: For specific grade properties like SWCH 8R, you can find technical summaries at Gravity Group of Companies .
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JIS G3539 is a standard published by the Japanese Standards Association (JSA) that covers steel wires, including wires for general use, wires for springs, and wires for other specific applications. The standard provides specifications for the chemical composition, mechanical properties, and testing methods of steel wires.
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Engine bolts, chassis fasteners, special pins, and studs.
Surface defects are amplified during cold forging. A minor scratch can expand into a catastrophic split during heading. Therefore, JIS G3539 enforces stringent quality benchmarks. Surface Decarburization
You can find detailed technical datasheets and full standard documentation on platforms like: : Offers community-uploaded versions of JIS G 3539-1991 and specific grade datasheets like Manufacturer Portals : Industrial suppliers like Gravity Group ICAST Alloys : For specific grade properties like SWCH 8R,
Typical components manufactured from JIS G3539 wires include:
⚠️ Important Note for Users: If you receive a drawing or a certification request referencing JIS G3539, the intended modern specification is likely (or its subsequent revisions). Relying on the withdrawn standard for new production may lead to compliance issues, particularly regarding updated element limits and testing methods.
: Engine mount fasteners, suspension pins, and steering assembly hardware. If you share with third parties, their policies apply
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Annealed at an intermediate or final stage to restore maximum ductility. DA: Drawn and subsequently annealed. Microstructural Integrity
JIS G3539 covers carbon steel wires used primarily for manufacturing bolts, nuts, screws, rivets, and other complex parts through cold heading and cold forging processes. Cold heading requires the material to undergo severe plastic deformation without cracking. Therefore, the steel wire must possess high ductility, uniform microstructure, and excellent surface quality. Common industries utilizing this standard include: