UNS N05500 Monel K500 Age Hardenable Nickel Copper Alloy Precision Forging Bar for Oil Gas Pump Shaft Components

UNS N05500 Monel K500 Age Hardenable Nickel Copper Alloy Precision Forging Bar

The UNS N05500 Monel K500 precision forging bar is a precipitation-hardenable nickel-copper alloy that delivers exceptional mechanical strength combined with outstanding corrosion resistance. Manufactured to ASTM B865 specifications, this age-hardenable alloy is engineered for critical oil and gas equipment components, pump shafts, fasteners, and downhole tools where high tensile properties and environmental durability are non-negotiable.

Key Features

• Age-Hardenable High Strength: Precipitation hardening delivers tensile strength exceeding 965 MPa and yield strength above 690 MPa, significantly outperforming standard Monel 400 in load-bearing applications.
• Superior Corrosion Resistance: Excellent resistance to sour gas (H₂S), chloride stress corrosion cracking, and acidic environments commonly encountered in oil and gas production.
• Non-Magnetic Properties: Low magnetic permeability makes it ideal for downhole instrumentation and non-magnetic drill collar components.
• High Fatigue & Impact Resistance: Charpy V-notch impact strength exceeding 60 J ensures reliability under cyclic loading and harsh operating conditions.
• Precision Forging Quality: Tight dimensional tolerances and uniform grain structure achieved through controlled forging processes, minimizing machining allowance.

Chemical Composition (Typical)

Typical Applications

• Oil & Gas Equipment: Pump shafts, valve stems, compressor shafts, and high-pressure fittings for sour service environments.
• Downhole Tools: Non-magnetic drill collar components, MWD/LWD housings, and logging tool parts.
• High-Strength Fasteners: Bolts, studs, nuts, and washers for critical flange connections in offshore platforms and refineries.
• Springs & Flexible Elements: High-strength springs, Belleville washers, and diaphragm seals requiring both elasticity and corrosion resistance.
• Marine Propulsion: Propeller shafts, rudder stocks, and stern tube components for naval and commercial vessels.

Mechanical Properties (Age Hardened Condition)

Available Size Range

• Diameter: 10mm to 300mm (custom diameters available upon request)
• Length: 1,000mm to 6,000mm (longer lengths available upon request)
• Surface Finish: Hot forged, centerless ground, polished
• Tolerance: H8, H9, H10, H11 per customer specification

Quality Assurance

Every lot is supplied with full mill test certification including chemical analysis, mechanical property test results (tensile, yield, elongation, hardness), Charpy impact test, and ultrasonic testing (UT) to ASTM A388 or equivalent. Third-party inspection by SGS, BV, or TÜV available upon request.

Contact us today for a competitive quotation on UNS N05500 Monel K500 precision forging bars for your oil and gas equipment requirements.