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
- NF A51-116
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)|
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
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.
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