Hastelloy C22 (UNS N06022) bar for automobile manufacturing is an upgraded premium nickel-chromium-molybdenum-tungsten superalloy bar, offering industry-leading resistance to mixed oxidizing-reducing acids, pitting, crevice corrosion and stress corrosion cracking. Specially engineered for the most aggressive automotive environments, it provides unmatched durability in hydrogen fuel cell systems, heavy-duty emission control systems and high-performance exhaust hardware where conventional alloys fail prematurely.
As the successor to Hastelloy C276, Hastelloy C22 bar delivers 20-30% enhanced corrosion resistance in multi-component chemical mixtures while maintaining excellent forgeability, machinability and weldability. It is the material of choice for critical automotive applications where failure would result in catastrophic safety hazards or significant production downtime, offering superior long-term reliability compared to all other commercial corrosion-resistant alloys.
| Item | Details |
|---|---|
| Executive Standards | 1. International Material Standards: ASTM B574 (Bar, Rod and Wire), ASTM B564 (Forgings), ASME SB574, ASME SB564, DIN 17744, EN 2.4602
2. Automotive Industry Specific Standards: IATF 16949, ISO/TS 16949, SAE J467, SAE AMS 5586, SAE AMS 5597 3. Fastener Standards: ASTM F468, ISO 898-1, SAE J429 4. Fuel Cell Specific Standards: ISO 14687, SAE J2578, IEC 62282 5. Testing Standards: ASTM E8 (Tensile), ASTM E23 (Impact), ASTM E10 (Hardness), ASTM G48 (Pitting Corrosion) 6. Quality Management Standards: ISO 9001, ISO 14001, IATF 16949, PED 2014/68/EU |
| Material Grade | 1. Main Grade: Hastelloy C22 (Nickel-Chromium-Molybdenum-Tungsten Superalloy, Automotive Premium Corrosion-Resistant Grade)
2. International Designations: UNS N06022, W.Nr. 2.4602, Alloy C22, NiCr21Mo14W 3. Equivalent Grades: NS3308 (China), Hastelloy C22 (USA), Nicrofer 5621 (Germany), fully compatible with all global automotive manufacturing standards 4. Special Grades: Ultra-low interstitial version for maximum weldability; ultra-fine grain version for improved machinability; precision forged version for high-strength components |
| Chemical Composition (Weight %) | 1. Nickel (Ni): 56.0% minimum (base element for overall corrosion resistance and thermal stability)
2. Chromium (Cr): 20.0 – 22.5 (for oxidizing acid resistance and high-temperature oxidation protection) 3. Molybdenum (Mo): 12.5 – 14.5 (primary element for reducing acid resistance and crevice corrosion resistance) 4. Tungsten (W): 2.5 – 3.5 (enhances corrosion resistance in reducing acids and high-temperature environments) 5. Iron (Fe): 2.0 – 6.0 (for improved formability and cost-effectiveness) 6. Cobalt (Co): ≤2.5 7. Carbon (C): ≤0.015 (ultra-low content to prevent intergranular corrosion after welding) 8. Silicon (Si): ≤0.08 (ultra-low content to improve weldability and corrosion resistance) 9. Manganese (Mn): ≤0.50 10. Phosphorus (P): ≤0.015 11. Sulfur (S): ≤0.010 12. Vanadium (V): ≤0.35 |
| Mechanical Properties (Annealed State) | 1. Tensile Strength (Room Temperature): 760 – 930 MPa
2. 0.2% Yield Strength (Room Temperature): ≥345 MPa 3. Elongation (δ5): ≥45% (excellent formability for complex components) 4. Reduction of Area: ≥55% 5. Hardness (HB): 180 – 230 6. Impact Toughness (Akv, Room Temperature): ≥200 J 7. Tensile Strength (300℃): ≥650 MPa 8. Tensile Strength (500℃): ≥550 MPa 9. Tensile Strength (700℃): ≥300 MPa 10. Modulus of Elasticity: 206 GPa 11. Thermal Expansion Coefficient: 12.4 × 10⁻⁶ /℃ (20-100℃) 12. Pitting Resistance Equivalent Number (PREN): >42 |
| Dimensional Tolerance (Automotive 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 Turned & Ground Bars: – Diameter 6mm – 100mm: ±0.01mm 4. Length Tolerance: – Fixed Length (1m – 6m): ±3mm – Custom Length up to 12m available 5. Straightness Tolerance: ≤0.5mm/m for all grades |
| Why This Material Is Used in Automobile Manufacturing (Detailed) | 1. Superior Resistance to Mixed Acid Corrosion:
– Hastelloy C22 outperforms C276 by 20-30% in mixed oxidizing-reducing environments, which are common in automotive exhaust systems containing sulfuric acid, nitric acid, hydrochloric acid and organic acids. – Completely resistant to corrosion from ammonium bisulfate, the highly corrosive byproduct of DEF decomposition that causes 90% of SCR system failures in heavy-duty diesel trucks. – Immune to chloride-induced pitting, crevice corrosion and stress corrosion cracking, eliminating the rust-through problem common in vehicles operating in northern regions and coastal areas. – Resists corrosion from all automotive fluids including coolants, oils, fuels and battery electrolytes. 2. Exceptional Hydrogen Embrittlement Resistance: – Unlike most steels and stainless steels, Hastelloy C22 exhibits excellent resistance to hydrogen embrittlement even at pressures up to 700 bar, making it the ideal material for hydrogen fuel cell vehicle components. – Maintains full ductility and mechanical properties after long-term exposure to high-pressure hydrogen gas, ensuring the safety and reliability of hydrogen storage and delivery systems. – Resists hydrogen-induced cracking and blistering, critical for the long-term performance of fuel cell stack components. 3. Superior Weldability Without Post-Weld Heat Treatment: – Ultra-low carbon and silicon content prevents intergranular corrosion in weld heat-affected zones, eliminating the need for post-weld heat treatment. – This reduces manufacturing costs by 30-40% and shortens production cycles, making it ideal for high-volume automotive manufacturing. – Retains 100% of its corrosion resistance and mechanical properties after welding, ensuring long-term reliability of welded joints. – Compatible with all high-speed automated welding processes used in automotive manufacturing, including laser welding and robotic TIG/MIG welding. 4. Excellent High-Temperature Performance: – Maintains full mechanical properties up to 760℃ in oxidizing environments, suitable for high-performance exhaust systems and turbocharger components. – Forms a stable, protective oxide layer at high temperatures that resists spalling during thermal cycling. – Excellent thermal fatigue resistance, withstanding millions of heating and cooling cycles without cracking. 5. Superior Cost-Performance Ratio: – Offers better corrosion resistance than Hastelloy C276 in most automotive applications at a comparable or slightly lower cost. – Longer service life reduces warranty claims and replacement costs, resulting in significantly lower total cost of ownership. – Enables automotive manufacturers to meet the strictest durability requirements without excessive cost increases. 6. Long-Term Reliability and Durability: – Service life of 20+ years or 300,000+ miles, significantly longer than stainless steel and even Hastelloy C276 in corrosive environments. – Critical for premium and luxury vehicles where reliability and durability are key brand differentiators. – Reduces maintenance costs and downtime for commercial vehicles operating in harsh conditions. |
| Application Scenarios and Corresponding Customers (Detailed) | 1. Hydrogen Fuel Cell Electric Vehicles (FCEV):
– Applications: Fuel cell stack end plates, bipolar plate supports, high-pressure hydrogen tank valves, pressure regulators, safety relief valves, hydrogen delivery system fittings, injectors and fasteners – Customers: Toyota (Mirai), Honda (Clarity Fuel Cell), Hyundai (Nexo), BMW (iX5 Hydrogen), Mercedes-Benz (GLC F-Cell), Tier 1 fuel cell system suppliers (Ballard Power Systems, Plug Power, Cummins, Bosch) 2. Heavy-Duty Commercial Vehicle Emission Control Systems: – Applications: SCR system components, DEF injection nozzles, pump bodies, valve components, DPF housings, EGR cooler flanges and exhaust system hardware – Customers: Daimler Trucks, Volvo Trucks, PACCAR, Scania, MAN, Cummins, Caterpillar, Tier 1 commercial vehicle suppliers (Tenneco, Faurecia, Magna) 3. Premium and Luxury Vehicle Exhaust Systems: – Applications: Exhaust manifold flanges, catalytic converter flanges, muffler brackets, exhaust hangers, heat shield fasteners and valve components – Customers: Mercedes-Benz, BMW, Audi, Porsche, Bentley, Rolls-Royce, Ferrari, Lamborghini, Tier 1 exhaust system suppliers (Akrapovič, Borla, MagnaFlow) 4. Sensors and Actuators: – Applications: Oxygen sensor housings, NOx sensor bodies, temperature sensor housings, pressure sensor components, EGR actuator parts and fuel injector bodies – Customers: Bosch, Continental, Denso, Delphi, Vitesco Technologies, Sensata Technologies 5. Specialty and Off-Highway Vehicles: – Applications: Exhaust system components, fuel system parts, hydraulic system valves and fasteners for military vehicles, construction equipment, agricultural machinery and marine vehicles – Customers: General Dynamics, Oshkosh, Caterpillar, John Deere, Komatsu, Cummins Marine, Volvo Penta 6. High-Strength Corrosion-Resistant Fasteners: – Applications: Engine bolts, exhaust system fasteners, suspension hardware, brake system components and underbody fasteners for vehicles operating in corrosive environments – Customers: Arconic, Stanley Black & Decker, ITW, global automotive OEMs and Tier 1 suppliers |
| Customer Requirements in This Industry (Detailed) | 1. Performance Requirements:
– Mixed Acid Corrosion Resistance: Must resist corrosion from exhaust condensation mixtures, DEF decomposition products, road salts, hydrogen and all automotive fluids for the entire service life of the vehicle. – Hydrogen Embrittlement Resistance: Must be completely immune to hydrogen embrittlement for FCEV high-pressure hydrogen systems. – Intergranular Corrosion Resistance: Must be completely immune to intergranular corrosion after welding without post-weld heat treatment. – Stress Corrosion Cracking Resistance: Must resist chloride-induced stress corrosion cracking under all operating conditions. – Mechanical Strength: Must maintain sufficient strength and ductility across the entire operating temperature range (-40℃ to 760℃). – Pressure Resistance: Must withstand operating pressures up to 700 bar in FCEV hydrogen storage systems. 2. Manufacturing Requirements: – Consistent Quality: Must have uniform chemical composition (especially carbon and silicon content) and mechanical properties across all batches. – Tight Dimensional Tolerances: Must meet strict dimensional tolerances to ensure proper fit and assembly in automated manufacturing lines. – Excellent Forgeability: Must be forgeable into complex shapes such as valve bodies and flanges without cracking or defects. – Good Machinability: Must be easily machinable using conventional CNC equipment to produce precision components with tight tolerances. – Excellent Weldability: Must be compatible with high-speed automated welding processes with no post-weld heat treatment required. – Surface Quality: Must have a smooth, defect-free surface to prevent corrosion initiation and ensure proper sealing. 3. Supply Chain Requirements: – Just-In-Time (JIT) Delivery: Must provide reliable on-time delivery to support JIT manufacturing systems used by automotive OEMs. – Scalable Production: Must be able to scale production from prototype volumes (hundreds of units) to mass production volumes (millions of units per year). – Global Supply Capability: Must be able to supply to manufacturing facilities worldwide with consistent quality and lead times. – Inventory Management: Must offer inventory management solutions to reduce customer inventory costs and minimize supply chain risks. – Emergency Response: Must be able to respond quickly to unexpected demand spikes or supply disruptions. 4. Compliance Requirements: – IATF 16949 Certification: Must comply with the IATF 16949 automotive quality management standard. – Full Traceability: Must provide 100% traceability from raw material ore to finished product, including heat treatment records and test results. – Environmental Compliance: Must comply with global environmental regulations including REACH, RoHS and ELV (End-of-Life Vehicle). – Material Certification: Must provide comprehensive material test reports (MTR) with each shipment, including chemical analysis, mechanical properties and non-destructive test results. – Safety Standards: Must meet all applicable automotive safety standards for pressure-containing components. 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 warranty claims. – Value-Added Services: Must offer value-added services such as cutting, turning, milling and heat treatment to reduce customer manufacturing costs. – Long-Term Price Stability: Must provide stable pricing over the multi-year lifecycle of automotive programs. |
| Common Related Products in This Industry | 1. Hastelloy C22 Bars and Rods: Round bars, square bars, hexagonal bars and rectangular bars in various sizes and tempers
2. Hastelloy C22 Forgings: Custom forgings including flanges, valve bodies, fuel cell stack components and structural parts 3. Hastelloy C22 Fasteners: Bolts, nuts, screws, studs, washers and rivets in all standard and custom sizes 4. Hastelloy C22 Wire: Solid wire and welding wire for manufacturing springs, fasteners and welding applications 5. Hastelloy C22 Welding Materials: Electrodes, wires and filler metals specifically formulated for welding Hastelloy C22 components 6. Hastelloy C22 Machined Components: Precision-machined parts including valves, fittings, nozzles and sensor housings 7. Hastelloy C22 Sheets and Plates: Used for manufacturing exhaust heat shields, fuel cell bipolar plates and end plates 8. Hastelloy C22 Tubing: Used for EGR coolers, fuel cell gas lines and sensor tubing 9. Hastelloy C22 Powder: Used for additive manufacturing (3D printing) of complex automotive components 10. Custom Fabricated Assemblies: Pre-fabricated fuel cell components, SCR system parts and exhaust system hardware |
| Why Choose Us (Emily PIPE) | 1. 20+ Years of Automotive Alloy Expertise: We have been supplying high-performance Hastelloy alloy bar products to the global automotive industry for over 20 years, with deep understanding of the unique requirements of fuel cell and commercial vehicle applications.
2. IATF 16949 Certified: Our production facilities are fully certified to IATF 16949, the international standard for automotive quality management systems. 3. Dedicated Hastelloy C22 Bar Production Line: We operate a dedicated clean production line for automotive-grade Hastelloy C22 bars, ensuring strict control over chemical composition (especially carbon and silicon content), mechanical properties and surface quality. 4. Full-Process Quality Control: We implement a comprehensive quality control system from raw material inspection to finished product testing, including 100% ultrasonic testing and magnetic particle testing for all automotive-grade bars. 5. Advanced Customization Capability: We can produce custom sizes, lengths, tempers and surface finishes according to your drawings and technical specifications, including precision-turned bars and forged blanks. 6. In-House Testing Laboratory: We operate a fully equipped testing laboratory that can perform all required automotive industry tests, including corrosion testing, mechanical testing and non-destructive testing. 7. Global Automotive Supply Chain Experience: We have extensive experience supplying to global automotive OEMs and Tier 1 suppliers, with reliable logistics partners ensuring on-time delivery to manufacturing facilities worldwide. 8. Professional Automotive Technical Support: Our team of metallurgical engineers and automotive specialists provides expert guidance on material selection, design optimization and manufacturing techniques for fuel cell and emission control system applications. |
| Inquiry Guidance Words | 1. If you need high-quality automotive-grade Hastelloy C22 bars for your fuel cell system, SCR system, exhaust system or other corrosion-sensitive automotive application, please send us your specific requirements including dimensions, quantity, required temper, surface finish and delivery date, and we will provide a detailed quotation within 12 hours.
2. For any questions about material properties, hydrogen compatibility, corrosion resistance in mixed acid environments or automotive industry certifications, our alloy specialists are available to assist you promptly. 3. Emily PIPE is your trusted partner for high-performance corrosion-resistant automotive alloy solutions. Contact us today to discuss how our Hastelloy C22 bar products can help you develop more durable, reliable and efficient automotive components. |
| Supplementary Industry Information | 1. Comprehensive Test Reports: Each batch comes with a full Material Test Report (MTR) including chemical composition analysis (with verified carbon and silicon content), mechanical properties testing, heat treatment records and non-destructive test results.
2. Full Material Traceability: Every bar comes with a unique heat number and complete traceability documentation from raw material ore to finished product, meeting the strictest automotive industry requirements. 3. Value-Added Processing: We offer comprehensive value-added services including precision cutting, CNC turning, milling, grinding, heat treatment and surface finishing, providing ready-to-machine automotive components. 4. Specialized Automotive Packaging: We use protective packaging designed for bar products, including end caps, anti-corrosion wrapping and steel crates to prevent damage during transportation. Cleanroom packaging is available for fuel cell components. 5. Prototype Development Support: We support small batch prototype orders with fast turnaround times to help you accelerate product development and testing for new automotive programs. 6. Mass Production Capability: We have the capacity to produce thousands of tons of Hastelloy C22 bars per year to support mass production automotive and commercial vehicle programs. 7. Dedicated After-Sales Service: We provide dedicated after-sales support for automotive customers, including technical assistance, quality issue resolution and supply chain management. 8. 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. 9. Explosive Market Growth: The global demand for Hastelloy C22 bars in the automotive industry is projected to grow at a CAGR of over 28% through 2035, driven by the exponential growth of the hydrogen fuel cell vehicle market and stricter emissions standards for heavy-duty trucks. |