Product | PRODUCT

0.05-10mm C5210 Phosphor Bronze Strip/Sheet | High Elasticity & Wear Resistance

Publish Time: 2026-03-14 13:44:38

Simply put, C5210 is a golden ratio alloy of copper, tin, and phosphorus. It retains copper’s excellent conductivity, while tin and phosphorus boost hardness, elasticity, and wear resistance. With ultra-low impurity levels, it performs reliably in both precision electronics and outdoor machinery applications.

Element	Content Range	Core Function (Plain Language Explanation)
Copper (Cu)	Balance (≥90%)	Base material that ensures electrical conductivity and ductility, preventing material brittleness and cracking
Tin (Sn)	7.0-9.0%	Enhances strength and wear resistance — like adding a "wear-resistant buff" to extend the service life of mechanical parts
Phosphorus (P)	0.03-0.35%	Optimizes elasticity and fatigue resistance; the material rebounds to its original shape after repeated bending, making it the top choice for springs and shrapnel
Zinc (Zn)	≤0.2%	Assists in improving corrosion resistance, preventing rust in humid environments
Lead (Pb)	≤0.05% (≤0.008% for eco-grade)	Strictly controlled impurity that meets environmental standards, safe for use in electronics and food-contact scenarios
Iron (Fe)	≤0.10%	Reduces the impact of impurities to ensure stable material performance and avoid uneven local hardness

0.05-10mm C5210 Phosphor Bronze Strip/Sheet | High Elasticity & Wear Resistance(图1)

0.05-10mm C5210 Phosphor Bronze Strip/Sheet | High Elasticity & Wear Resistance(图2)

Application Scenarios

Electronics & Electrical Industry

C5210 phosphor bronze strip/sheet is indispensable for connectors in mobile phones and computers, relay reeds, and shielding cases for 5G equipment. It delivers a stable conductivity of 15-20% IACS, with consistent contact resistance for smooth signal transmission. Its exceptional elasticity shines here — 0.05mm thin strips made into connectors maintain tight fit even after tens of thousands of insertions and extractions. Electronics manufacturers using C5210 have reduced product failure rates by over 40%.

Machinery Manufacturing Industry

Components subject to high friction and high-frequency movement (e.g., bearing bushings, gears, springs) demand superior wear resistance and fatigue resistance. In its hard temper, C5210 achieves a tensile strength of 540-640MPa and a hardness of 150-210HV, resisting wear and deformation even during long-term high-speed operation. It is widely used in valve elements and mechanical diaphragms.

Automotive Industry

Battery connectors, sensor contacts for new energy vehicles, and brake system components for traditional cars require materials that can withstand extreme temperatures, vibrations, and corrosion. C5210 has a corrosion rate of ≤0.01mm/year in seawater, freshwater, and humid environments, and maintains stable performance even in the high-temperature conditions of engine compartments. Its non-magnetic property prevents interference with electronic control systems, ensuring safer driving.

Other Fields

Instrumentation: Wear-resistant parts made from C5210 ensure long-term measurement accuracy.
Medical Devices: Its low-lead, eco-friendly composition and suitability for precision machining make it ideal for manufacturing micro-components.
Musical Instruments: Reeds crafted from C5210 deliver excellent elasticity and resonance, producing a stable and rich tone.

Why Choose 0.05-10mm C5210 Phosphor Bronze Strip/Sheet?

Full Thickness Coverage: Ranges from 0.05mm ultra-thin strips (for electronic components) to 10mm thick sheets (for mechanical structural parts), eliminating the need to switch materials for different products.
Excellent Machinability: Compatible with cold rolling, stamping, bending, and welding processes. Plasticity can be restored after annealing, enabling precise forming of complex shapes.
Compliance with International Standards: Meets GB/T5231, JIS H3130, and ASTM B103 standards, ensuring quality assurance for export products.
Cost-Effectiveness: Though slightly higher in unit price than regular copper, its superior performance reduces long-term maintenance and replacement costs, making it more economical over time.

Prev: Wear-Resistant C5191 Phosphor Bronze Sheet/Strip | 0.05mm Ultra-Thin to 10mm Thick
Next: C7521/C7701 Cupronickel Strip | Low Resistance & Easy Machining | Special Material for Mobile Ph