About Alloy
C52100 phosphor bronze is a versatile alloy celebrated for its robust mechanical properties, exceptional corrosion resistance, and favorable machinability. Composed primarily of copper (Cu) with significant additions of tin (Sn) and phosphorus (P), C52100 offers a well-balanced combination of strength, ductility, and wear resistance. This makes it highly suitable for a diverse array of industrial applications where reliability and performance under challenging conditions are paramount. From bearings and bushings to electrical connectors and marine hardware, C52100 phosphor bronze continues to be a preferred choice across various sectors for its ability to withstand heavy loads, resist corrosion in harsh environments, and maintain dimensional stability.
Product Form
BS 2874 (1986) superseded by BS EN 12167, BS EN 12164 and BS EN 12163
DTD 265A superseded by BS B24 (1991) Aircraft standard
UNS C52100
CW453K
COLBRONZE®
Chemical Composition
| Weight % | Sn | Ni | Fe | Pb | Cu | P | Zn |
| PB 104 | 7.5 / 9.0 | 0.3 max | 0.1 max | 0.05 max | remainder | 0.02 / 0.4 | 0.3 max |
Property
| Material | 0.2% Proof Stress (N/mm²) | Tensile Strength (N/mm²) | Elongation in 5.65√Cross Sectional Area(%) |
| PB 104 | 400 min | 550 min | 15 min |
| The table shows material as manufactured | |||
Application
Bearings and Bushings: Known for its high strength, wear resistance, and low friction properties.
Springs: Utilized for its resilience and high tensile strength in various types of springs.
Electrical Contacts: Employed in connectors, switches, and terminals due to its excellent electrical conductivity and corrosion resistance.
Marine Hardware: Resistant to corrosion in seawater, making it ideal for marine components like shafts and fittings.
Industrial Machinery: Used in gears, valves, and pumps for its strength and machinability.
Aerospace Components: Critical for bushings, bearings, and mechanical parts in aerospace applications.
Automotive Components: Found in bushings, bearings, and gears for durability and resistance to automotive fluids.
Decorative Applications: Also used in decorative fittings and architectural accents due to its aesthetic appeal and corrosion resistance.
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