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Monel K500
Monel Alloy K-500
Monel alloy K-500 is a precipitation-hardenable nickel-copper alloy built to combine Monel’s excellent corrosion resistance with much higher strength and hardness. Its chemistry is tightly controlled: nickel (plus cobalt) is the principal element (minimum ~63%), copper is the next largest component (about 27–33%), and small, deliberate additions of aluminum (≈2.30–3.15%) and titanium (≈0.35–0.85%) enable age hardening. Trace amounts of iron, manganese, carbon, silicon and sulfur are held to low limits so the alloy will form the fine Ni3(Ti,Al) precipitates that give K-500 its strengthened structure.
Parag Metals is a trusted Monel K-500 supplier, offering this material in various forms such as sheets, plates, bars, wire and tubes for various industries and uses. We hold common tempers and support fabrication for pump shafts, valve trim, springs and corrosive-service fasteners, and we work with customers on material equivalents and mill specifications to match field requirements.
Why Choose Monel K500 – Performance Advantages
Monel K500 is a nickel-copper alloy that has been hardened by precipitation. It is made for uses that need both high mechanical strength and good resistance to corrosion. It has much higher tensile and yield strength than regular Monel grades and it still works well in harsh environments.
Key performance advantages of Monel K500 include:
- Age-hardening gives it a lot of strength making it good for heavy duty mechanical parts.
- It is very resistant to corrosion in marine, offshore and chemical settings.
- Higher resistance to wear and fatigue than Monel 400
- Good toughness and stability in size when subjected to dynamic and impact loading
- Monel K500 is widely used in important applications where reliability, strength and resistance to corrosion are very important because of these qualities.
Table of Content
Monel K-500 Sheet, Monel K-500 Plate, Monel K-500 Coils, Monel K-500 Rods, Monel K-500 Wires Suppliers in Mumbai, India.
In typical conditions the alloy covers a wide strength window that depends on heat treatment. In the annealed state K-500 is relatively ductile and easy to machine; tensile strength near 92 ksi with high elongation is common. After controlled solution treatment and aging the alloy develops much higher strength, age-hardened tempers commonly fall into a range of roughly 145–196 ksi, with corresponding rises in yield and Rockwell C hardness (typical HRC values move from the mid-20s in softer tempers to the mid-30s or higher in fully aged conditions). Typical age-hardening cycles used by industry are in the region of about 980–1125°F (527–607°C) depending on desired properties. These characteristics make K-500 useful where the combination of corrosion resistance and high strength is required.
K-500 also shows steady physical constants designers rely on: density is about 8.44 g/cm³, melting occurs roughly in the 2400–2460°F (1315–1350°C) band, and thermal conductivity is moderate. The alloy is essentially non-magnetic at ordinary temperatures and performs well in seawater and many chloride-bearing environments; service limits depend on component design and temper (springs are commonly used to around 500°F / 260°C, while prolonged exposure at much higher temperatures causes overaging and softening).
Monel K-500 Specification
UNS N05500 (W.Nr. 2.4375) is produced considering international mill standards for bar, rod, plate, sheet, strip, tube, wire and forgings. Users typically specify form, temper and applicable ASTM/ASME purchase standards when ordering to ensure the right material performance.
| Product | Monel K-500 |
|---|---|
| Equivalents | Alloy K-500, UNS N05500, W.Nr. 2.4375 |
| Items | Pipe, Tubes, Tubing, Fittings, Flanges, Valves, Fasteners, Sheet, Square Bar, Threaded Bar, Plate, Hexagon Bar, Fasteners and Fixings, Round Bar, Flat Bar, Rebar, Angle, Tube & Pipe, Wire |
| Size | 1/4″ – 60″ |
| Pipe Type | Seamless, Welded, ERW, Fabricated, Custom Size Pipes |
| Specifications | ASTM, ASME, DIN, GOST, JIS |
| Fittings Type | Butt Weld, Screwed & Socket Weld, Flanges, Instrumentation |
| Other Fittings | Elbows, Tees, Reducers, Caps, Stub Ends, Flanges (ANSI, Table E, D and H), Nuts, Bolts, Screws, Threaded Bars |
Monel Alloy K-500 Chemical Composition
Alloy K-500 primarily composed of nickel and copper, with controlled additions of aluminum and titanium that enable age hardening, while other elements are kept at low levels to preserve the alloy’s corrosion resistance and formability
| Element | Min% | Max% |
|---|---|---|
| Ni | 63 | – |
| Al | 2.3 | 3.15 |
| C | – | 0.18 |
| Fe | – | 2.4 |
| Mn | – | 1.5 |
| Si | – | 0.5 |
| Ti | 0.35 | 0.85 |
| S | – | 0.01 |
| Cu | 27 | 33 |
Monel K-500 Mechanical Properties
Properties change with heat treatment: soft tempers are ductile and easier to machine; aged tempers are much stronger and harder. Because strength and toughness trade off with each other, manufacturers tailor solution treatments, aging cycles and optional cold work to reach the right balance for springs, shafts or fasteners.
| Tensile Strength, min. | Yield Strength, min. | Elongation, min. | Hardness, min. |
|---|---|---|---|
| 1100 MPa / 160 ksi | 790 MPa / 115 ksi | 20% | 300 HB |
Corrosion Resistance of Monel K500
Monel K500 provides excellent corrosion resistance across a wide range of aggressive environments, particularly in marine and offshore conditions. Its nickel-copper composition allows it to perform reliably where both mechanical stress and corrosion exposure are present.
| Environment | Corrosion Resistance |
|---|---|
| Seawater & Marine Atmosphere | Excellent |
| Chloride-Containing Solutions | Very Good |
| Dilute Sulfuric Acid | Very Good |
| Alkalis & Caustic Solutions | Good |
| Hydrogen Sulfide (H₂S) | Very Good |
Monel K500 is a great material for shafts, fasteners, springs and structural parts that are exposed to seawater and chemicals as it is strong and resistant to corrosion.
Nickel Alloy K-500 Physical Properties
K-500 offers steady density, melting range and stability that suit marine and chemical uses. It machines and welds with standard procedures if treated appropriately and is commonly chosen where chloride exposure and high stress coincide
| Density | Melting Range | Specific Heat | Electrical Resistivity |
|---|---|---|---|
| 8.44 g/cm³ | 2400–2460 °F | 419 J/kg·K / 0.1 Btu/lb·°F | 615 µΩ·m |
Application of Monel K500
Available Monel K500 Product Forms
Frequently Asked Questions (FAQs)
What is the Monel K500 used for?
- Monel K500 is mainly utilized in the marine engineering, offshore, oil and gas, chemical processing, aerospace and power generation sectors for parts that are made with the combination of high strength and corrosion resistance.
Is the Monel K500 stronger than the Monel 400?
Monel K500 provides a much greater strength level than Monel 400 as it is precipitation hardened. Both the alloys have similar corrosion resistance.
Can Monel K500 be welded?
Monel K500 is weldable by using proper welding methods and compatible filler materials.It depends on the nature of the application, post weld heat treatment might be necessary.
Is the Monel K500 suitable for marine environments?
- Monel K500 is very resistant to seawater and marine atmospheres, hence it is a great choice for offshore and shipbuilding industries.
What temperature range can Monel K500 withstand?
- Monel K500 maintains good mechanical properties over a wide temperature range, making it suitable for both ambient and moderately elevated temperature applications.