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Phosphor-Bronze Compression Spring

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Phosphor-Bronze Compression Spring
Phosphor-Bronze Compression Spring - Image 2

Quantity

Unit Price

Price

Price range: $0.11 – $0.92

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Price range: $0.11 – $0.92

Total:

Price range: $0.11 – $0.92

Phosphor-Bronze Compression Spring Description

  1. Performance
    • Excellent Electrical Conductivity – Rolled-and-drawn C51000 phosphor-bronze wire (97 % Cu, 2.1 % Sn, 0.2 % P) offers bulk resistivity ≈ 1.6 µΩ cm, enabling simultaneous mechanical force and stable signal or grounding paths.
    • High Fatigue Strength – Cold-worked wire is oil-tempered and double stress-relieved at 260 °C, reaching 1 200 – 1 500 MPa tensile strength with <2 % permanent set after 500 000 full-stroke cycles.
    • Corrosion Resistance – Tin-rich alloy forms a self-healing oxide that resists sulphur, mild acids, and seawater vapour; optional gold or silver flash (<2 µm) further improves contact reliability in low-voltage circuits.
    • Dimensional Versatility – Wire Ø0.3 – 1.5 mm, outer Ø1.9 – 14 mm, and free lengths up to 150 mm cover micro-switch contacts through to medium load supports; conical or barrel profiles can shorten solid height or deliver progressive force curves.
  2. Application Scenarios & Assembly Requirements
    • Signal & Ground Contacts – Relay plungers, battery holders, slip-ring brushes, and PCB test probes where low contact resistance and moderate spring force are critical.
    • EMI Shielding Fingers – Provide continuous pressure along chassis seams in telecommunication racks and aerospace housings, maintaining <20 mΩ joint resistance after vibration testing.
    • Precision Valves & Meters – Non-sparking, non-magnetic alloy suits oxygen service, gas flow regulators, and measuring instruments exposed to moisture or chemicals.
    • Assembly Guidelines
    – Seating Surfaces: use electroless-nickel or noble-metal pads to minimise galvanic mismatch and fretting.
    – Guide Clearance: bore ID = spring OD + 0.10 × wire Ø to avoid side-load buckling.
    – Compression Limit: cap stroke at 80 % of solid height to retain ≥ 95 % initial load over one million cycles.
    – End Style: squared-and-ground ends ensure concentric force in conductive paths; closed-unground ends acceptable for plastic seats.
  3. User-Friendly Operation
    • Pre-Scragged & Calibrated – Springs are compressed to solid twice during production; published force values are valid right out of the box with no break-in period.
    • Clean Handling – Supplied ultrasonically cleaned and vacuum-bagged to prevent surface oils that raise contact resistance; compatible with IPA or mild alkaline washes before assembly.
    • Quick Identification – Laser-etched alphanumeric code on the last coil encodes wire size, free length, and plating type for rapid line-side sorting.
    • Tool-Free Installation – Small sizes seat with fingertip pressure; longer coils slide over standard guide pins—no special compressors or lubricants required.
  4. Quality & Longevity
    • Certified Production – ISO 9001 / IATF 16949 processes with in-line laser gauging keep force tolerance within ±6 % and free-length tolerance within ±0.5 mm.
    • Fatigue & Contact Life – Laboratory tests show <3 % load loss after 1 000 000 cycles at 60 % solid height; contact resistance remains under 25 mΩ after 10 000 mating cycles and 48 h mixed-flowing-gas exposure.
    • Surface Finish Options – Chemical tin, bright nickel, silver, or 24 ct gold (all ≤ 5 µm) available to match application voltage and corrosion demands without altering spring rate.
    • Full Traceability – Each batch is linked to 3.1 material certificates, furnace charts, and individual load/deflection curves, ensuring predictable, auditable performance for medical, aerospace, and telecom applications.

Additional information

Wire Diameter（mm)

0.3, 0.5, 0.6, 0.8, 1.0, 1.5
Spring Outer Diameter(mm)

1.9, 10, 14, 2.1, 2.7, 3, 4.5, 5, 5.6, 6, 8, 9
Spring Length(mm)

10, 11, 12, 15, 19, 20, 25, 30, 35, 38, 40
Material

Phosphor-Bronze
Manufacturer

GUXIANG
Package Size(cm)

30*20*20
SKU

1，000,000 pieces
Shipping Term

EXW Guangdong Province

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