Monel® K500 Wire UNS N05500

Alloy K500 is a nickel copper alloy which combines the excellent corrosion resistance of Alloy 400 with the added advantages of greater strength and hardness.

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Shaped, Flat, Square, Round, Fine Wire, Plated and Un-plated ASTM B865, AMS 4676, QQN286

Alloy K500 Description

Alloy K500 is a nickel copper alloy which combines the excellent corrosion resistance of Alloy 400 with the added advantages of greater strength and hardness. The increase in strength and hardness is a result of the precipitation hardening capability gained by the additions of titanium and aluminum.


Chains and cables
Pump components
Marine instruments
Doctor blades and scrapers for pulp and paper production
Electronic components

Chemistry Typical

Nickel: 63.0 min
Copper: 27.0-33.0
Aluminum: 2.30-3.15
Titanium: 0.35-0.85
Iron: 2.00 MAX
Phosphorus 0.020 max
Sulfur: 0.010 max
Silicon: 0.050 max
Manganese: 1.50 max
Carbon: 0.25 max

Physical Properties

Density, 0.305 lbs/in³, 8.44 g/cm³

Mean Coefficient of Thermal Expansion: in/in/°F (mm/m/°C): 70- 212°F(20-100°C): 7.6 x 10 (13.7)

Modulus of Elasticity: KSI (MPa) 26x 10³ (179 x 10³) in Tension

Magnetic Permeability, H = 200: Annealed <1.002

Melting Point: 2460°F (1350°C) approx.

Mechanical Properties at Room Temperature

Properties: Annealed

Ultimate Tensile Strength: 90 KSI min (620 MPa min)
Yield Strength: 40 KSI min (275 MPa min)
Elongation: 30% min
HV 170 max: gauges ≤ 0.010 inches
Rb 85 max: gauges > 0.010 inches


Alloy K500can be cold rolled to achieve the temper properties required by specific customers and/or manufacturing requirements. Contact Ulbrich Wire for details

Heat Treat Capabilities


Ultimate Tensile Strength: 130 KSI min (895 MPa min)

Yield Strength (0.2% offset): 90 KSI min (620 MPa min)

Elongation: 15% min

Hardness: Rc 24 min
Half Hard & Aged

Ultimate Tensile Strength: 145 KSI min (1000 MPa min)

Yield Strength (0.2% offset): 110 KSI min (760 MPa min)

Elongation: 8% min

Hardness: Rc 30 min
Full Hard & Aged

Ultimate Tensile Strength: 170 KSI min (1170 MPa min)

Yield Strength (0.2% offset): 140 KSI min

Elongation: 5% min

Hardness: Rc 34 min

Additional Properties

Corrosion Resistance

Refer to NACE (National Association of Corrosion Engineers) for recommendations.

Standard Wire Finishes

Extra Clean: Extra clean is also referred to as “bright annealed” or “bright annealed and cold rolled”

Grease (round wire only): Drawn in a heavy grease produces an “Ultra bright” finish for decorative applications

Soap (round wire only): Soap is used as a lubricant in the drawing process and is not removed. It acts as a lubricant during customer part forming operation.

A soap finish is available in tempered products.
Plated: Many plating options are available.
*Special finishes are available: Contact Ulbrich Wire Sales with special finish and plating requests.


Continuous Coils
Cut to lengths
Precision cutting


For best results refer to: SSINA’s “Welding of Stainless Steels and Other Joining Methods”

Monel® K500 is a registered trademark of the INCO family of companies.

Limitation of Liability and Disclaimer of Warranty: In no event will Ulbrich Stainless Steels and Special Metals, Inc., be liable for any damages arising from the use of the information included in this document or that it is suitable for the ‘applications’ noted. We believe the information and data provided to be accurate to the best of our knowledge but, all data is considered typical values only. It is intended for reference and general information and not recommended for specification, design or engineering purposes. Ulbrich assumes no implied or express warranty in regard to the creation or accuracy of the data provided in this document.

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