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We are a leading stockholder and global supplier of metals and plastics into Aerospace & Space, Chemical, Defence, Medical, MRO, Naval, Nuclear, Oil & Gas and Power industries.

We make high quality materials available in a fast, cost-effective and convenient package and provide a consistent supply path for all our customers.

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DEF STAN 02-879 (Annex B) Grade 1

For marine and chemical applications

DEF STAN 02-879 (Annex B) Grade 1 often finds use in the production of propeller sleeves.

DEF STAN 020-879 is a copper-nickel alloy - the British standard equivalent specification for copper-nickel 70/30.

The alloy offers the same benefits and characteristics but with a subtle difference. The production process includes tighter chemistry / mechanical property controls and a specified impact value. The specification supersedes DEF STAN 02-780 and NES 780.

Alloy Performance

The alloy consists of a 70/30 mix of copper and nickel, respectively, with slight traces of iron and manganese. Compared to copper-nickel alloy 90/10, the engineering material offers better capabilities in more hostile operating environments, including high-velocity water. Our material combines good strength (slightly better than 90/10) with good toughness and offers excellent corrosion resistance. Pitting resistance is also superior, particularly in marine environments.

The alloy offers good resistance to biological fouling, making the product highly suitable for above-sea and subsea applications, including piping and fittings, pump components and valves. DEF STAN 02-879 is readily weldable and straightforward to fabricate and cold work.

DEF STAN 02-879 (Annex B) Grade 1 Copper Nickel Datasheet

Engineering Applications

The alloy finds use in market sectors including above-sea and subsea, marine, naval, power generation, nuclear, chemical and petrochemical.

The material should be considered for applications requiring excellent corrosion resistance (particularly in salt water) where good levels of strength and toughness are a prerequisite. We specialise in the supply of copper-nickel alloys for such applications.

Product Features:

    DEF STAN 02-879 Annex B
    DEF STAN 02-780

    Flanges, pumps and valves
    Propeller sleeves
    Pipework and fixings
    Heat exchangers

    Good strength and toughness
    Produced with tighter controls
    Excellent corrosion resistance
    Impressive biofouling capabilities

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