is the Japanese Industrial Standard for carbon steel wires for cold heading and cold forging . It specifies the requirements for wires used to manufacture various fasteners and parts, such as bolts, nuts, and rivets, through room-temperature forming processes. Core Specifications
These values ensure that the wire can be cold-headed into a fastener without cracking at the head or thread root.
Ensures the wire can withstand structural loads without premature breaking. jis g3539 pdf
Major steel manufacturers often provide compliance documents (PDFs) based on the JIS G3539 specifications. Summary Table of Typical JIS G3539 Properties Standard No.: JIS G3539 Common Material Symbol: SWRCH Purpose: Cold Heading and Cold Forging Wires Usage: Bolts, Nuts, Rivets
Standard thermal treatment providing an optimal balance for moderate forming. is the Japanese Industrial Standard for carbon steel
: The wire surface must be free of harmful defects such as scale, rust, or deep scratches that could impair the forging process. Gravity Group of Companies 4. Comparison and Replacement
The official storefront of the Japanese Standards Association. Ensures the wire can withstand structural loads without
The withdrawn standard outlined the technical rules for . The purpose of this wire was to be formed into parts like screws, bolts, nuts, and rivets without cracking.
The standard includes several grades of carbon steel wire, often designated with the (Steel Wire for Cold Heading) prefix. Common grades specified under this standard include:
When customers request a material certificate, you need to prove that your low carbon steel wire meets the exact chemical and mechanical limits defined in the standard. Without the official PDF, you cannot confidently certify compliance.