Monel 400 (UNS N04400) bar for chemical industry is a classic nickel-copper solid solution alloy bar, renowned for its unmatched resistance to hydrofluoric acid, seawater and reducing acids. Specially engineered for severe corrosion service where stainless steels fail rapidly, it provides exceptional durability for critical components in fluorochemical processing, marine systems and acid handling applications.
As the most cost-effective nickel-copper alloy for chemical processing, Monel 400 bar exhibits excellent mechanical properties from subzero temperatures up to 480℃, with outstanding formability and weldability. With over 20 years of production experience, Emily PIPE supplies precision-manufactured Monel 400 bars in all standard and custom sizes that meet the strictest international chemical industry standards.
| Item | Details |
|---|---|
| Executive Standards | 1. International Material Standards: ASTM B164 (Bar/Rod), ASTM B564 (Forgings), ASME SB164, ASME SB564, DIN 17743, EN 2.4360
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, ASTM A388 5. Quality Management Standards: ISO 9001, ISO 14001, OHSAS 18001 |
| Material Grade | 1. Main Grade: Monel 400 (Nickel-Copper Alloy, Severe Corrosion Chemical Grade)
2. International Designations: UNS N04400, W.Nr.2.4360, Alloy 400, NiCu30Fe 3. Equivalent Grades: NS3301 (China), Monel 400 (USA), Monel 400 (Germany) 4. Special Grades: Forging grade for heavy components; precision ground grade for tight tolerance applications |
| Chemical Composition (Weight %) | 1. Nickel (Ni): 63.0% minimum (base element for corrosion resistance)
2. Copper (Cu): 28.0-34.0 (key element for hydrofluoric acid resistance) 3. Iron (Fe): ≤2.5 (improves strength and formability) 4. Manganese (Mn): ≤2.0 5. Carbon (C): ≤0.3 6. Silicon (Si): ≤0.5 7. Sulfur (S): ≤0.024 Note: The balanced nickel-copper composition creates a single-phase solid solution structure that provides unique corrosion resistance |
| Mechanical Properties (Annealed State) | 1. Tensile Strength (RT): 480-700 MPa
2. 0.2% Yield Strength (RT): ≥170 MPa 3. Elongation (δ5): ≥35% 4. Reduction of Area: ≥50% 5. Hardness (HB): 110-170 6. Tensile Strength (200℃): ≥410 MPa 7. Tensile Strength (400℃): ≥310 MPa 8. Modulus of Elasticity: 179 GPa 9. Maximum Continuous Service Temperature: 480℃ |
| Dimensional Tolerance | 1. Hot Rolled Bars: Ø6-50mm ±0.3mm; Ø50-150mm ±0.5mm; Ø150-300mm ±0.8mm
2. Cold Drawn Bars: Ø6-30mm ±0.03mm; Ø30-80mm ±0.05mm; Ø80-150mm ±0.10mm 3. Precision Ground Bars: Ø6-100mm ±0.01mm 4. Rectangular/Square Bars: ±0.05mm (≤50mm); ±0.10mm (>50mm) 5. Length Tolerance: ±2mm (1-6m); custom lengths up to 12m available 6. Straightness Tolerance: ≤0.5mm/m (precision); ≤0.3mm/m (ultra-precision) |
| Why This Material Is Used in Chemical Industry | 1. Unmatched Hydrofluoric Acid Resistance:
– The only commercial alloy that resists corrosion from hydrofluoric acid at all concentrations and temperatures – Excellent resistance to all fluoride compounds, including hydrogen fluoride, fluorine gas and fluorides – Forms a protective copper fluoride film that prevents further corrosion in HF environments 2. Superior Seawater Corrosion Resistance: – Immune to chloride-induced stress corrosion cracking, pitting and crevice corrosion in seawater – Excellent resistance to biofouling, making it ideal for marine applications – Outperforms all stainless steels and most nickel alloys in seawater environments 3. Excellent Reducing Acid Resistance: – Good resistance to low-concentration sulfuric acid (up to 10% at boiling point) – Excellent resistance to hydrochloric acid (up to 5% at room temperature) – Good resistance to alkaline solutions, organic acids and salts 4. Broad Temperature Range Performance: – Maintains excellent mechanical properties from cryogenic temperatures (-253℃) up to 480℃ – Excellent toughness at low temperatures, making it suitable for cryogenic applications – Good thermal stability with no harmful phase precipitation during service 5. Superior Fabricability and Cost-Effectiveness: – Excellent formability, machinability and weldability, reducing fabrication costs – 30-50% lower material cost than Inconel and Hastelloy alloys – Long service life of 15-20+ years in most chemical environments |
| Application Scenarios and Corresponding Customers | 1. Hydrofluoric Acid and Fluorochemical Industry:
– Applications: Pump shafts, valve bodies, impellers, agitator shafts, fasteners, flanges and reactor components – Customers: DuPont, Honeywell, Solvay, Arkema, Daikin Industries, Sinochem 2. Seawater Desalination and Marine Industry: – Applications: Seawater pump components, valve parts, heat exchanger tube sheets, fasteners and structural parts – Customers: Siemens Energy, GE Power, DuPont Water Solutions, Veolia, SUEZ 3. Sulfuric Acid and Hydrochloric Acid Industry: – Applications: Acid pump components, valve bodies, agitators, fasteners and heat exchanger parts – Customers: BASF, Bayer, ExxonMobil Chemical, Shell Chemical, Sinopec 4. Petroleum and Natural Gas Industry: – Applications: Sour gas processing components, pump and valve parts, fasteners and structural components – Customers: ExxonMobil, Shell, BP, Chevron, TotalEnergies, Saudi Aramco 5. Pharmaceutical and Fine Chemical Industry: – Applications: Reactor components, agitator shafts, valve parts, fasteners and process equipment – Customers: Pfizer, Novartis, Merck, Roche, Johnson & Johnson, AstraZeneca 6. Uranium Processing and Nuclear Industry: – Applications: Uranium hexafluoride handling equipment, pump components, valve parts and fasteners – Customers: Areva, Westinghouse, Rosatom, China National Nuclear Corporation |
| Customer Requirements in This Industry | 1. Performance Requirements:
– Hydrofluoric Acid Resistance: Must resist corrosion from HF and all fluoride compounds – Seawater Corrosion Resistance: Must be immune to chloride-induced corrosion in seawater – Reducing Acid Resistance: Must resist corrosion from low-concentration sulfuric and hydrochloric acids – Mechanical Strength: Must maintain sufficient strength across the full operating temperature range – Cryogenic Toughness: Must maintain excellent toughness at subzero temperatures 2. Quality and Compliance Requirements: – Material Standard Compliance: Must meet all requirements of ASTM B164 and ASME SB164 – ASME B31.3 Compliance: Must comply with process piping code for chemical plant construction – Full Traceability: Must provide 100% traceability from raw material ore to finished product – Material Certification: Must provide comprehensive MTRs including chemical analysis 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 for proper fit and assembly – Surface Quality: Must have a smooth, defect-free surface to prevent corrosion initiation – Internal Quality: Must be free from inclusions, porosity and segregation (100% UT verified) – Consistent Quality: Must have uniform chemical composition 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 for unplanned shutdowns – Small Batch Capability: Must produce small quantities for prototype development and maintenance – 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, turning, milling and heat treatment services |
| Common Related Products in This Industry | 1. Monel 400 Round Bars: Diameters 6mm-300mm in annealed and cold drawn conditions
2. Monel 400 Square/Rectangular Bars: Custom sizes for structural applications and machine components 3. Monel 400 Hexagonal Bars: Used for manufacturing nuts, bolts, screws and other threaded fasteners 4. Monel 400 Forgings: Custom forgings including pump bodies, valve casings, flanges and impellers 5. Monel 400 Fasteners: Bolts, nuts, screws, studs and washers for severe corrosion service 6. Monel 400 Welding Materials: Electrodes, wires and filler metals for chemical industry welding 7. Monel 400 Machined Components: Precision-machined shafts, pins, valves and pump parts 8. Monel 400 Sheets and Plates: Used for manufacturing tanks, vessels and heat exchangers 9. Monel 400 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 Monel 400 bar products to the global chemical industry for over 20 years
2. Dedicated Chemical Grade Production Line: We operate a dedicated clean production line for Monel 400 bars, ensuring strict control over chemical composition 3. Full-Process Quality Control: We implement comprehensive quality control including 100% ultrasonic and magnetic particle testing 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 6. Global Chemical Supply Chain Experience: We have extensive experience supplying to major chemical companies worldwide with reliable on-time delivery 7. Professional Technical Support: Our team of metallurgical engineers and corrosion specialists provides expert guidance on material selection 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 and NDT results. Corrosion test reports 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 4. Prototype Development Support: We support small batch prototype orders with fast turnaround times 5. Emergency Response Service: We provide 24/7 emergency service for unplanned plant shutdowns with expedited shipping 6. Market Growth: The global Monel 400 bar market is projected to grow at a CAGR of over 4% through 2030, driven by increasing demand from fluorochemical and marine industries 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 3. Bundle Packing: Bars 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, quantity and destination |
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