Aluminum Bronze with 2% Silicon—DEF STAN 02-834/NES834

The DEF STAN 02-834, or NES834, stocked by Columbia Metals Ltd, is an aluminum bronze containing a 2% silicon addition to improve corrosion resistance, strength, and impact strength when compared to other grades of aluminum bronze. In addition, the silicon content enhances the machinability rating.

DEF STAN 02-879 Annex D is the most recent Defense Standard for this material, and this specification is acknowledged for its controlled low magnetic permeability level of less than 1.005. Impact strength is sustained at cryogenic temperatures.

Related Specifications of DEF STAN 02-834

  • C64200
  • CA107
  • DGS1044
  • DGS8453
  • CW301G
  • NES 834
  • AMS4631
  • CuAl6Si2Fe (EU)
  • DEF STAN 02-879 Annex D

Nominal Composition of DEF STAN 02-834

Al 6.0%, Si 2.2%, Fe 0.6%, and Cu rem

Mechanical Properties of DEF STAN 02-834

Ultimate Tensile Strength (N/mm²) Proof Stress (N/mm²) Elongation (%) Hardness (HB)
515-620 220-310 9-20  

 

Key Features of DEF STAN 02-834

  • Superior corrosion resistance
  • High toughness and strength
  • High impact strength
  • Superior wear resistance
  • Good machinability
  • Superior cryogenic properties
  • Very low magnetic permeability

Applications of DEF STAN 02-834

Offshore and marine—high strength and non-magnetic fasteners and parts

Others—fasteners, gears, safety tooling, marine hardware, non-magnetic parts, valve components, bearings and bushes, and instrumentation parts

Columbia Metals—a Top Supplier of DEF STAN 02-834

With almost 60 years of experience and a large variety of stock, Columbia Metals is an industry leader in the supply of DEF STAN 02-834 and other excellent quality specialist engineering alloys.

Bronze

  Related Specifications Mechanical Properties
Alloy Name BS UNS BS EN Others Ultimate Tensile Strength N/mm² Minimum Yield Strength N/mm² Elongation % Hardness HB
CA102 CA102 C61000   BS2875; BS2870 540-590 440-510 25-40  
C61400 CA106 C61400 CW303G ASTM B150; EN 12165; ASTM B169 520 230 35  
CA103 CA103 C62300   AMS4635; BS2874 520 215 22  
CA104 / BSB23 / DTD197A CA104 C63000; C63020 CW307G NF L14-706; AIR9070 UA 650-700 320-400 10-12  
DEF STAN 02-833 / NES 833 CA104   CW307G DGS1043 620-680 245-325 17  
COLSPEED 90   C64110     700-760 400-500 10-13 200-220
C63000 / AMS4640 CA104; CA105 C63000; C63020 CW307G NF L14-705 550-690 275-345 5-12  
DEF STAN 02-834 / NES834 CA107 C64200 CW301G DEF STAN 02-879; DGS1044 515-620 220-310 9-20  
PB102 PB102 C51000 CW451K NES838; DGS376 280-500 80-410 12-25  
PB103 PB103 C51900 CW452K BS2870 460-525 380-440 12 150-170 HV
PB104 / COLBRONZE PB104 C52100 CW453K DTD 265A; BS B24 450-550 min 300-400 min 15-20 min  
COLPHOS 90   C54400   ASTM B139; ASTM B103 345-450   8-18  

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