Monel K500

Monel K-500 High Strength Alloy

Monel® K-500

UNS N05500 | W.Nr. 2.4375 | Alloy K-500

Monel K-500 is a precipitation-hardenable nickel-copper alloy. It combines the excellent corrosion resistance characteristic of Monel 400 with the added advantages of greater strength and hardness, achieved through the addition of aluminum and titanium and a controlled heat treatment cycle.

  • Forme comuni: Round Bar, Shafting, Rod, Forgings, Wire.
  • Caratteristiche principali: High strength (approx. 3x the yield strength of Monel 400).
  • Special Property: Non-magnetic, even at temperatures as low as -200°F.
  • Condition: Typically supplied in the age-hardened condition.
Why Choose Monel K-500?

Select Monel K-500 when you need the corrosion resistance of the standard nickel-copper alloy but require significantly higher mechanical properties. Its unique combination of high strength, corrosion resistance, and non-magnetic properties makes it ideal for demanding applications.

High Strength & Hardness

Through age-hardening, K-500 achieves yield strengths up to 110 ksi (compared to ~30 ksi for annealed Monel 400), making it suitable for heavy-duty shafts.

Resistenza alla corrosione

Maintains virtually the same outstanding resistance as Monel 400 to sea water, sour gas environments, and various chemical process streams.

Non-Magnetic

Remains non-magnetic down to cryogenic temperatures, a critical property for electronic housing and specialized oilfield survey instruments.

Composizione chimica (%)
Elemento Contenuto (%)
Nichel (Ni) 63,0 min
Rame (Cu) 27.0 - 33.0
Alluminio (Al) 2.30 - 3.15
Titanio (Ti) 0.35 - 0.85
Ferro (Fe) 2.0 max
Manganese (Mn) 1,5 max
Carbonio (C) 0.18 max

*Note: The additions of Aluminum and Titanium are what allow this alloy to be age-hardened.

Specifiche standard
Forma del prodotto Standard ASTM / ASME
Bar, Rod, Wire ASTM B865, ASME SB865 (Supersedes B164 for K-500)
Forgiati ASTM B564, ASME SB564
Tubi e tubature (senza saldatura) ASTM B163 (Condenser Tubes), ASTM B165
Proprietà meccaniche (tipiche della tempra per invecchiamento)
Proprietà Valori tipici (temperatura ambiente)
Resistenza alla trazione 140 - 190 ksi (965 - 1310 MPa)
Resistenza allo snervamento (offset 0,2%) 100 - 160 ksi (690 - 1100 MPa)
Allungamento 30 - 20 %
Durezza (Rockwell C) 27 - 38 HRC

*Note: Properties shown are for material in the fully age-hardened condition, which provides maximum strength.

Applicazioni tipiche

Marine Propeller Shafts

Used for high-performance boat shafts requiring high fatigue strength and seawater corrosion resistance.

Oil & Gas Drilling

Non-magnetic drill collars, safety lifts, and valve components for sour gas (H2S) service.

Pump & Valve Trim

Impellers, pump shafts, and valve stems handling corrosive liquids where high wear resistance is needed.

Molle e dispositivi di fissaggio

High-strength springs and fasteners that must operate in corrosive environments without failing.

Need High-Strength Monel K-500?

We specialize in Monel K-500 shafting and bar stock. Contact our metallurgists today for pricing and heat treatment options.

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