{"id":4469,"date":"2025-07-05T03:57:13","date_gmt":"2025-07-05T10:57:13","guid":{"rendered":"https:\/\/guxiangjs.com\/?post_type=product&p=4469"},"modified":"2025-07-09T00:00:52","modified_gmt":"2025-07-09T07:00:52","slug":"steel-extension-spring-extended-tension-spring-wire-diameter-2-0-5-0","status":"publish","type":"product","link":"https:\/\/guxiangjs.com\/zh\/shop\/steel-extension-spring-extended-tension-spring-wire-diameter-2-0-5-0\/","title":{"rendered":"Steel Extension Spring Extended Tension Spring Wire Diameter 2.0-5.0"},"content":{"rendered":"
    \n
  1. Performance
    \n\u2022 High-Carbon Spring Steel Core \u2013 Coiled from ASTM A228 music-wire or EN 10270-1 grade SH with tensile strengths of 1 400\u20131 900 MPa (wire \u00d82.0\u20135.0 mm). Oil-tempered and stress-relieved at 250 \u00b0C for outstanding elasticity and minimal permanent set after repeated elongation.
    \n\u2022 Precise Force Characteristics \u2013 Outer diameters \u00d820\u201330 mm and active\u2010coil counts tailored to deliver spring rates from 10 N mm\u207b\u00b9 to 80 N mm\u207b\u00b9, with built-in initial tension up to 15 % of maximum working load to ensure tight closure in the neutral position.
    \n\u2022 Shot-Peened Surface \u2013 Introduces compressive residual stresses that boost fatigue life by 40 % and increase resistance to micro-crack propagation under cyclic loading.
    \n\u2022 Broad Operating Window \u2013 Maintains linear force output from \u221240 \u00b0C to +120 \u00b0C; modulus variation <3 % across this range guarantees predictable behavior in outdoor, automotive, and industrial environments.<\/li>\n
  2. Application Scenarios & Assembly Requirements
    \n\u2022 Industrial Mechanisms \u2013 Counterbalances for access hatches, conveyor take-ups, and vibratory feeders rely on the \u00d83\u20135 mm series for high stored energy and compact packaging.
    \n\u2022 Automotive & Transport \u2013 Door checks, seat recliner linkages, and trailer ramp assists use medium-diameter springs to offset panel weight and provide controlled rebound.
    \n\u2022 Agricultural & Construction Equipment \u2013 Tensioners for chain drives and belt systems benefit from corrosion-protected variants when exposed to dust, slurry, or de-icing agents.
    \n\u2022 Assembly Guidelines:
    \n\u2013 End Style Selection: choose machine loops or extended hooks for general duty; swivel or threaded inserts for precise preload adjustment.
    \n\u2013 Maximum Extension: limit travel to 85 % of elastic range (\u2248 L\u2080 + 0.8 \u00d7 \u0394L_solid) to prevent loss of initial tension.
    \n\u2013 Safety Cables: when installed overhead, route a secondary cable through the coil to retain fragments if failure occurs.
    \n\u2013 Loop Alignment: maintain \u2264 5\u00b0 angular misalignment between spring axis and attachment pins to avoid side loading.<\/li>\n
  3. User-Friendly Operation
    \n\u2022 Pre-Set & Color-Coded \u2013 Factory scragging removes early relaxation; epoxy color bands on hooks identify spring rate and free length, simplifying on-site matching.
    \n\u2022 Ready-to-Install Finish \u2013 Lightly oiled black-oxide or zinc-phosphate coating protects against rust during storage and handling without flaking or contaminating adjacent parts.
    \n\u2022 Tool-Lite Replacement \u2013 Installation requires only basic hand tools (combination wrench or locking pliers); hooks engage standard eye bolts or clevis pins in seconds.
    \n\u2022 Low-Maintenance Service \u2013 No lubrication needed after assembly; periodic visual inspection for coil stretch or surface corrosion suffices for multi-year deployments.<\/li>\n
  4. Quality & Longevity
    \n\u2022 ISO 9001 \/ IATF 16949 Production \u2013 Statistical process control on wire drawing, coiling pitch, and heat treatment keeps load tolerance within \u00b17 % and free-length tolerance within \u00b11 mm.
    \n\u2022 Endurance Validation \u2013 Sample springs cycled 500 000 times at 60 % of maximum rated extension show <4 % load decay and no hook deformation, meeting stringent fatigue criteria for safety-critical applications.
    \n\u2022 Protective Coatings & Compliance \u2013 Optional epoxy-powder topcoat extends salt-spray resistance to >144 h; all variants are RoHS & REACH compliant, free from hexavalent chromium and heavy-metal additives.
    \n\u2022 Full Traceability \u2013 Each spring carries a laser-etched batch code linking to 3.1 material certificates and load\/deflection curves, ensuring reliable documentation for OEM and maintenance records.<\/li>\n<\/ol>","protected":false},"excerpt":{"rendered":"

    Performance \u2022 High-Carbon Spring Steel Core \u2013 Coiled from ASTM A228 music-wire or EN 10270-1 grade SH with tensile strengths of 1 400\u20131 900 MPa (wire \u00d82.0\u20135.0 mm). Oil-tempered and stress-relieved at 250 \u00b0C for outstanding elasticity and minimal permanent set after repeated elongation. \u2022 Precise Force Characteristics \u2013 Outer diameters \u00d820\u201330 mm and active\u2010coil […]<\/p>","protected":false},"featured_media":4470,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[],"product_cat":[534],"product_tag":[],"class_list":{"0":"post-4469","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-extension-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\/4469","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=4469"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/guxiangjs.com\/zh\/wp-json\/wp\/v2\/media\/4470"}],"wp:attachment":[{"href":"https:\/\/guxiangjs.com\/zh\/wp-json\/wp\/v2\/media?parent=4469"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/guxiangjs.com\/zh\/wp-json\/wp\/v2\/product_brand?post=4469"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/guxiangjs.com\/zh\/wp-json\/wp\/v2\/product_cat?post=4469"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/guxiangjs.com\/zh\/wp-json\/wp\/v2\/product_tag?post=4469"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}