Alloy 400 & K500 – Alloys in the Spotlight

header imageBoth Alloy 400 (Monel® 400) and Alloy K500 (Monel® K) deliver excellent corrosion resistance in environments containing:

  • Fluorine
  • Hydrofluoric Acid
  • Hydrogen Fluoride
  • Sulphuric Acid
  • Seawater

Although both alloys deliver similar corrosion resistance, Alloy K500 was developed for its greater strength and hardness. However this introduced a greater tendency for stress corrosion cracking in some environments.

alloy equation

The addition of Titanium and Aluminium to Alloy 400 makes age hardening possible.

Key Features of Alloy 400:

  • Excellent resistance to neutral and alkaline salt.
  • Resistant to caustic alkalis.
  • Resistance to stress corrosion cracking.
  • Good mechanical properties from sub-zero temperatures up to 548.88°C

alloy 400 data sheet button

Alloy 400 is also known as UNS N04400, MONEL® 400 and Nickel Alloy 400 (MONEL® 400 is a registered trade name of Special Metals including the former Inco Alloys International Inc.)

Common applications of Alloy 400:

  • Pumps & Valves
  • Chemical Process
  • Marine Engineering
  • Heat Exchangers

Technical Recourses: Burst Pressure Tables – Alloy 400 Seamless Tube

Key Features of Alloy K500:

  • Excellent mechanical properties from sub-zero temperatures up to about 480°C
  • Outstanding corrosion resistance in a variety of environments
  • Resistance to hydrogen sulfide makes Alloy K500 useful in sour-gas environments

alloy 500K data sheet button copy

Common applications of Alloy K500:

  • Pumps & Valves
  • Impellors
  • Scrapers
  • Drill Collars

Alloy K50 is also known as Monel® K, UNS N05500, W.Nr. 2.4375 and Nickel Alloy K500.

*Monel is a registered trademark of Special Metals Corporation.

For more information on Alloy 400 and K500 view our Alloy Performance Guide.

To buy Alloy 400 or K500 or to speak to one of our experts contact us today.

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