Manufacturer of custom machined parts, specializing in bronze and other alloys for your engineered applications
419.223.1075
1046 Greenlawn Ave, Lima OH 45804
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COPPER-BASED ALLOYS
C54400
CAST C54400
Phosphor bronze alloys such as C54400, also known as C544, consist of copper with 0.50–11.00% tin and 0.01–0.35% phosphorus. The tin increases the corrosion resistance and strength of the alloy. The phosphorus increases the wear resistance and stiffness of the alloy. These alloys are notable for their toughness, strength, low coefficient of friction, and fine grain.
INFORMATION
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.
RECTANGLES: Consult Mill
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%
Rem.
3.00-4.00
3.50-4.50
1.50-4.60
0.10
0.01-0.50
MACHINABILITY
Copper Alloy UNS No.
Machinability Rating
Density(lb / in 3 at 68 °F)
C54400
80
0.320
MECHANICAL PROPERTIES
Mechanical Properties according to ASTM B139/B139M-12(2017)

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: 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
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 Elastic in Tension
15000 ksi
103420 MPa
Modulus of Rigidity
5600 ksi
38610 MPa
FABRICATION PROPERTIES
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
Treatment
Minimum*
Maximum*
Annealing
900
1250


SPEC SHEET


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