Phosphorus Bronze

Phosphor bronze, or tin bronze, is a bronze alloy that contains a mixture of copper, tin and phosphorous.

Qualities of Phosphor Bronze Alloys

Phosphor bronze alloys are primarily used for electrical products because they have superb spring qualities, high fatigue resistance, excellent formability, and high corrosion resistance. The addition of tin increases the corrosion resistance and strength of the alloy. The phosphor increases the wear resistance and stiffness of the alloy.

Phosphor bronze C544 is one of the finest bearing alloys the industry has to offer. Phosphor bronze is available in sheet, strip, plate, wire, rod and bar.

Other Applications

Other uses include corrosion resistant bellows, diaphragms, spring washers, bushings, bearings, shafts, gears, thrust washers, and valve parts.

 

C51000 Phosphor Bronze "5% A"

EN equivalent is CuSn5

ASTM B139, QQ-B750, SAE J461

C51000 Phosphor Bronze alloy possess a higher yield strength than is readily available in most cast products. Typical applications for phosphor bronze include bearings, bushings, gears, pinions, shafts, thrust washers and valve parts. C51000 Phosphor bronze can be readily brazed or soldered. Capacity for being cold worked is good.

Typical Uses for C51000 Phosphor Bronze "5% A":

ARCHITECTURE: Bridge Bearing Plates

ELECTRICAL: Switch Parts, Electromechanical Spring Components, Resistance Wire, Electrical Flexing Contact Blades, Electrical Connectors, Electronic Connectors, Wire Brushes, Electronic and Precision Instrument Parts, Fuse Clips

FASTENERS: Lock Washers, Fasteners, Cotter Pins

INDUSTRIAL: Bellows, Textile Machinery, Perforated Sheets, Chemical Hardware, Truss Wire, Springs, Sleeve Bushings, Diaphragms, Clutch Disks, Bourdon Tubes, Beater Bar, Welding Rods, Pressure Responsive Elements

C52100 Phosphor Bronze "8% C"

ASTM B139, QQ-B750, ASTM J461

Typical Uses for C52100 Phosphor Bronze "8% C":

ARCHITECTURE: Bridge Bearing Plates

CONSUMER: Coinage, Cymbals, Power Conductor for Electro-Surgical Pencil

ELECTRICAL: Electrical Connectors, Electronic Connectors, Cold Headed Parts, Electrical Flexing Contact Blades, Electrical Flexing Contact Blades, Wire Brushes, Switch Parts, Fuse Clips

FASTENERS: Fasteners, Heavy Duty, Lock Washers, Cotter Pins

INDUSTRIAL: Springs, Helical Extension, Diaphragms, Doctor Blades, Paper Industry, Bourdon Tubing, Thrust Bearings, Clutch Disks, Welding Wire, Well Drill Equipment, Beater Bar, Springs, Helical Torsion, Clips, Heavy Duty, Gears, Pinions, Bellows, Truss Wire, Sleeve Bushings, Pneumatic Hammers, Cold Headed Parts, Textile Machinery, Perforated Sheets, Chemical Hardware, Springs, Heavy Duty

MARINE: Marine Parts

C52400 Phosphor Bronze "10% D"

ASTM B139, QQ-B750, SAE J461

Typical Uses for C52400 Phosphor Bronze "10% D":

INDUSTRIAL: Heavy Bars and Plates, Fittings, Expansion Plates for Bridges

C53400 Phosphor Bronze "B-1"

ASTM B139, QQ-B750

Typical Uses for C53400 Phosphor Bronze "B-1":

INDUSTRIAL: Bushings, Bearings, Fasteners

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

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

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