{"id":4922,"date":"2025-07-12T03:24:29","date_gmt":"2025-07-12T10:24:29","guid":{"rendered":"https:\/\/guxiangjs.com\/?post_type=product&p=4922"},"modified":"2025-07-12T03:24:29","modified_gmt":"2025-07-12T10:24:29","slug":"phosphor-bronze-compression-spring","status":"publish","type":"product","link":"https:\/\/guxiangjs.com\/zh\/shop\/phosphor-bronze-compression-spring\/","title":{"rendered":"Phosphor-Bronze Compression Spring"},"content":{"rendered":"
    \n
  1. Performance
    \n\u2022 Excellent Electrical Conductivity \u2013 Rolled-and-drawn C51000 phosphor-bronze wire (97 % Cu, 2.1 % Sn, 0.2 % P) offers bulk resistivity \u2248 1.6 \u00b5\u03a9 cm, enabling simultaneous mechanical force and stable signal or grounding paths.
    \n\u2022 High Fatigue Strength \u2013 Cold-worked wire is oil-tempered and double stress-relieved at 260 \u00b0C, reaching 1 200 \u2013 1 500 MPa tensile strength with <2 % permanent set after 500 000 full-stroke cycles.
    \n\u2022 Corrosion Resistance \u2013 Tin-rich alloy forms a self-healing oxide that resists sulphur, mild acids, and seawater vapour; optional gold or silver flash (<2 \u00b5m) further improves contact reliability in low-voltage circuits.
    \n\u2022 Dimensional Versatility \u2013 Wire \u00d80.3 \u2013 1.5 mm, outer \u00d81.9 \u2013 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.<\/li>\n
  2. Application Scenarios & Assembly Requirements
    \n\u2022 Signal & Ground Contacts \u2013 Relay plungers, battery holders, slip-ring brushes, and PCB test probes where low contact resistance and moderate spring force are critical.
    \n\u2022 EMI Shielding Fingers \u2013 Provide continuous pressure along chassis seams in telecommunication racks and aerospace housings, maintaining <20 m\u03a9 joint resistance after vibration testing.
    \n\u2022 Precision Valves & Meters \u2013 Non-sparking, non-magnetic alloy suits oxygen service, gas flow regulators, and measuring instruments exposed to moisture or chemicals.
    \n\u2022 Assembly Guidelines
    \n\u2013 Seating Surfaces: use electroless-nickel or noble-metal pads to minimise galvanic mismatch and fretting.
    \n\u2013 Guide Clearance: bore ID = spring OD + 0.10 \u00d7 wire \u00d8 to avoid side-load buckling.
    \n\u2013 Compression Limit: cap stroke at 80 % of solid height to retain \u2265 95 % initial load over one million cycles.
    \n\u2013 End Style: squared-and-ground ends ensure concentric force in conductive paths; closed-unground ends acceptable for plastic seats.<\/li>\n
  3. User-Friendly Operation
    \n\u2022 Pre-Scragged & Calibrated \u2013 Springs are compressed to solid twice during production; published force values are valid right out of the box with no break-in period.
    \n\u2022 Clean Handling \u2013 Supplied ultrasonically cleaned and vacuum-bagged to prevent surface oils that raise contact resistance; compatible with IPA or mild alkaline washes before assembly.
    \n\u2022 Quick Identification \u2013 Laser-etched alphanumeric code on the last coil encodes wire size, free length, and plating type for rapid line-side sorting.
    \n\u2022 Tool-Free Installation \u2013 Small sizes seat with fingertip pressure; longer coils slide over standard guide pins\u2014no special compressors or lubricants required.<\/li>\n
  4. Quality & Longevity
    \n\u2022 Certified Production \u2013 ISO 9001 \/ IATF 16949 processes with in-line laser gauging keep force tolerance within \u00b16 % and free-length tolerance within \u00b10.5 mm.
    \n\u2022 Fatigue & Contact Life \u2013 Laboratory tests show <3 % load loss after 1 000 000 cycles at 60 % solid height; contact resistance remains under 25 m\u03a9 after 10 000 mating cycles and 48 h mixed-flowing-gas exposure.
    \n\u2022 Surface Finish Options \u2013 Chemical tin, bright nickel, silver, or 24 ct gold (all \u2264 5 \u00b5m) available to match application voltage and corrosion demands without altering spring rate.
    \n\u2022 Full Traceability \u2013 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.<\/li>\n<\/ol>","protected":false},"excerpt":{"rendered":"

    Performance \u2022 Excellent Electrical Conductivity \u2013 Rolled-and-drawn C51000 phosphor-bronze wire (97 % Cu, 2.1 % Sn, 0.2 % P) offers bulk resistivity \u2248 1.6 \u00b5\u03a9 cm, enabling simultaneous mechanical force and stable signal or grounding paths. \u2022 High Fatigue Strength \u2013 Cold-worked wire is oil-tempered and double stress-relieved at 260 \u00b0C, reaching 1 200 \u2013 […]<\/p>","protected":false},"featured_media":4923,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[],"product_cat":[535],"product_tag":[],"class_list":{"0":"post-4922","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-compression-spring","8":"first","9":"instock","10":"taxable","11":"shipping-taxable","12":"purchasable","13":"product-type-variable"},"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/guxiangjs.com\/zh\/wp-json\/wp\/v2\/product\/4922","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/guxiangjs.com\/zh\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/guxiangjs.com\/zh\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/guxiangjs.com\/zh\/wp-json\/wp\/v2\/comments?post=4922"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/guxiangjs.com\/zh\/wp-json\/wp\/v2\/media\/4923"}],"wp:attachment":[{"href":"https:\/\/guxiangjs.com\/zh\/wp-json\/wp\/v2\/media?parent=4922"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/guxiangjs.com\/zh\/wp-json\/wp\/v2\/product_brand?post=4922"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/guxiangjs.com\/zh\/wp-json\/wp\/v2\/product_cat?post=4922"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/guxiangjs.com\/zh\/wp-json\/wp\/v2\/product_tag?post=4922"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}