DEF STAN 02-833 / NES 833

DEF STAN 02-833, or NES 833, is a nickel aluminium bronze manufactured to the exacting requirements of the Ministry of Defence (MoD). This grade has been developed primarily for offshore and marine applications and features high strength, excellent corrosion resistance in seawater and many other aggressive media and high wear and abrasion resistance.

The particular characteristics of DEF STAN 02-833 that enable its impressive physical properties include a nickel content exceeding the iron content in order to achieve good corrosion resistance. The MoD also specifies impact properties on sizes above 15mm diameter and a full ultrasonic inspection in order to conform with the requirements of DEF STAN 02-729 Part 5. Heat treatment is carried out on smaller diameter rods to control the microstructure and phases present.

Related Specifications of DEF STAN 02-833

  • CA104
  • CW307G
  • DGS1043
  • DGS8452
  • 2.0966
  • NF A51-116
  • CuAl10Ni5Fe4

Nominal Composition of DEF STAN 02-833

Cu rem, Al 10.0%, Fe 5.0%, Ni 5.0%

Mechanical Properties of DEF STAN 02-833

Ultimate Tensile Strength (N/mm²) Proof Stress (N/mm²) Elongation (%) Hardness (HB)
620-680 245-325 17  

Key Features of DEF STAN 02-833

  • High strength and toughness
  • Outstanding resistance to erosion and corrosion
  • High wear and galling resistance
  • Excellent mechanical properties at sub-zero temperatures
  • Ultrasonically tested

Applications of DEF STAN 02-833

Offshore & marine | High performance fasteners, valve and pump components, propeller shafts and weapons handling systems

Other | Pipe fittings, heat exchangers, wear plates, thrust washers, bearings, bushes, safety tools, worm wheels and gears

Case Study

DEF STAN 02-833: nuts in a gas supply system

Columbia Metals - a leading supplier of DEF STAN 02-833

With decades of experience and a huge range of stock, Columbia Metals is an industry leader in the supply of DEF STAN 02-833 and other high quality specialist engineering alloys.

To buy or learn more about DEF STAN 02-833 contact us now, or fill in the enquiry form on the right hand side and we will be in touch shortly.

 Click here to download a DEF STAN 02-833 data sheet.

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