Monel K-500

Update : 2026-02-25

Monel K-500
Monel K-500 is a precipitation-hardening nickel-copper alloy that combines excellent corrosion resistance with significantly higher strength and hardness than Monel 400. It exhibits outstanding resistance to seawater, sour gas, pitting, and stress corrosion cracking. The alloy maintains good mechanical properties at both low and elevated temperatures, with excellent fatigue and erosion resistance. It offers good fabricability and can be strengthened by age hardening. Widely used in marine and oilfield services, it is ideal for components requiring high strength and superior corrosion resistance.
Equivalent Grade

UNS N05500

W.Nr.: 2.4375

Chinese Standard: NS3103

Standard

● Sheet/Plate: ASTM B865

Seamless Pipe: ASTM B866

Bar: ASTM B864

Precipitation hardening nickel-copper alloy standard, emphasizing mechanical strength requirements

Alloy TypeNickel-Copper-Aluminum-Titanium Alloy (Precipitation Hardening Type, Corrosion-Resistant and High-Strength Type)
StandardSheet, Bar, Pipe, Tube, Fittings, Flange, Welding Materials, Forgings, Wire, Precision Forgings, Wear-Resistant Parts
Key Properties

● Inherits the excellent corrosion resistance of Monel 400, resistant to seawater, fluorides, neutral/alkaline media, and outstanding resistance to hydrofluoric acid

Far higher strength than Monel 400 after precipitation hardening, with high hardness and excellent wear resistance

Good toughness, no stress corrosion cracking tendency, and good high-temperature stability

Good hot and cold forming performance, good weldability, and post-weld aging treatment required for strengthening

Applicable EnvironmentHigh-stress corrosion-resistant scenarios, deep-sea and offshore engineering, fluorine chemical industry, oil and gas extraction, shipbuilding, precision machinery, wear-resistant working conditions
Typical ApplicationsDeep-Sea Mining Equipment, Marine Propellers, Valve Cores, Pump Shafts, Oil And Gas Pipeline Connectors, Fluorine Chemical Reactors, Precision Wear-Resistant Parts, Core Components Of Instrumentation, etc.


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