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Monel Alloy 400 Round Bar

Monel alloy 400 (UNS N04400) is a solid-solution nickel-copper alloy, not steel. It is frequently specified for marine fittings, valves, process components, and pump or propeller shafting. Monel is a family of alloys, so an order should identify the precise alloy and specification rather than use only the trade name.

Download the Mozaic Monel Alloy 400 Round Bar technical reference sheet (PDF)

Monel Alloy 400 Round Bar — Technical Specifications

Reference chemistry and properties; verify against ordered specifications
Property or designation Reference information
Alloy designation Monel 400 / UNS N04400 / W.Nr. 2.4360 or 2.4361
Rod/bar purchasing specification ASTM B164, where applicable
Nickel including cobalt 63.0 wt% minimum
Copper (Cu) 28.0–34.0 wt%
Iron (Fe) 2.5 wt% maximum
Manganese (Mn) 2.0 wt% maximum
Carbon (C) 0.30 wt% maximum
Silicon (Si) 0.50 wt% maximum
Density Approximately 8.80 g/cm³

Reference values only; the actual mill test report and ordered specification control. Mechanical properties, dimensional suitability, and performance vary by processing and condition.

Applications and Grade Selection

Monel 400 is a nickel-copper solid-solution alloy. Precipitation-hardenable Monel K-500 is a distinct grade with different properties. Monel 400 also should not be confused with chromium-bearing Inconel alloys. Selection must account for fluid chemistry, operating conditions, design stresses, and the specified material standard.

Precision Ground Bar Stock and Purchasing

Mozaic can review Monel bar sourcing and precision grinding, straightening, finishing, and cut-to-length requirements. Provide material specification, condition, finished OD and tolerance, length, quantity, and traceability needs. Related applications are discussed in our nickel-alloy shafting overview. See Mozaic’s centerless grinding services.

Common Questions

Is Monel a kind of stainless steel?

No. Monel is a nickel-copper alloy family, whereas stainless steels are iron-based chromium alloys.

Is Monel 400 equivalent to Monel K-500?

No. K-500 is precipitation-hardenable and must be ordered as its own designated alloy.

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For quotation and availability, contact Mozaic Precision Metals, email sales@mozaicprecision.com, or call 847-637-8379.

Technical source: manufacturer / industry alloy reference. This Mozaic reference is not a mill certification.

Get High-Quality Monel Alloy Products from Mozaic Precision Metals

If you’re sourcing premium Monel alloy products, Mozaic Precision Metals is your trusted partner. We provide a full range of Monel materials—including bars, rods, sheets, plates, pipes, wires, and fittings—available in multiple grades such as Monel 400, K-500, and R-405.

Why Choose Monel Alloys?

Monel alloys are nickel-copper-based materials known for their exceptional combination of strength, toughness, and resistance to corrosion and high temperatures. These properties make them indispensable in industries that operate in harsh or marine environments. Key benefits include:

  • Corrosion Resistance: Excellent performance in seawater and chemical processing environments.
  • High Strength & Toughness: Maintains durability under mechanical and thermal stress.
  • Versatility: Suitable for aerospace, marine, chemical, and oil & gas applications.

Applications of Monel Alloy Products

  • Aerospace: Engine components, fasteners, and structural parts
  • Marine: Propeller shafts, seawater valves, and pump components
  • Chemical Processing: Heat exchangers, reactors, and piping systems
  • Oil & Gas: Downhole equipment and processing systems exposed to corrosive fluids

Mozaic Precision Metals: Your Trusted Source

With over 60 years of combined leadership experience in precision grinding, Mozaic Precision Metals delivers Monel alloy products tailored to exact specifications. Our precision-ground bar stock and value-added services ensure consistency, quality, and reliability for every order.

Looking for high-quality Monel alloy products? Request a custom quote today and partner with Mozaic Precision Metals for proven material solutions.

Why Monel Steel is the Go-To Material for High-Stress Applications

Monel steel is a nickel-copper alloy renowned for its outstanding mechanical strength, toughness, and corrosion resistance. With a composition that includes nickel, copper, iron, and trace elements, Monel delivers a unique balance of durability and versatility—making it the preferred choice for demanding, high-stress environments.

Key Advantages of Monel Alloy

  • Exceptional Corrosion Resistance: Performs reliably in seawater, acids, alkalis, and other corrosive environments. Its resistance to stress-corrosion cracking ensures durability in challenging applications.
  • High Strength and Toughness: With excellent mechanical properties, Monel withstands extreme stress and heavy loads without compromising performance.
  • High-Temperature Performance: Maintains strength and integrity in elevated temperatures, making it suitable for thermal cycling and high-heat environments.
  • Thermal Stability: Offers good thermal conductivity and low thermal expansion, ensuring dimensional stability under fluctuating temperatures.
  • Durability: Its long service life reduces replacement costs, making it a cost-effective solution for long-term applications.

Applications of Monel Steel

Mozaic Precision Metals supplies Monel alloy in multiple forms—including sheets, bars, and pipes—catering to a wide range of industries. Common applications include:

  • Marine and offshore equipment
  • Chemical and petrochemical processing
  • Pumps, valves, and piping systems
  • Aerospace and defense components
  • Heat exchangers and high-temperature parts

Why Choose Mozaic Precision Metals?

With over 60 years of combined expertise in precision grinding and specialty alloys, Mozaic Precision Metals is committed to delivering high-quality Monel products tailored to your needs. Whether you require corrosion resistance, high strength, or long-term reliability, our team ensures you get the right alloy in the right form—delivered on time and to specification.

Contact Mozaic Precision Metals today to request a quote for Monel steel and discover why it remains the go-to material for high-stress applications.