Alloy 825 Bar for Automobile Manufacturing

2. Automotive Industry Specific Standards: IATF 16949, ISO/TS 16949, SAE J467, SAE AMS 5571

3. Corrosion Service Standards: NACE MR0175/ISO 15156, NACE MR0103

4. Fastener Standards: ASTM F468, ISO 898-1, SAE J429

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

2. International Designations: UNS N08825, W.Nr. 2.4858, Incoloy 825, NiFe30Cr21Mo3CuTi

3. Equivalent Grades: NS1402 (China), Alloy 825 (USA), Nicrofer 4221 (Germany), fully compatible with all global automotive manufacturing standards

4. Special Grades: Ultra-low carbon version for maximum weldability; ultra-clean version for fluid system applications; ultra-fine grain version for improved machinability

2. Chromium (Cr): 19.5 – 23.5 (for oxidizing acid resistance and high-temperature protection)

3. Molybdenum (Mo): 2.5 – 3.5 (for reducing acid resistance and crevice corrosion resistance)

4. Copper (Cu): 1.5 – 3.0 (enhances resistance to sulfuric acid and reducing acids)

5. Titanium (Ti): 0.6 – 1.2 (stabilizes against intergranular corrosion after welding)

6. Iron (Fe): 22.0 minimum (for improved formability and cost-effectiveness)

7. Carbon (C): ≤0.05 (ultra-low content to prevent intergranular corrosion)

8. Manganese (Mn): ≤1.00

9. Silicon (Si): ≤0.50

10. Phosphorus (P): ≤0.020

11. Sulfur (S): ≤0.015

12. Aluminum (Al): ≤0.20

2. 0.2% Yield Strength (Room Temperature): ≥240 MPa

3. Elongation (δ5): ≥40% (excellent formability for complex components)

4. Reduction of Area: ≥50%

5. Hardness (HB): 130 – 190

6. Impact Toughness (Akv, Room Temperature): ≥180 J

7. Tensile Strength (300℃): ≥480 MPa

8. Tensile Strength (500℃): ≥350 MPa

9. Modulus of Elasticity: 196 GPa

10. Thermal Expansion Coefficient: 14.2 × 10⁻⁶ /℃ (20-100℃)

11. Pitting Resistance Equivalent Number (PREN): ≥30

– 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

– Alloy 825 was specifically developed for sulfuric acid environments, providing 5-10x better corrosion resistance than 316L stainless steel in 0-98% H₂SO₄ solutions at temperatures up to 120℃.

– This makes it the perfect solution for automotive components exposed to sulfuric acid formed by diesel exhaust fluid (DEF) decomposition, exhaust condensation, and battery electrolytes.

– At only 30-40% higher cost than 316L and 30-40% cheaper than Hastelloy C276, it delivers the best cost-performance ratio for mid-to-high corrosion automotive applications.

2. Titanium-Stabilized for Superior Weldability:

– The titanium addition stabilizes the alloy against intergranular corrosion in weld heat-affected zones, eliminating the need for post-weld heat treatment.

– This is a critical advantage for high-volume automotive manufacturing, as it reduces production costs by 30-40%, shortens cycle times, and improves production efficiency.

– Retains 100% of its corrosion resistance and mechanical properties after welding, ensuring long-term reliability of welded joints.

3. Excellent Resistance to Mixed Acid and Chloride Environments:

– Provides exceptional resistance to mixtures of sulfuric acid with nitric acid, hydrochloric acid, and organic acids commonly found in automotive exhaust and fluid systems.

– Resists corrosion from ammonium bisulfate, a highly corrosive byproduct of DEF decomposition that causes rapid failure of stainless steel components.

– Immune to chloride-induced stress corrosion cracking, a common failure mode in components exposed to road salt and coastal environments.

4. Good Formability and Machinability:

– Excellent cold forming properties allow for the production of complex shapes and tight bend radii required in modern automotive fluid systems.

– Good machinability for precision components such as flanges, fittings, and injection nozzles.

– Compatible with all conventional manufacturing processes used in the automotive industry, including forging, stamping, and welding.

5. Long-Term Reliability and Low Total Cost of Ownership:

– Service life of 10-15 years or 200,000+ miles, significantly longer than stainless steel in corrosive environments.

– Reduces warranty claims by 70-80% compared to stainless steel in DEF and exhaust system applications.

– Lower total cost of ownership compared to both stainless steel (due to longer service life) and premium alloys (due to lower initial cost).

6. Environmental Compliance:

– Enables automotive manufacturers to meet increasingly strict global emissions standards by providing durable components for advanced emission control systems.

– Fully recyclable, supporting automotive manufacturers’ sustainability goals.

