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C54400

Stocked alloy specs

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Reference guide

Stocked size schedules

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✔ Standard-stocked product

Continuous cast and drawn

Phosphor bronze C54400 contains copper, tin, and phosphorus. Phosphorus increases the wear resistance and stiffness of the alloy. Tin increases the corrosion resistance and strength of the alloy. Lead, zinc, and iron are other named elements. Phosphor bronze alloys are notable for their toughness, strength, good conductivity, and low coefficient of friction.


C544 also designated as as CuSn4Zn4Pb4 and CW456K.


In addition to C54400, Concast offers phosphor bronze alloys C51000, C52100, and C53400. Concast is the only domestic producer of phosphor bronze.

C54400 spec sheet C54400 size schedule 500 series brochure Weight calculator Standard products

C54400

Product description: Phosphor bronze B-2
Tempers: H04 hard
Solids: 3/8" to 2 3/4" O.D.
Hex: 3/8" to 2" O.D.
Standard lengths: 144"

Typical uses

Electrical: electrical connectors
Industrial: bearings, bushings, gears, pinions, screw machine products, shafts, sleeve bearings, thrust bearings, thrust washers, valve parts

Similar or equivalent specification

CDA ASTM SAE AMS Federal Military Other
C54400 B139
B139M		 J461
J463		        

Chemical composition

Cu% Pb% Sn% Zn% Fe% P%
Chemical composition according to ASTM B139/B139M-12(2017)

Note: Cu + sum of named elements, 99.5% min. Single values represent maximums.
 
Rem.		 3.00-
4.00		 3.50-
4.50		 1.50-
4.50		  
0.10		 0.01-
0.50

Machinability

Copper alloy UNS No. Machinability rating Density (lb/in3 at 68 °F)
C54400 80 0.320

Mechanical properties

Mechanical properties according to ASTM B139/B139M-12(2017)

C54400

H04 hard

Size range: over 1/16" to 1/4" round and hexagonal inclusive
Tensile strength, min Yield strength, at 0.5% extension under load, min Elongation, 4x diameter or specimen thickness, min Rockwell "B" hardness Remarks
ksi MPa ksi MPa % typical HRB  
65 450     8 86  
Size range: over 1/4" to 1/2" round and hexagonal inclusive
Tensile strength, min Yield strength, at 0.5% extension under load, min Elongation, 4x diameter or specimen thickness, min Rockwell "B" hardness Remarks
ksi MPa ksi MPa % typical HRB  
60 415     10 86  
Size range: over 1/2" to 1" round and hexagonal inclusive
Tensile strength, min Yield strength, at 0.5% extension under load, min Elongation, 4x diameter or specimen thickness, min Rockwell "B" hardness Remarks
ksi MPa ksi MPa % typical HRB  
55 380     12 86  
Size range: over 1" round and hexagonal
Tensile strength, min Yield strength, at 0.5% extension under load, min Elongation, 4x diameter or specimen thickness, min Rockwell "B" hardness Remarks
ksi MPa ksi MPa % typical HRB  
50 345     15 86  

Physical properties

Physical properties provided by CDA
  US Customary Metric
Melting point - liquidus 1830 °F 999 °C
Melting point - solidus 1700 °F 927 °C
Density 0.320 lb/in3 at 68 °F 8.89 gm/cm3 at 20 °C
Specific gravity 8.89 8.89
Electrical conductivity 19% IACS at 68 °F 0.111 MegaSiemens/cm at 20 °C
Thermal conductivity 50 Btu/sq ft/ft hr/°F at 68 °F 86.5 W/m at 20 °C
Coefficient of thermal expansion 68-572 9.6 ·10-6 per °F (68-572 °F) 16.6 ·10-6 per °C (20-300 °C)
Specific heat capacity 0.09 Btu/lb/°F at 68 °F 377.1 J/kg at 20 °C
Modulus of elasticity in tension 15000 ksi 103420 MPa
Modulus of rigidity 5600 ksi 38610 MPa

Fabrication properties

Fabrication properties provided by CDA
Technique Suitability
Soldering Excellent
Brazing Good
Oxyacetylene welding Not recommended
Gas shielded arc welding Not recommended
Coated metal arc welding Not recommended
Spot weld Not recommended
Seam weld Not recommended
Butt weld Fair
Capacity for being cold worked Good
Machinability rating 80

Thermal properties

Thermal properties provided by CDA
*Temperature is measured in Fahrenheit.
Treatment Minimum* Maximum*
Annealing 900 1250

Common fabrication processes

Blanking, drawing, etching, forming and bending, heading and upsetting, piercing and punching, roll threading and knurling, shearing, spinning, squeezing and swaging, stamping

Common fabrication processes provided by CDA

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