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Strength in numbers

Copper and Copper Alloys   |   Aluminium Bronze

DEF STAN 02-838 ~ NES838 Bar

CommercialNES838 DEF STAN 838

A Phosphor Bronze Alloy with high strength and very high corrosion resistance especially in sewater and marine enviroments. Mainly used in Naval Engineering, Nuclear, Aerospace and Defence Applications.


Chemical Composition

DEFSTAN 02-838(PT1)/1(2012)
Phosphor Bronze
Chemical Element % Present
Copper (Cu) balance
Lead (Pb) 0.02 max
Iron (Fe) 0.1 max
Nickel (Ni) 0.3 max
Silicon (Si) 0.3 max
Zinc (Zn) 0.3 max
Phosphorous (P) 0.02 - 0.4
Tin (Sn) 4 - 5.5

Alloy Designations

DEF STAN 02-838

NES838

NES 838

DEF STAN 838


Temper Types

ANNEALED


Supplied Forms

Annealed Bar - Grade 1

  • Bar
  • Rod

Mechanical Properties

DEFSTAN 02-838(PT1)/1(2012)
Bar - 6mm to 18mm
Mechanical Property Value
Proof Stress 410 Min MPa
Tensile Strength 500 Min MPa
Elongation A 12 Min %
DEFSTAN 02-838(PT1)/1(2012)
Bar - 18mm to 40mm
Mechanical Property Value
Proof Stress 380 Min MPa
Tensile Strength 460 Min MPa
Elongation A 12 Min %
DEFSTAN 02-838(PT1)/1(2012)
Bar - 40mm to 60mm
Mechanical Property Value
Proof Stress 320 Min MPa
Tensile Strength 380 Min MPa
Elongation A 16 Min %
DEFSTAN 02-838(PT1)/1(2012)
Bar - Over 60mm
Mechanical Property Value
Proof Stress 250 Min MPa
Tensile Strength 350 Min MPa
Elongation A 18 Min %

Mechanical Prperties shown are for annealed bar.