hydrofluoric acid, phosphoric acid, caustic soda and chlorine gas – The only commercial alloy that withstands the combined attack of oxidizing and reducing acids, eliminating the need for multiple material specifications – Provides exceptional resistance to chloride-induced pitting, crevice corrosion and SCC—the three leading causes of chemical equipment failure 2. No Post-Weld Heat Treatment Required: – Ultra-low carbon content eliminates carbide precipitation in weld heat-affected zones, retaining 100% corrosion resistance after welding – Reduces fabrication costs by 30-40% and shortens project timelines, critical for chemical plant turnarounds and emergency repairs – Eliminates distortion and residual stress associated with post-weld heat treatment of large components 3. Superior Fabricability and Machinability: – Excellent hot forgeability allows production of complex shapes such as pump impellers, valve bodies and flanges without cracking – Good machinability compared to other high-nickel alloys, reducing tool wear and machining time by 20-30% – Compatible with all conventional welding processes used in chemical plant construction 4. Wide Temperature Range Performance: – Maintains excellent corrosion resistance and mechanical properties from cryogenic temperatures (-253℃) up to 650℃ – Suitable for both low-temperature chemical processes and high-temperature reaction vessels – Excellent thermal stability with no harmful phase precipitation even after 100,000+ hours of service 5. Proven Long-Term Reliability: – Over 50 years of proven performance in the most severe chemical applications with an excellent safety record – Service life of 15-20+ years, 3-5 times longer than 316L stainless steel in aggressive environments – Extensively tested and qualified by all major global chemical and pharmaceutical companies |
| Application Scenarios and Corresponding Customers (Detailed) | 1. Chlor-Alkali Industry:
– Applications: Pump shafts, valve stems, electrolyzer components, agitator shafts, fasteners, flanges and structural parts – Customers: Dow Chemical, Olin Corporation, Westlake Chemical, Shin-Etsu Chemical, Solvay, BASF, Sinopec 2. Sulfuric Acid Industry: – Applications: Acid pump components, valve bodies, heat exchanger tube sheets, agitators, fasteners and piping supports – Customers: DuPont, BASF, Bayer, ExxonMobil Chemical, Shell Chemical, PetroChina 3. Pharmaceutical and Fine Chemical Industry: – Applications: Reactor agitators, valve components, pump shafts, fasteners, mixing blades and process equipment parts – Customers: Pfizer, Novartis, Merck, Roche, Johnson & Johnson, AstraZeneca, Bayer Healthcare 4. Petrochemical Industry: – Applications: Sour gas processing components, hydrocracking unit parts, pump and valve components, heat exchanger parts and fasteners – Customers: ExxonMobil, Shell, BP, Chevron, TotalEnergies, Saudi Aramco, Sinopec 5. Fertilizer and Agrochemical Industry: – Applications: Phosphoric acid plant components, pump shafts, valve bodies, agitators, fasteners and structural parts – Customers: Yara International, Nutrien, Mosaic, CF Industries, OCP Group, Sinochem 6. Environmental Protection Industry: – Applications: Flue gas desulfurization (FGD) components, scrubber internals, wastewater treatment equipment parts and fasteners – Customers: Siemens Energy, GE Power, Mitsubishi Heavy Industries, DuPont Water Solutions, Ecolab 7. Pulp and Paper Industry: – Applications: Bleaching system components, pump shafts, valve bodies, agitators, fasteners and digester parts – 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 for the entire equipment service life – Pitting/Crevice Corrosion Resistance: Must be immune to localized corrosion in chloride-containing environments – Stress Corrosion Cracking Resistance: Must withstand combined tensile stress and corrosive media without failure – Mechanical Strength: Must maintain sufficient strength across the full operating temperature and pressure range – Weldability: 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 ASTM B574, ASME SB574 and applicable project specifications – ASME B31.3 Compliance: Must comply with process piping code for chemical plant construction – Full Material Traceability: Must provide 100% traceability from raw material ore to finished product – Material Certification: Must provide comprehensive MTRs including chemical analysis, mechanical properties and NDT results – Third-Party Inspection: Must allow inspection by TÜV, SGS, BV or other authorized organizations 3. Manufacturing Requirements: – Precision Dimensional Tolerances: Must meet tight tolerances to ensure proper fit and assembly of components – Surface Quality: Must have a smooth, defect-free surface to prevent corrosion initiation – Internal Quality: Must be free from inclusions, porosity and segregation, verified by 100% ultrasonic testing – Consistent Quality: Must have uniform chemical composition and mechanical properties across all batches – Machinability: Must be easily machinable using conventional CNC equipment 4. Supply