The standard defines "lateral warpage" (camber) and flatness limits to ensure the material remains usable for fabrication. 3. Measuring and Calculation
These are broken down into categories (e.g., under 3mm, 3mm to 10mm, over 10mm).
The scope of JIS G 3193 is comprehensive. It doesn't just tell you what steel you're getting; it dictates the exact degree of imperfection allowed. The key areas specified in the standard include:
: The primary official source. ANSI Webstore : Offers the 2019 version for download. jis g3193 pdf
The basic formula used for calculating the theoretical weight of carbon steel plates is:
JIS G3193 provides detailed tables for tolerances, which are critical for procurement and fabrication. The latest version (JIS G3193:2019) updates these tables. A. Thickness Tolerances (Table 4)
| | Content | |---|---| | 1. Scope | Defines the products covered and states exclusions (e.g., flat steel). | | 2. Normative references | Lists related JIS standards. | | 3. Expression of dimensions | Establishes the rules for dimension notation. | | 4. Standard dimensions | Provides standard thicknesses, widths, and lengths for plates, sheets, and strips. | | 5. Tolerances for shape and dimensions | The heart of the standard. Thickness, width, length, flatness, out‑of‑square, and edge camber. | | 6. Mass | Mass calculation method and permissible mass tolerances. | | 7. Appearance | Visual and surface quality requirements. | | Annex JA (informative) | Comparison table between JIS G 3193 and the corresponding international standard (ISO 7452:2013). | The standard defines "lateral warpage" (camber) and flatness
One of the most important limitations of JIS G 3193 is that it explicitly , a separate category of steel products governed by a different standard, JIS G 3194.
: Ensuring steel plates fit structural frames without excessive gaps. Automotive Manufacturing
The standard dictates tolerances based on the nominal thickness and width. For example, tolerances for thinner, narrower sheets are tighter than for thick, wide plates. The scope of JIS G 3193 is comprehensive
Specifies the maximum allowable waviness or distortion across the surface of a plate. High flatness is vital for laser cutting and precision machining.
Defines the greatest deviation of a side edge from a straight line. Controlling camber ensures that steel strips feed straight into roll-forming machines. 3. How to Calculate Mass Using JIS G3193
Cut lengths sliced from coils or rolled directly, typically under 3 mm in thickness.
If you manage to obtain the PDF, you will find it divided into clear sections. Here is what you need to look for: