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C54400 Phosphor Bronze "B-2" "Free Cutting"
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C54400 Phosphor Bronze "B-2" "Free Cutting"

ASTM B139, ASTM B140, QQ-B-750, SAE J461

EN CuSn4Pb4Zn4 - BZ4 - CW456K

Available in continuous Wire-In-Coil or Small Coils

C54400 Phosphor Bronze is the finest bearing alloy that the industry has to offer. It is an extremely machinable alloy that is equalled by few in the wrought metal industry as a bearing alloy. When annealed, this metal can be bent, formed, blanked, and stamped.

Typical Uses for C54400 Phosphor Bronze "B-2" "Free Cutting":

ELECTRICAL: Electrical Connectors

INDUSTRIAL: Bushings, Gears, Pinions, Shafts, Valve Parts, Sleeve Bearings, Thrust Bearings, Screw Machine Products, Bearings, Thrust Washers

Sizes Available From NBM

SOLID BAR: 3/16" - 6" diameter

HEX BAR: 3/8" - 2" across the flats

SHEET AND PLATE: available upon request

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Chemical Composition
Mechanical Properties
Physical Properties
Fabrication
Specifications
Cu Fe Pb P Sn Zn
Min/Max Rem 0.1 3.5 - 4.5 0.01 - 0.5 3.5 - 4.5 1.5 - 4.5
Nominals 88.0000 - 4.0000 0.2500 4.0000 4.0000
Product Type Spec
Bar ASTM B103, B139, SAE J 463, J461
Bearings and Bushings MILITARY MIL-B-13501
Plate ASTM B103
Rod ASTM B139, SAE J 463, J461
Shapes ASTM B139
Sheet ASTM B103, SAE J 463, J461
Strip AMS 4520, ASTM B103, SAE J 463, J461
Temper Sect. Size Cold Work Type Min Temp Tensile Strength YS
0.05% UL 		YS
0.02% Offset 		YS
0.005% Offset 		Elong. RH
B 		RH
C 		RH
F 		RH
30T 		VH
500 		BH
500 		BH
3000 		Shear
Strgth 		Fatigue
Strgth 		Izod
Impact
Strgth
- in. % - F ksi ksi ksi ksi % B C F 30T 500 500 3000 ksi ksi ft-lb
- mm. - - C MPa MPa MPa MPa - - - - - - - - MPa MPa J
Flat Product
H02 0.04 68 58 40 - - - - - - - - - - - -
H02 1 0 TYP 20 400 276 - - 24 68 - - - - - - - - 0
OS035 0.04 68 44 19 - - - - - - - - - - - -
OS035 1 0 TYP 20 303 131 - - 50 - - 65 - - - - - - 0
ROD
H04 0.5 68 75 63 - - - - - - - - - - - -
H04 12.7 35 TYP 20 517 434 - - 15 83 - - - - - - - - 0
H04 1 68 68 57 - - - - - - - - - - - -
H04 25.4 25 TYP 20 469 393 - - 20 80 - - - - - - - - 0
Product Property US Customary Metric
Coefficient of Thermal Expansion 9.6 . 10-6 per oF (68-572 F) 17.3 . 10 6? per å¡C (20-300 C)
Density 0.32 lb/in3 @ 68 F 8.89 gm/cm3 @ 20 C
Electrical Conductivity 19 %IACS @ 68 F 0.111 MegaSiemens/cm @ 20 C
Electrical Resistivity 54.6 ohms-cmil/ft @ 68 F 9.08 microhm-cm @ 20 C
Melting Point Liquid US 1830 F 999 C
Melting Point Solid US 1700 F 927 C
Modulas of Elasticity in Tension 15000 ksi 103400 MPa
Modulas of Rigidity 5600 ksi 38610 MPa
Specific Gravity 8.89 8.89
Specific Heat Capacity 0.09 Btu/lb/å¡F @ 68 F 377.1 J/kg . å¡K at 293 K
Thermal Conductivity 50.0 Btu . ft/(hr . ft2 . å¡F) @ 68 F 86.5 W/m . å¡K at 20 C
Joining Technique Suitability
Brazing Good
Butt Weld Fair
Capacity for Being Cold Worked Good
Coated Metal Arc Welding Not Recommended
Gas Sheilded Arc Welding Not Recommended
Machinability rating 80
Oxyacetylene Welding Not Recommended
Seam Weld Not Recommended
Soldering Excellent
Spot Weld Not Recommended
End Product Specification
Bar ASTM B103, B139, SAE J 463, J461
Bearings and Bushings MILITARY MIL-B-13501
Plate ASTM B103
Rod ASTM B139, SAE J 463, J461
Shapes ASTM B139
Sheet ASTM B103, SAE J 463, J461
Strip AMS 4520, ASTM B103, SAE J 463, J461

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