ThePipingMart Blog Grades Monel K500- Properties, Uses, Composition

Monel K500- Properties, Uses, Composition

What is Monel k500

What is Monel K500?

Monel K500 is an alloy composed of Nickel and Copper with additional amounts of Iron, Manganese, and Aluminum that provides superior corrosion resistance as well as excellent strength at elevated temperatures. Its low coefficient of thermal expansion makes it ideal for precision parts, while its outstanding fatigue resistance allows it to outperform other materials under repeated loading cycles or stress fatigue conditions, making it the perfect choice for engineers looking for all-around performance from their materials selection process.

Monel K500 chemical composition

Monel K500 consists primarily of Nickel (67%) and Copper (30%) but also contains small amounts of Iron (2%), Manganese (.50%), and Aluminum (.50%). This combination makes it highly resistant to corrosion in both freshwater and saltwater environments. Chemical Composition, %

Ni Cu Al Ti C Mn Fe S Si
63.0-70.0 Remainder 2.30-3.15 .35-.85 .25 max 1.5 max 2.0 max .01 max .50 max

Monel K500 Chemical Properties

The chemical properties of Monel K500 make it well-suited for use in applications where high levels of corrosion resistance are required. It is highly resistant to sulfuric acid, hydrochloric acid, acetic acid, phosphoric acid, formic acid, and other acids. It also exhibits good corrosion resistance in citric acid solutions at temperatures up to 200F (93C).

Monel K500 Physical Properties

Monel K500 has excellent strength at elevated temperatures, which makes it ideally suited for high-temperature applications such as furnace components or boilers. It is also non-magnetic, which makes it suitable for use in electronic components or equipment that may be exposed to electromagnetic fields. Its low coefficient of thermal expansion makes it an ideal choice for precision parts that require a tight tolerance range when exposed to temperature changes.

Monel K500 mechanical properties

Monel K500 has excellent tensile strength and flexibility, which makes it suitable for use in a variety of engineering applications such as pipe fittings or valves where strength is necessary, but flexibility is also needed. It also has outstanding resistance to fatigue which allows it to perform better than other materials under repeated loading cycles or stress fatigue conditions.

Hardness (HB) Ultimate Tensile Strength (N/mm²) Proof Stress (N/mm²) Elongation (%)
27-35 HRC 970-1000 690-760 15-20

Monel K500 material properties

Monel K500 is a nickel-copper alloy used for its excellent corrosion resistance in many environments. Its properties make it ideal for use in chemical processing and marine applications, as well as specialized fasteners and valves. This material offers high strength and hardness at temperatures up to 1000°F (538°C) with the added benefit of being easy to weld, fabricate, and machine. The monel k500 material can withstand extreme temperatures without losing its corrosion resistance or formability. Additionally, monel k500 shows good electrical conductivity and thermal conductivity for applications requiring high performance in extreme climates. The monel k500 material also offers excellent machinability, formability, and ductility, making it an ideal choice for many industries such as aerospace, oil & gas, and electronic components.

Monel K500 equivalent

  • Monel Alloy K500, Nickel K500 (NA18, N05500)
  • 2.4374
  • 2.4375
  • NA18
  • N05500
  • BS3076
  • ASTM B865
  • AMS 4676
  • NiCu30Al (DE)


Nickel Alloy Werkstoff material No. EN UNS
K-500 2.4375 NiCu30Al N05500

Monel K500 uses

Monel K500 is an alloy of nickel and copper known for its exceptional strength, corrosion resistance, and temperature endurance. It is thus an ideal material for a variety of uses, including the production of valves, pumps, shafts, and fasteners used in desalinization systems, oil refining operations, and a host of other industries where long-lasting and reliable parts are needed. Monel K500 can also withstand high temperatures without losing its strength, making it invaluable on airplanes where components must be able to endure temperatures as high as 1200°F. Due to its durability and use in many industries vying for dependable materials, Monel K500 has become a vital component in many product applications.

  • Monel K500 is an alloy that is composed of nickel, copper, iron, manganese, carbon, and silicon.
  • Monel K500 is known for its high strength and corrosion resistance.
  • Monel K500 is often used in the chemical industry, as it is resistant to various corrosive chemicals.
  • Monel K500 is also used in the marine industry, as it is resistant to saltwater corrosion.
  • Monel K500 can also be used in high-temperature applications, as it has a higher melting point than other alloys.

Monel K500 hardness

Monel K500 is one of the more complex monel alloys, making it well-suited for demanding use in applications such as deep sea infrastructure, gas, and oil production systems, pumps, valves, and fasteners. This unique monel alloy features an impressive hardness of up to 54 HRC on the Rockwell C-scale. It has a high dynamic strength that allows it to resist dynamic stresses associated with marine hardware and components exposed to saltwater spray. Monel K500 also exhibits significant corrosion resistance, making it essential for various environmental conditions. This model alloy’s unique combination of properties means it’s a preferred material for many demanding industrial applications.

Corrosion Resistance

Monel K500 is exceptionally resistant to corrosion. This makes it ideal for use in applications where corrosion resistance is important, such as in saltwater environments or environments with high levels of acidity or alkalinity. It can also be used for components exposed to high levels of humidity or other corrosive elements without fear of damage or degradation over time.

Monel K500 machinability

Machining Monel K500 has been a complex challenge for many machinists. This nickel-copper alloy is notoriously difficult to work with due to its high hardness, and even small amounts of impurities can cause headaches while working. Machinists must take great care to ensure that they use the correct cutting speeds, feeds, and drill bits to avoid sudden tool failures or poor surface finishes. Luckily, some operators have mastered the art of working with Monel K500, allowing them to achieve precise results efficiently and effectively.

Heat Resistance

Monel K500 has excellent heat resistance properties. It can withstand temperatures up to 1600 degrees Fahrenheit (870 degrees Celsius) without any damage or loss of strength. This makes it perfect for applications where components must be exposed to extremely high temperatures, such as aircraft engines and exhaust systems.

Monel K500 thermal conductivity

Monel K500 has excellent thermal conductivity properties as well. This means that it can efficiently transfer heat away from components that are under extreme stress or strain due to temperature changes or prolonged exposure to intense heat sources. This makes it an ideal material for parts and components subjected to extreme temperatures regularly.

Monel K500 heat treatment

Monel K500 can also be heat treated for further strength and longevity purposes if necessary. Heat treating is a process that involves heating the material to specific temperatures followed by controlled cooling rates until the desired microstructure is achieved. Heat treatment helps improve overall mechanical properties like ductility, hardness, yield strength, etc., making parts more durable and resistant to wear and tear over time.




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Monel K500- Properties, Uses, Composition

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