Manufacturer of Custom Machined Parts

Cast C52100

Phosphor bronze alloys such as C52100, also known as C521, consist of copper with 0.50–11.00% of 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 8% C
TEMPERS: H04 Hard
SOLIDS: 3/8” to 2 1/2” O.D.
HEX: 3/8" to 2" O.D.
RECTANGLES: Consult Mill
STANDARD LENGTHS: 144”

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

CDAASTMSAEAMSFederalMilitaryOther
C52100B139 B139M

Chemical Composition

Cu%Pb%Sn%Zn%Fe%P%
Rem.0.057.00-9.000.200.100.03-0.35

Chemical Composition according to ASTM B139/B139M-12(2017)

Note: Cu + Sum of Named Elements, 99.5% min. Single values represent maximums.

Machinability

Copper Alloy UNS No.Machinability RatingDensity (lb / in³ at 68 °F)
C52100200.318

Mechanical Properties

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

H04 Hard
Size Range: 1/4" to 1/2" Round and Hexagonal Inclusive

Tensile Strength, minYield Strength, at 0.5% Extension Under Load, minElongation, 4x Diameter or Specimen Thickness, min Rockwell "B" HardnessRemarks
ksiMPaksiMPa%typical HRB
805851293

Size Range: Over 1/2" to 1" Round and Hexagonal Inclusive

Tensile Strength, minYield Strength, at 0.5% Extension Under Load, minElongation, 4x Diameter or Specimen Thickness, min Rockwell "B" HardnessRemarks
ksiMPaksiMPa%typical HRB
755151593

Size Range: Over 1" Round and Hexagonal

Tensile Strength, minYield Strength, at 0.5% Extension Under Load, minElongation, 4x Diameter or Specimen Thickness, min Rockwell "B" HardnessRemarks
ksiMPaksiMPa%typical HRB
604152093

Physical Properties

 US CustomaryMetric
Melting Point - Liquidus1880 °F 1027 °C
Melting Point - Solidus1620 °F 882 °C
Density0.318 lb/in³ at 68 °F 8.8 gm/cm³ at 20 °C
Specific Gravity8.808.80
Electrical Conductivity13% IACS at 68 °F 0.076 MegaSiemens/cm at 20 °C
Thermal Conductivity36 Btu/sq ft/ft hr/°F at 68 °F 62.3 W/m at 20 °C
Coefficient of Thermal Expansion 68-57210.1 · 10-6 per °F (68-572 °F)17.4 · 10-6 per °C (20-300 °C)
Specific Heat Capacity0.09 Btu/lb/°F at 68 °F377.1 J/kg at 20 °C
Modulus of Elastic in Tension16000 ksi110310 MPa
Modulus of Rigidity6400 ksi41370 MPa

Fabrication Properties

TechniqueSuitability
SolderingExcellent
BrazingExcellent
Oxyacetylene WeldingFair
Gas Shielded Arc WeldingGood
Coated Metal Arc WeldingFair
Spot WeldGood
Seam WeldFair
Butt WeldExcellent
Capacity for Being Cold WorkedGood
Capacity for Being Hot FormedPoor
Machinability Rating20

Thermal Properties

TreatmentMinimum *Maximum *
Annealing9001250

* Temperature is measured in Fahrenheit

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