In the world of structural engineering and steel fabrication, precision is non-negotiable. If you work with hot-rolled steel plates, sheets, and strip, you have likely encountered the term .
JIS G 3193 is not a standalone specification but rather a for other material specifications. When you specify a material like SS400 to JIS G 3101, the dimensional tolerances must comply with JIS G 3193 unless otherwise specified in the purchase agreement.
When working with JIS G 3193 PDFs, several important considerations apply:
Tolerances widen slightly, typically ranging around ±0.45 mm to ±0.70 mm. jis g 3193 pdf
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Unlike specific material property standards like JIS G 3101 (structural steel) or JIS G 3106 (welded structures), . It is referenced by these material standards to define what constitutes an acceptable tolerance for thickness, flatness, width, and length. What is covered under JIS G 3193?
No. JIS G 3193 specifically covers hot-rolled carbon steel sections for general structures. For stainless steel shapes, refer to JIS G 4317 (Stainless steel hot-rolled sections). In the world of structural engineering and steel
If you are working with hot-rolled steel in structural, automotive, or general engineering industries—particularly when collaborating with Japanese partners or complying with international standards—you will likely encounter the standard.
Note: For specific projects requiring higher precision, buyers can negotiate "restricted tolerances" with the steel mill. 2. Width Tolerances
| Dimension Description | Permitted Tolerance | | :--- | :--- | | Depth (Height) of section | ±3.0mm to ±4.0mm depending on size | | Flange width | ±3.0mm to ±5.0mm | | Web thickness | +0.5mm to -0.3mm (varies by nominal thickness) | | Flange thickness | +0.5mm to -0.3mm | | Length | +40mm / 0mm for standard orders | When you specify a material like SS400 to
Modern Building Information Modeling (BIM) software like Revit, Tekla Structures, or AutoCAD requires precise section libraries. Most Japanese steel section libraries are built directly from JIS G 3193 data. Having the official PDF allows you to audit those digital libraries for accuracy.
The 2019 revision introduced changes regarding the definition of "strip" and updated tolerance tables to align more closely with international standards (like ISO 4995). Using an outdated PDF could lead to non-compliant fabrication or rejected material shipments.
JIS G 3193 outlines maximum permissible flatness deviations (waving or warping) over a specified distance (usually 1,000 mm or 2,000 mm). It also limits —the greatest deviation of a side edge from a straight line. Controlling camber is vital for automated laser cutting and CNC profiling. Calculating Weight and Mass Under JIS G 3193