C52100 Phosphor Bronze
Other Known Specs: ASTM B139, QQ-B750, ASTM J461, CuSn8,5P, CuSn8P, CuSn8, UE9P, PB104, BS2874, NFL14703
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
C52100 Continuous cast and drawn
Phosphor bronze C52100 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.
C521 also designated as as CuSn8P, UE9P, CW451K, PB104, BS2B24, and DTD265A.
In addition to C52100, Lion Metal offers phosphor bronze alloys C51000, C53400, and C54400. Lion Metal is the only domestic producer of phosphor bronze.
Typical uses
Architecture: bridge bearing plates
Builders hardware: thermostat bellows
Consumer: coinage, cymbals, power conductor for electro-surgical pencil
Electrical: cold headed parts, electrical connectors, electrical flexing contact blades, electronic connectors, fuse clips, switch parts, wire brushes
Fasteners: cotter pins, fasteners, heavy-duty, lock washers
Industrial: beater bar, bellows, bourdon tubing, chemical hardware, heavy duty clips, clutch disks, cold headed parts, diaphragms, doctor blades for the paper industry, gears, perforated sheets, pinions, pneumatic hammers, sleeve bushings, heavy duty springs, helical extension springs, helical torsion springs, textile machinery, thrust bearings, truss wire, welding wire, well drill equipment
Marine: marine parts
Similar or equivalent specification
| CDA | ASTM | SAE | AMS | Federal | Military | Other |
|---|---|---|---|---|---|---|
| C52100 | B139 B139M |
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. | 0.05 | 7.00- 9.00 | 0.20 | 0.10 | 0.03- 0.35 | ||||||
Machinability
| Copper alloy UNS No. | Machinability rating | Density (lb/in3 at 68 °F) |
|---|---|---|
| C52100 | 20 | 0.318 |
Mechanical properties
C52100
H04 hard
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 | |
| 85 | 585 | 12 | 93 | |||
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 | |
| 75 | 515 | 15 | 93 | |||
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 | |
| 60 | 415 | 20 | 93 | |||
Physical properties
Physical properties provided by CDA | |||||||||||
| US Customary | Metric | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Melting point – liquidus | 1880 °F | 1027 °C | |||||||||
| Melting point – solidus | 1620 °F | 882 °C | |||||||||
| Density | 0.318 lb/in3 at 68 °F | 8.8 gm/cm3 at 20 °C | |||||||||
| Specific gravity | 8.80 | 8.80 | |||||||||
| Electrical conductivity | 13% IACS at 68 °F | 0.076 MegaSiemens/cm at 20 °C | |||||||||
| Thermal conductivity | 36 Btu/sq ft/ft hr/°F at 68 °F | 62.3 W/m at 20 °C | |||||||||
| Coefficient of thermal expansion 68-572 | 10.1 ·10-6 per °F (68-572 °F) | 17.4 ·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 | 16000 ksi | 110310 MPa | |||||||||
| Modulus of rigidity | 6400 ksi | 41370 MPa | |||||||||
Fabrication properties
Fabrication properties provided by CDA | |||||||||||
| Technique | Suitability | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Soldering | Excellent | ||||||||||
| Brazing | Excellent | ||||||||||
| Oxyacetylene welding | Fair | ||||||||||
| Gas shielded arc welding | Good | ||||||||||
| Coated metal arc welding | Fair | ||||||||||
| Spot weld | Good | ||||||||||
| Seam weld | Fair | ||||||||||
| Butt weld | Excellent | ||||||||||
| Capacity for being cold worked | Good | ||||||||||
| Capacity for being hot formed | Poor | ||||||||||
| Machinability rating | 20 | ||||||||||
Thermal properties
Thermal properties provided by CDA *Temperature is measured in Fahrenheit. | |||||||||||
| Treatment | Minimum* | Maximum* | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Annealing | 900 | 1250 | |||||||||
Common fabrication processes
Bending, blanking, forming, knurling, machining, roll threading, shearing, stamping, upsetting
Common fabrication processes provided by CDA
