The mechanical properties vary depending on the wire’s diameter and class. Below is a typical range as outlined in JIS G3539:
| Wire Diameter (mm) | Tensile Strength (N/mm²) | Elongation (%) | Reduction of Area (%) | | :--- | :--- | :--- | :--- | | 1.0 – 3.0 | 340 – 490 | ≥ 25 | ≥ 50 | | 3.0 – 6.0 | 320 – 470 | ≥ 28 | ≥ 52 | | 6.0 – 14.0 | 310 – 450 | ≥ 30 | ≥ 55 |
These values ensure that the wire can be cold-headed into a fastener without cracking at the head or thread root. jis g3539 pdf
If you export fasteners to Japan or manufacture under a Japanese license, adhering to JIS standards is mandatory. The PDF allows you to verify every technical requirement.
Once you open the official PDF, the structure typically follows this outline: The mechanical properties vary depending on the wire’s
The standard strictly controls the chemical content to ensure cold heading performance. While the exact numbers are protected by copyright, the general requirements are:
| Element | Requirement (Typical Max) | | :--- | :--- | | Carbon (C) | ≤ 0.15% (low carbon grade) | | Manganese (Mn) | 0.30% – 0.60% | | Phosphorus (P) | ≤ 0.040% | | Sulfur (S) | ≤ 0.040% | | Silicon (Si) | ≤ 0.10% (some grades) | ⚠️ Warning : Free PDFs found on docplayer,
Note: Aluminum (Al) may be added for grain refinement. Always refer to the official JIS G3539 PDF for precise values.
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.
⚠️ Warning: Free PDFs found on docplayer, scribd, academia.edu, or Chinese file-sharing sites are unauthorized copies and likely violate copyright. They may also be outdated (e.g., 2003 or 2009 versions when a 2015 or 2020 revision exists).