Hastelloy C276 (UNS N10276, W.Nr.2.4819) for ship manufacturing is the world's most versatile corrosion-resistant superalloy, exclusively specified for the most extreme marine chemical environments. It is the only commercial alloy that can reliably withstand the simultaneous attack of hydrofluoric acid, hydrochloric acid, sulfuric acid and chlorides, making it the irreplaceable material for chemical tankers, FPSOs and deep-sea exploration vessels.
With a PREN value of ≥69, the highest among all standard marine alloys, Hastelloy C276 delivers unmatched resistance to pitting, crevice corrosion and stress corrosion cracking. Emily PIPE supplies classification society-certified Hastelloy C276 seamless pipes, bars, forgings and clad products manufactured via double vacuum melting (VIM+VAR) with full traceability from ingot to finished component.
| Item | Details |
|---|---|
| Executive Standards | 1. International Material Standards: ASTM B622 (Seamless Pipe/Tube), ASTM B619 (Welded Pipe), ASTM B574 (Bar/Rod)
2. Marine Standards: ABS, DNV, LR, BV, CCS, RINA 3. Offshore Standards: NACE MR0175/ISO 15156-3, API 5LC 4. Pressure Vessel Standards: ASME Section VIII Div.1 5. Testing Standards: ASTM E8, ASTM G48 (Pitting/Crevice), ASTM E243 (Eddy Current) |
| Material Grade | 1. Standard Marine Grade: Hastelloy C276 (UNS N10276), solution annealed
2. Premium Marine Grade: VIM+VAR double vacuum melted, low residual elements 3. Clad Grade: Hastelloy C276 clad on carbon steel for large-diameter piping 4. Equivalent Grades: NS3304 (China), Hastelloy C276 (USA), Nicrofer 5716 (Germany) |
| Chemical Composition (Weight %) | 1. Nickel (Ni): 57.0% minimum (matrix stabilization and corrosion resistance)
2. Chromium (Cr): 14.5-16.5 (oxidizing acid resistance) 3. Molybdenum (Mo): 15.0-17.0 (reducing acid and pitting resistance) 4. Tungsten (W): 3.0-4.5 (enhanced crevice corrosion resistance) 5. Iron (Fe): 4.0-7.0 (improves formability) 6. Carbon (C): ≤0.010, Silicon (Si): ≤0.08, Sulfur (S): ≤0.010 Note: The ultra-low carbon and silicon content prevents grain boundary precipitation during welding |
| Mechanical Properties (Solution Annealed) | 1. Tensile Strength (RT): 690-900 MPa
2. 0.2% Yield Strength (RT): ≥310 MPa 3. Elongation (δ5): ≥40% 4. Impact Toughness (-196℃): ≥120 J 5. Maximum Continuous Service Temperature: 650℃ |
| Dimensional Tolerance | 1. Seamless Pipes/Tubes: Ø6-50mm ±0.15mm; Ø50-150mm ±0.3mm; Wall thickness ±0.08-0.12mm
2. Bars/Rods: Ø6-50mm ±0.3mm; Ø50-300mm ±0.6mm; Straightness ≤0.3mm/m 3. Forgings: Custom dimensions per drawing, tolerance ±0.5mm 4. Length Tolerance: ±2mm (1-12m); custom lengths up to 18m available |
| Why This Material Is Used in Ship Manufacturing | 1. Ultimate Chemical Tanker Solution:
– The only alloy approved for transporting 90%+ of hazardous chemicals including HCl, HF, H₂SO₄, Cl₂ and chlorinated solvents – Corrosion rate <0.001mm/year in boiling 10% HCl vs. >10mm/year for 316L – Eliminates cargo contamination risks and reduces dry dock inspection frequency 2. Unmatched Sour Service Performance: – NACE MR0175 certified for H₂S partial pressures up to 100 psi – Resists sulfide stress cracking (SSC) and hydrogen-induced cracking (HIC) – Ideal for FPSO process piping handling high-sulfur crude oil and gas 3. Superior Deep-Sea Exploration Capability: – Withstands hydrostatic pressure at depths up to 6000 meters – Non-magnetic properties make it ideal for ROV navigation and sonar equipment – Excellent erosion resistance to sediment-laden deep-sea water 4. Environmental Compliance Advantage: – No need for protective coatings, eliminating toxic coating leaching – Meets strict MARPOL and IMO environmental regulations – 100% recyclable, supporting circular economy initiatives 5. Superior Field Fabricability: – Excellent weldability with all conventional welding processes – No post-weld heat treatment required, critical for remote offshore installations – Reduces installation time and costs by 40-50% compared to other high-performance alloys |
| Application Scenarios and Corresponding Customers | 1. Chemical and Product Tankers:
– Applications: Cargo tank liners, cargo piping, pump and valve components, heat exchangers, vent systems – Customers: Stolt-Nielsen, Odfjell, Navig8, Maersk Tankers, Sinochem Shipping 2. FPSOs and FLNGs: – Applications: Acid gas removal systems, produced water handling, seawater lift systems, flare stacks, process piping – Customers: ExxonMobil, Shell, BP, Chevron, TotalEnergies, CNOOC 3. Deep-Sea Exploration Vessels: – Applications: ROV/AUV pressure hulls, sampling systems, subsea instrumentation, hydraulic systems – Customers: Woods Hole Oceanographic Institution, China Ocean Mineral Resources R&D Association 4. Naval and Military Vessels: – Applications: Mine countermeasure vessel components, exhaust gas cleaning systems, seawater piping, non-magnetic equipment – Customers: US Navy, Royal Navy, Chinese People’s Liberation Army Navy 5. LNG Carriers: – Applications: Cryogenic piping systems, valve bodies, pump shafts, heat exchanger tubes – Customers: QatarEnergy, Shell LNG, MOL, NYK Line, China LNG Shipping |
