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MONEL K-500（UNS N05500） Bar/Rod
Age-Hardenable Nickel-Copper Alloy for High Strength and Corrosion Resistance
MONEL K-500 bar is widely used for machined components requiring exceptional corrosion resistance in aggressive process media. The alloy resists pitting, crevice corrosion, and chloride stress corrosion cracking, and maintains excellent corrosion performance in welded and fabricated structures due to its extremely low carbon and silicon.
As a professional Chinese nickel-based alloy manufacturer, we supply MONEL K-500 bars with stable chemistry, consistent mechanical properties, and flexible dimensional customization for global industrial users.
Typical supply range (custom sizes and tolerances available upon request):
Item | Range / Options | Notes |
Diameter | 6 – 450 mm | Round bar standard; square/flat/hex available by request. |
Length | Up to 6000 mm | Cut-to-length (sawing) by agreement; define tolerance if critical. |
Shape | Round / Square / Flat / Hex | Forged / hot-rolled / cold-drawn per size requirement. |
Surface finish | Black / Peeled / Ground / Polished | Surface machining available for tight tolerance. |
End | Saw-cut / Facing / Chamfer | End prep available for machining and assembly. |
Straightness / tolerance | Per ASTM/EN or as agreed | Define straightness for long shafts and precision parts. |
Delivery condition | Solution annealed (annealed) / age-hardened (aged, optional) | Aged (precipitation-hardened) available per strength requirement. |
Dimension definition: DIA × LENGTH.
• Age-hardenable (precipitation-hardenable) for high strength and hardness
• Excellent corrosion resistance in seawater, brines, and many chemical environments
• Good resistance to corrosion fatigue and erosion in marine service
• Low magnetic permeability, suitable for non-magnetic components
• Maintains strength and ductility from cryogenic temperatures to moderate elevated temperatures
• Suitable for high-strength shafts, fasteners, springs, and downhole tools
Element | Ni (+Co) | Cu | Al | Ti | Fe | Mn | Si | C |
MONEL K-500 | 63.0 min. | 27.0–33.0 | 2.30–3.15 | 0.35–0.85 | ≤2.0 | ≤1.5 | ≤0.5 | ≤0.25 |
Sulfur ≤ 0.01 max. Composition shown is limiting chemistry for MONEL alloy K-500.
Property | Value |
Tensile Strength (Rm) | 621–1310 MPa |
Yield Strength (Rp0.2) | 276–1034 MPa |
Elongation | 13–45 % |
Hardness | 75–90 HRB / 24–41 HRC |
Mechanical properties depend on product form, size, temper (annealed/cold-worked/aged), and heat treatment.
Standard System | Specification |
ASTM / ASME | ASTM B865 / ASME SB-865 |
EN | EN 10204 (3.1 certificate available) |
UNS | N05500 |
DIN | 2.4375 |
JIS | — |
Item | Range |
Diameter | 6 – 450 mm |
Length | Up to 6000 mm |
Shape | Round / Square / Flat / Hex |
Surface Finish | Black / Peeled / Ground / Polished |
End | Saw-cut / Facing / Chamfer |
Custom sizes, tight tolerances, and cut-to-length service are available upon request.
• Solution annealed (annealed)
• Age-hardened (aged) / stress relieved (optional)
• Marine pump shafts, propeller shafts, and seawater hardware
• Oil & gas downhole tools, packers, subsurface safety valves, and instrumentation
• High-strength fasteners, springs, chains, and cables for marine service
• Pump and valve components for chemical processing equipment
• Non-magnetic housings and precision components for instruments
• Doctor blades and scrapers for pulp and paper processing
• Components requiring corrosion resistance with higher mechanical strength than MONEL 400
MONEL K-500 can be fabricated and welded using standard nickel-copper alloy practices.
Common welding methods include:
• GTAW (TIG)
• GMAW (MIG)
• SMAW
Matching nickel-copper filler metals (ENiCu/ERNiCu family, e.g., ERNiCu-7) are commonly used; final selection depends on service environment and required properties.
• EN 10204 3.1 Material Test Certificate
• Chemical composition analysis
• Mechanical testing (tensile, hardness)
• PMI / XRF testing available
• Dimensional inspection
• Third-party inspection on request (BV, SGS, TUV, DNV)
• PVC protective film on surface (where applicable)
• Wooden pallets or export-grade crates
• Seaworthy packaging for long-distance shipment
• Global delivery by sea, air, or multimodal transport
• Professional nickel-based alloy manufacturer in China
• Stable raw material sourcing and melting control
• Wide stock and fast production cycle
• Competitive pricing for global projects
• Experience with international EPC, OEM, and distributors
For quotation or technical consultation, please provide:
• Required grade (MONEL K-500)
• Diameter × Length
• Quantity
• Surface finish / delivery condition / temper
• Application environment
Our technical team will respond with datasheets, pricing, and delivery schedule promptly.
