No. It was officially withdrawn and replaced by (later revisions confirmed) as of January 20, 2005.
: Engine mount fasteners, suspension pins, and steering assembly hardware.
: Varies by grade; for instance, SWCH 10A requires a minimum of , while SWCH 15A requires Reduction of Area : Generally specified at a minimum of to ensure sufficient ductility for forming. Surface Quality
Cold heading and cold forging are severe plastic deformation processes. Metal is formed at room temperature using high-pressure dies. JIS G3539 specifies carbon steel wires explicitly tailored to withstand these extreme forces without cracking or internal tearing. Core Applications jis g3539 pdf
Low carbon steel grades for simple cold-heading parts.
Specifies the minimum strength required to withstand forming forces.
JIS G3539 typically categorizes wire based on its chemical composition and the type of finish. Common designations include: : Varies by grade; for instance, SWCH 10A
It ensures that the raw material (wire rod) possesses the necessary ductility, strength, and uniformity for cold-forming operations. 2. Key Material Grades (SWCH)
High reduction of area percentages indicate superior microstructural ductility, allowing the steel to flow smoothly into complex die shapes.
The grades scale by carbon content, striking a balance between initial ductility and final post-heat treatment hardness. Chemical Composition Breakdown JIS G3539 specifies carbon steel wires explicitly tailored
: Provides high strength, toughness, and excellent wear resistance for components that must resist delayed fracture. 2. Common Grades & Specifications
The JIS G3539 PDF can be obtained from the Japanese Standards Association (JSA) or other authorized distributors. The standard is available in both Japanese and English languages.
JIS G 3539:1991 was a Japanese Industrial Standard (JIS) titled (also known as 冷間圧造用炭素鋼線 ).
While JIS G3539 specified mechanical properties based on the wire diameter and manufacturing process, the following typical ranges indicate the level of performance expected of these materials:
Note: Always ensure you purchase or download the latest revision of the standard, as technical updates regarding environmental regulations or material testing criteria are periodically implemented.