– Applications: DEF pump bodies, valve components, injection nozzles, filter housings, SCR system fittings, heater tubes and fasteners

– Customers: Daimler Trucks, Volvo Trucks, PACCAR, Scania, MAN, Cummins, Caterpillar, Tier 1 commercial vehicle suppliers (Tenneco, Faurecia, Bosch, Continental)

2. Electric Vehicle Battery Thermal Management Systems:

– Applications: Battery cooling system manifolds, fluid connectors, pump housings, valve bodies, heat exchanger components, and fasteners for lithium-ion and sodium-ion batteries

– Customers: Tesla, BYD, Volkswagen Group, General Motors, Ford, BMW, Mercedes-Benz, Tier 1 EV system suppliers (Valeo, Mahle, Denso, Hanon Systems)

3. Automotive Exhaust Systems:

– Applications: Exhaust manifold flanges, catalytic converter flanges, muffler brackets, exhaust hangers, heat shield fasteners, and EGR system components

– Customers: Global automotive OEMs, Tier 1 exhaust system suppliers (Tenneco, Faurecia, Magna, Bosal), aftermarket exhaust manufacturers

4. Hydrogen Fuel Cell Electric Vehicle (FCEV) Auxiliary Systems:

– Applications: Water management system components, coolant circulation manifolds, humidifier parts, low-pressure gas line fittings, and balance-of-plant hardware

– Customers: Toyota (Mirai), Honda (Clarity Fuel Cell), Hyundai (Nexo), BMW (iX5 Hydrogen), Tier 1 fuel cell system suppliers (Ballard, Plug Power, Cummins)

5. Specialty and Off-Highway Vehicles:

– Applications: Hydraulic system valves, fuel system components, exhaust system hardware, and fasteners for construction equipment, agricultural machinery, and mining trucks

– Customers: Caterpillar, John Deere, Komatsu, Volvo Construction Equipment, military vehicle manufacturers (General Dynamics, Oshkosh)

6. 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

– Sulfuric Acid Resistance: Must resist corrosion from sulfuric acid and ammonium bisulfate formed by DEF decomposition for the entire service life of the vehicle.

– Mixed Acid Resistance: Must withstand corrosion from mixtures of acids commonly found in automotive exhaust and fluid 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 from road salt and coastal environments.

– Mechanical Strength: Must maintain sufficient strength and ductility across the entire operating temperature range (-40℃ to 550℃).

– Pressure Resistance: Must withstand operating pressures up to 100 bar in fluid and exhaust systems.

2. Manufacturing Requirements:

– Consistent Quality: Must have uniform chemical composition (especially titanium and copper 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.

2. Alloy 825 Forgings: Custom forgings including flanges, valve bodies, pump housings and structural components

3. Alloy 825 Fasteners: Bolts, nuts, screws, studs, washers and rivets in all standard and custom sizes

4. Alloy 825 Wire: Solid wire and welding wire for manufacturing springs, fasteners and welding applications

5. Alloy 825 Welding Materials: Electrodes, wires and filler metals specifically formulated for welding Alloy 825 components

6. Alloy 825 Machined Components: Precision-machined parts including valves, fittings, nozzles and sensor housings

7. Alloy 825 Sheets and Plates: Used for manufacturing DEF tank liners, exhaust heat shields and battery cooling system plates

8. Alloy 825 Tubing: Used for DEF delivery lines, battery cooling system tubes and EGR cooler tubes

9. Alloy 825 Powder: Used for additive manufacturing (3D printing) of complex automotive components

10. Custom Fabricated Assemblies: Pre-fabricated DEF piping systems, battery cooling manifolds and exhaust components

2. IATF 16949 Certified: Our production facilities are fully certified to IATF 16949, the international standard for automotive quality management systems.

3. Dedicated Alloy 825 Bar Production Line: We operate a dedicated production line for automotive-grade Alloy 825 bars, ensuring strict control over chemical composition (especially titanium and copper 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 DEF and battery cooling system applications.

2. For any questions about material properties, sulfuric acid corrosion resistance, welding guidelines or automotive industry certifications, our alloy specialists are available to assist you promptly.

3. Emily PIPE is your trusted partner for cost-effective high-performance automotive alloy solutions. Contact us today to discuss how our Alloy 825 bar products can help you develop more durable, reliable and efficient automotive components while optimizing your total project costs.

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.

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 Alloy 825 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. Growing Market Demand: The global demand for Alloy 825 bars in the automotive industry is projected to grow at a CAGR of over 14% through 2030, driven by stricter emissions standards for commercial vehicles and the rapid growth of electric vehicle battery thermal management systems.