Monel Alloy K500


Monel Alloy K500

Monel Alloy K500 (NA18, N05500) is a precipitation hardening nickel copper alloy that retains the excellent corrosion resistance of Monel Alloy 400 with the added advantage of increased strength and hardness values that can be maintained up to 650ºC. It is widely used in marine environments due to its excellent corrosion resistance, and is often utilised in high-velocity seawater and in stagnant or slow-moving seawater.

Monel Alloy K500 (NA18, N05500) offers an exceptionally high dimensional stability and, as with Monel Alloy 400, its low temperature mechanical properties are very good with no transition temperature, making the alloy suitable for many cryogenic applications. It does, however, have a greater tendency toward stress-corrosion cracking in some environments when in the age-hardened condition, although it displays resistance in a sour-gas environment.

Related Specifications of Monel Alloy K500

  • NA18
  • N05500
  • BS3076
  • ASTM B865
  • AMS 4676
  • 2.4374
  • 2.4375
  • NiCu30Al (DE)

Nominal Composition of Monel Alloy K500

Ni 65.5%, Cu 29.5%, Al 2.7%, Ti 0.6%

Mechanical Properties of Monel Alloy K500

Ultimate Tensile Strength (N/mm²) Proof Stress (N/mm²) Elongation (%) Hardness (HB)
970-1000 690-760 15-20 27-35 HRC

Key Features of Monel Alloy K500

  • Excellent strength and toughness levels
  • Excellent corrosion resistance in marine environments
  • Good resistance to non-oxidising acids, alkali and salts
  • High retention of properties at elevated temperatures

Applications of Monel Alloy K500

Offshore & marine | Marine propeller shafts, pump shafts, impellers, valve trim, drill collars, high strength fasteners and bolting

Other | Oil well surveying equipment, cryogenic equipment springs and electronic components

Columbia Metals – a leading supplier of Monel Alloy K500

With decades of experience and a huge range of stock, Columbia Metals is an industry leader in the supply of Monel Alloy K500 and other high quality specialist engineering alloys.

To buy or learn more about Monel Alloy K500 contact us now, or fill in the enquiry form on the right hand side and we will be in touch shortly.

  Related Specifications Mechanical Properties
Alloy Name BS UNS BS EN Others Ultimate Tensile Strength N/mm² Minimum Yield Strength N/mm² Elongation % Hardness HB  
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