High Quality Monel 400 Round Bar Corrosion Resistant, HighStrength for Marine

High Quality Monel 400 Round Bar Corrosion Resistant, High Strength for Marine/Industrial Applications, Precision Machined

Product Overview

Our high-quality Monel 400 Round Bar is a premium nickel-copper alloy product designed for the most demanding marine and industrial applications. Manufactured to international standards such as ASTM B164 , this round bar offers exceptional corrosion resistance, high strength, and excellent machinability. Monel 400 (UNS N04400) is renowned for its superior performance in corrosive environments, making it an ideal choice for critical components in offshore, chemical processing, oil and gas, and marine engineering sectors.

Key Features and Benefits

• Exceptional Corrosion Resistance: Monel 400 demonstrates outstanding resistance to a wide range of corrosive media. It performs excellently in seawater, salt solutions, hydrofluoric acid, sulfuric acid, phosphoric acid, and alkaline solutions . Its corrosion rate in flowing seawater is less than 0.025mm/year, outperforming many stainless steels and copper-based alloys in marine environments.

• High Strength and Durability: This round bar provides excellent mechanical properties, with a typical tensile strength of ≥480 MPa, yield strength of ≥170 MPa, and elongation of ≥35% in the annealed condition . It maintains good strength and toughness from sub-zero temperatures up to about 540°C .

• Precision Machined: Our Monel 400 round bars are precision machined to meet tight dimensional tolerances (e.g., h8, h9 grades for cold-drawn bars ), ensuring easy integration into your designs and reducing secondary machining requirements.

• Excellent Fabricability: The material features a single-phase austenitic microstructure  that allows for good cold and hot workability. It can be welded using common methods like TIG and MIG with appropriate filler materials (e.g., ENiCu-7) .

• Long Service Life: Components made from our Monel 400 round bar offer extended service life in aggressive environments, reducing maintenance costs and downtime .

Technical Specifications

• Material Grade: Monel 400 / UNS N04400 / NCu30-2-1 / 2.4360 

• Standard Specifications: ASTM B164, ASTM B865, ASME SB-164, SB-865, GB/T standards 

• Chemical Composition (Typical wt%):

  • Nickel (Ni): ≥ 63% 

  • Copper (Cu): 28 - 34% 

  • Iron (Fe): ≤ 2.5% 

  • Manganese (Mn): ≤ 2.0% 

  • Carbon (C): ≤ 0.3% 

  • Silicon (Si): ≤ 0.5% 

  • Sulfur (S): ≤ 0.024% 

• Physical Properties:

  • Density: 8.8 g/cm³ 

  • Melting Point: 1300-1350°C 

• Mechanical Properties (Annealed Condition):

  • Tensile Strength: ≥ 480 MPa 

  • Yield Strength (0.2% Offset): ≥ 170 MPa 

  • Elongation: ≥ 35% 

  • Hardness: HB 150-200 

• Available Forms and Sizes:

  • Hot-rolled round bars: Diameter Φ8mm - Φ100mm 

  • Cold-drawn/finished round bars: Diameter Φ2mm - Φ280mm 

  • Forged round bars: Diameter Φ30mm - Φ350mm 

  • Custom sizes and lengths available upon request

Applications

Our Monel 400 round bar is suitable for a wide range of critical applications, including:

• Marine & Offshore: Pump shafts, propeller shafts, valve stems, fasteners, seawater piping systems, condenser tubes, desalination plant components .

• Oil & Gas: Valve components, pump parts, downhole tools, piping components for corrosive oil and gas production environments .

• Chemical Processing: Reactors, heat exchangers, vessels, piping, and fittings handling acids (especially HF and H₂SO₄), alkalis, and other corrosive chemicals .

• Power Generation: Components in feedwater heaters, evaporators, and other equipment .

• Other Industries: Aerospace (fuel system components ), pharmaceutical, and water treatment equipment.

Packaging and Quality Assurance

Every shipment of our Monel 400 round bar includes a complete Material Test Report (MTR) that certifies compliance with the specified standards, including chemical composition and mechanical properties . We employ strict quality control throughout the manufacturing process and use proper packaging (e.g., rust-preventive oil, VCI paper ) to ensure the product arrives in perfect condition.

Why Choose Our Monel 400 Round Bar?

• Consistent High Quality: Sourced from reputable mills employing vacuum melting techniques (VIM/VAR) for high purity .

• Technical Expertise: Our team provides expert guidance on material selection and fabrication techniques.

• Reliable Supply: We maintain stock to meet your project timelines.

• Competitive Pricing: We offer competitive pricing for high-quality material.

Contact Us Today

For more information on our high-quality Monel 400 round bars, pricing, or to discuss your specific requirements, please contact our sales team. We are ready to provide technical support and help you choose the right material for your application.