| Customer Requirements in This Industry | 1. Performance Requirements:
– Mixed Acid Resistance: Must withstand simultaneous attack of multiple corrosive chemicals – Sour Service Resistance: Must meet NACE MR0175 requirements for H₂S – Cryogenic Toughness: Must maintain ductility at -196℃ for LNG applications – Erosion-Corrosion Resistance: Must withstand high-velocity fluid and sediment impingement – Non-Magnetic Properties: Must meet strict magnetic permeability standards for naval applications 2. Quality and Compliance Requirements: – Classification Society Certification: Must provide ABS, DNV, LR or equivalent certification – NACE Certification: Must provide NACE MR0175 certification for sour service – Full Traceability: Must provide complete traceability from raw material to finished product – Third-Party Inspection: Must allow inspection by classification society surveyors – Material Certification: Must provide EN 10204 3.2 mill test reports 3. Manufacturing Requirements: – Double Vacuum Melting: Must use VIM+VAR process for critical components – Precision Dimensional Tolerances: Must meet tight tolerances for proper fit and assembly – Surface Quality: Must have smooth surfaces to reduce flow resistance and corrosion initiation – Non-Destructive Testing: Must undergo 100% UT, ET and hydrostatic testing – Customization: Must produce custom sizes and shapes per customer drawings |
| Common Related Products in This Industry | 1. Hastelloy C276 Seamless Pipes/Tubes: For chemical cargo piping, process piping and heat exchangers
2. Hastelloy C276 Welded Pipes: Cost-effective for large-diameter cargo and process piping 3. Hastelloy C276 Clad Pipes: Carbon steel base with C276 liner for large-diameter high-pressure lines 4. Hastelloy C276 Bars/Rods: For pump shafts, valve stems, impellers and fasteners 5. Hastelloy C276 Forgings: Custom forgings including flanges, valve bodies, pump casings and manifolds 6. Hastelloy C276 Fasteners: Bolts, nuts, screws, studs and washers for severe corrosion service 7. Hastelloy C276 Welding Materials: ERNiCrMo-4 electrodes and wires for marine welding 8. Hastelloy C276 Sheets and Plates: For cargo tank liners, splash zone cladding and structural components 9. Hastelloy C276 U-Bend Tubes: Custom bent tubes for marine heat exchangers and condensers 10. Custom Fabricated Assemblies: Pre-fabricated piping spools and heat exchanger bundles |
| Why Choose Us (Emily PIPE) | 1. 20+ Years of Marine Alloy Expertise: We have supplied Hastelloy C276 products to over 200 shipbuilding and offshore projects worldwide
2. Full Classification Society and NACE Certification: Our production line is certified by ABS, DNV, LR, BV, CCS and NACE 3. Full-Process Quality Control: We implement 100% ultrasonic, eddy current and hydrostatic testing on all products 4. Advanced Cladding Technology: We offer Hastelloy C276 clad pipes and plates for cost-effective large-scale applications 5. Strategic Inventory Management: We maintain 200+ tons of Hastelloy C276 inventory to support urgent ship repair requirements 6. Global Logistics Network: We have experience delivering to remote shipyards and offshore locations worldwide 7. Dedicated Marine Technical Team: Our metallurgical engineers specialize in marine material selection and failure analysis 8. One-Stop Solution: We provide complete solutions from raw material supply to finished machined components |
| Supplementary Industry Information | 1. Comprehensive Test Reports: Each batch comes with a full MTR including chemical analysis, mechanical properties, NDT results and corrosion test reports. Cryogenic impact test reports available upon request
2. Full Material Traceability: Every product has a unique heat number and complete traceability documentation from ingot to finished product 3. Value-Added Processing: We offer precision cutting, CNC bending, welding, end processing and surface finishing services 4. Emergency Response Service: We provide 24/7 emergency support for ship repair and dry dock requirements 5. Market Growth: The global Hastelloy C276 market for shipbuilding is projected to grow at a CAGR of over 8% through 2030, driven by chemical tanker fleet expansion and stricter environmental regulations 6. 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 to prevent contamination
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 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, batch number, quantity and destination |
Looking for Hastelloy C276 pipe, bar or forging for shipbuilding or offshore applications? Send us your dimensions, application requirements and certification standards. We will provide a customized quotation and technical data sheet within 12 hours.