Monel K500 Sheet
Precipitation-Hardened Nickel-Copper Alloy Sheet for High-Strength Seawater Applications
Monel K500 sheet combines the superior corrosion resistance of Monel 400 with precipitation-hardening to achieve significantly higher strength. Engineering critical components requiring both exceptional seawater corrosion resistance and elevated mechanical properties from single material.
Quick Specifications
- Nickel Content
- 63-70% (typically 65%)
- Copper Content
- 27-33% (typically 30%)
- Aluminum Content
- 2.3-3.15%
- Titanium Content
- 0.35-0.85%
- Sheet Thickness Range
- 0.5 mm to 6.0 mm
- Tensile Strength (Solution-Treated)
- 550-700 MPa
Standards & Certifications
Product Description
Monel K500 is a precipitation-hardened variant of the Monel 400 base composition, modified through addition of aluminum and titanium elements that enable hardening through controlled heat treatment. The base composition maintains the proven 65% nickel-copper foundation, delivering the same exceptional seawater and acid corrosion resistance as standard Monel 400, while the precipitation-hardened structure provides yield strengths two to three times higher than annealed Monel 400.
The precipitation-hardening mechanism in Monel K500 results from careful heat treatment creating fine gamma-double-prime phases within the nickel-copper matrix. This hardening is achieved without loss of ductility, enabling the material to be supplied in both annealed (solution-treated) and aged conditions. The material can be readily machined, fabricated, and formed in the solution-treated condition, then aged to develop final strength properties.
Monel K500 sheet offers the design engineer unprecedented flexibility: corrosion resistance equivalent to Monel 400 combined with strength properties approaching those of many ferrous alloys. This makes the material particularly valuable for critical applications such as pump shafts, impellers, valves, and specialized marine components where material failure cannot be tolerated. The sheet form is ideal for applications requiring coiling, uncoiling, or progressive stamping into complex geometries.
Monel K500 sheet continues to find application in the most demanding marine and offshore projects where conventional materials cannot provide the required combination of strength and corrosion resistance. From deepwater oil and gas production equipment to specialized naval vessel components, from desalination plant equipment to critical chemical processing vessels, Monel K500 sheet delivers the material reliability that separates successful projects from costly failures.
Specifications
| Nickel Content | 63-70% (typically 65%) |
| Copper Content | 27-33% (typically 30%) |
| Aluminum Content | 2.3-3.15% |
| Titanium Content | 0.35-0.85% |
| Sheet Thickness Range | 0.5 mm to 6.0 mm |
| Tensile Strength (Solution-Treated) | 550-700 MPa |
| Tensile Strength (Aged) | 1000-1150 MPa (premium strength) |
| Yield Strength (Aged, 0.2% offset) | 750-900 MPa |
| Elongation (Aged) | 15-20% |
| Melting Point | 1300-1350°C |
| Density | 8.74 g/cm³ |
| Fatigue Strength (10⁷ cycles, Aged) | 380-420 MPa |
Chemical Composition
| Element | Content (%) |
|---|---|
| Nickel (Ni) | 63.0-70.0 (typical: 65%) |
| Copper (Cu) | 27.0-33.0 (typical: 30%) |
| Aluminium (Al) | 2.3-3.15 (KEY HARDENING ELEMENT) |
| Titanium (Ti) | 0.35-0.85 (KEY HARDENING ELEMENT) |
| Iron (Fe) | 1.0-2.5 |
| Manganese (Mn) | 1.0-2.0 |
| Carbon (C) | 0.15 (max) |
| Sulfur (S) | 0.01 (max) |
Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength (Solution-Treated, RT) | 550-700 MPa |
| Tensile Strength (Aged, RT) | 1000-1150 MPa |
| Yield Strength (Aged, RT, 0.2% offset) | 750-900 MPa |
| Elongation (Annealed) | 25-30% |
| Elongation (Aged) | 15-20% |
| Hardness (Aged, HV) | 350-420 |
| Modulus of Elasticity | 207-214 GPa |
| Impact Strength (Charpy, Aged) | 65+ J |
| Reduction of Area (Aged) | 30-35% |
Key Features & Advantages
Applications
Offshore Oil and Gas Production Equipment
Critical material for deepwater subsea equipment, manifolds, valve bodies, and connector components where superior seawater corrosion resistance combined with high strength is essential for safety and service reliability in harsh offshore environments.
High-Strength Pump Shafts and Impellers
Specified for seawater pump and compressor shafts, impellers, and casings where the combination of seawater corrosion resistance and elevated mechanical strength eliminates potential fatigue or stress-corrosion cracking failure modes.
Deepwater Connector and Fastener Components
Employed in specialized connector bodies, coupling components, and fasteners for subsea applications where both superior corrosion resistance and mechanical reliability at elevated pressures are non-negotiable requirements.
Specialized Marine Valve Components
Applied in valve bodies, seats, stems, and trim for critical marine isolation and control valves. The material's strength enables compact valve designs while the corrosion resistance ensures reliable operation throughout design service life.
Chemical Processing Equipment with Seawater Cooling
Utilized for process equipment requiring both exposure to aggressive chemicals and seawater cooling. The dual corrosion resistance capability of Monel K500 sheet enables integrated equipment design without need for bi-metallic materials.
Advanced Desalination and Water Treatment Systems
Specified for high-pressure reverse osmosis equipment, brine heaters, and specialized process vessels where high strength combined with seawater corrosion resistance enables efficient, reliable long-term operation.
Frequently Asked Questions
What is the aging temperature and time for Monel K500 sheet?
Can Monel K500 sheet be machined after aging?
How does the corrosion resistance of K500 compare to Monel 400?
Can Monel K500 sheet be cold-worked or stress-relieved?
What is the typical lead time for Monel K500 sheet?
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