Chain Requirements: – Reliable Delivery: Must meet tight project schedules and plant turnaround deadlines – Emergency Response: Must provide expedited production and shipping for unplanned shutdowns – Small Batch Capability: Must produce small quantities for prototype development and maintenance parts – Global Supply Capability: Must deliver to chemical plants worldwide with consistent quality – Inventory Management: Must offer stock holding solutions to reduce customer inventory costs 5. Cost Requirements: – Competitive Pricing: Must offer fair pricing while maintaining the highest quality standards – Low Total Cost of Ownership: Must provide long service life and reduced maintenance costs – Value-Added Services: Must offer cutting, machining and heat treatment to reduce customer fabrication costs |
| Common Related Products in This Industry | 1. Hastelloy C276 Round Bars: Diameters 6mm-300mm in annealed and solution treated conditions
2. Hastelloy C276 Square/Rectangular Bars: Custom sizes for structural applications and machine components 3. Hastelloy C276 Hexagonal Bars: Used for manufacturing nuts, bolts, screws and other threaded fasteners 4. Hastelloy C276 Forgings: Custom forgings including pump bodies, valve casings, flanges and impellers 5. Hastelloy C276 Fasteners: Bolts, nuts, screws, studs and washers for severe corrosion service 6. Hastelloy C276 Welding Materials: Electrodes, wires and filler metals for chemical industry welding 7. Hastelloy C276 Machined Components: Precision-machined shafts, pins, valves and pump parts 8. Hastelloy C276 Sheets and Plates: Used for manufacturing tanks, vessels and heat exchangers 9. Hastelloy C276 Pipes and Tubes: Used for chemical process piping and heat exchangers 10. Custom Fabricated Assemblies: Pre-fabricated pump and valve components |
| Why Choose Us (Emily PIPE) | 1. 20+ Years of Chemical Alloy Expertise: We have been supplying high-performance Hastelloy C276 bar products to the global chemical industry for over 20 years, with deep understanding of severe corrosion service requirements
2. Dedicated Chemical Grade Production Line: We operate a dedicated clean production line for chemical-grade Hastelloy C276 bars, ensuring strict control over chemical composition and internal quality 3. Full-Process Quality Control: We implement comprehensive quality control including 100% ultrasonic testing and magnetic particle testing for all chemical-grade bars 4. Complete International Certifications: Our products meet all major international standards and hold ASTM, ASME, PED and ISO 9001 certifications 5. Advanced Customization Capability: We can produce custom sizes, lengths, tempers and surface finishes according to your drawings and specifications 6. Global Chemical Supply Chain Experience: We have extensive experience supplying to major chemical companies worldwide, with reliable logistics ensuring on-time delivery 7. Professional Technical Support: Our team of metallurgical engineers and corrosion specialists provides expert guidance on material selection and design optimization 8. One-Stop Solution: We provide complete solutions from raw material supply to precision machining, reducing your supply chain complexity |
| Supplementary Industry Information | 1. Comprehensive Test Reports: Each batch comes with a full MTR including chemical analysis, mechanical properties, heat treatment records and NDT results. Corrosion test reports are available upon request
2. Full Material Traceability: Every bar has a unique heat number and complete traceability documentation from raw material to finished product 3. Value-Added Processing: We offer precision cutting, CNC turning, milling, grinding and heat treatment services, providing ready-to-machine components 4. Prototype Development Support: We support small batch prototype orders with fast turnaround times for new chemical process development 5. Emergency Response Service: We provide 24/7 emergency service for unplanned plant shutdowns, with expedited production and shipping 6. Market Growth: The global Hastelloy C276 bar market for chemical industry is projected to grow at a CAGR of over 6% through 2030, driven by increasing demand for corrosion-resistant materials 7. Sustainability Commitment: All our products are manufactured using sustainable practices and are 100% recyclable |
| Packaging | 1. Plastic Caps: All bar ends are protected with heavy-duty polyethylene caps to prevent damage and contamination
2. Waterproof Film: Each bar is individually wrapped in waterproof and anti-corrosion film to protect against moisture and rust 3. Bundle Packing: Bars of the same size are bundled together with steel straps and wooden spacers to prevent contact damage 4. Wooden Case: Bundles are packed in sturdy fumigated wooden cases with steel reinforcement for international shipping 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, gross weight and destination |
Looking for inconel bar? Send us your size, quantity and application. We will provide a suitable solution and competitive quotation.