Phosphor Bronze C54400 Fasteners

AISI 4130 Bolts

Phosphor bronze C54400 fasteners are manufactured and stock in variety of sizes and forms including regular hex bolts, hex nuts, screws, stud bolts, threaded rods, countersunk screws, hex nuts, plain washer, split lock washers, dowel pins, etc. Alloy C54400 fasteners are used in field of aerospace, building marine equipment, chemical processing equipment, etc. BoltPort produces phosphor bronze fasteners in metric and imperial system.

About Alloy 544 Phosphor Bronze

Phosphor Bronze Alloy 544 is a free cutting bronze having good cold working properties. The phosphor content improved wear resistance and stiffness of the alloy while tin provides resistance to corrosion and strength to the alloy. Also designated by UNS C54400 and EN Number CW456K.

Alloy C54400 Chemical Composition

  • Copper Cu 88.0
  • Lead Pb 3.5-4.5
  • Tin Sn 3.5-4.5
  • Zinc Zn 1.5-4.5
  • Phosphorous P 0.01-0.05
  • Iron Fe ≤ 0.10

Alloy C54400 Mechanical properties

  • Tensile Strength (MPa): 303-517
  • 0.2% Yield (MPa) : 131-434
  • Elongation % : 50.00
  • Machinability : 80
  • Shear Modulus : 39.0 GPa
  • Poisson's ratio : 0.34
  • Elastic modulus : 117 GPa

Alloy C54400 Fasteners

  • C54400 Bolts
  • C54400 Screws
  • C54400 Stud Bolts
  • C54400 Nuts
  • C54400 Washers
  • C54400 Pins
  • C54400 Threaded Rods

C54400 Specifications

Specifications Material Form Products
ASTM B103 Grade C54400    
ASTM B139 Grade C54400    
SAE J461 Grade C54400    
SAE J463 Grade C54400    


  • Marine fastening
  • Aerospace fastening
  • Chemical process equipment fastening
  • Fastening for industrial cooling system

Regular products

DIN 931 Hex Bolts, DIN 933 Hex Screws, DIN 934 Hex Nuts, ASME B18.2.1 Heavy Hex Bolts, ASME B18.2.2 Heavy Hex Nuts, DIN 125 Plain Flat Washers, DIN 127 Split Lock Washers, DIN 976 Stud Bolts, ASME B16.5 Stud Bolts, etc.