Steel that has been mechanically trimmed to precise widths. These tolerances are exceptionally strict, often allowing only positive deviations (e.g., +25mm / -0mm) to ensure the plate is never too narrow for its intended application. C. Length Tolerances
Can feature tolerances up to ±1.5 mm or greater for exceptionally wide materials.
To ensure that the mill produces steel to your exact dimensional constraints, you must cite the exact clause from the standard. 5. Summary Table: Typical Tolerance Coverage Key Factors Key Takeaway from JIS G 3193 Thickness Nominal thickness (t) Stricter for thinner material, looser for thick plates. Width Edge type (Mill vs. Cut) Cut edges have higher accuracy (+ tolerances). Length Ordered length Mostly positive tolerance (+ Length / -0). Flatness Yield Strength & t Specific limits for wave/buckle based on grade. 6. How to Locate and Use JIS G 3193
This standard covers hot rolled carbon steel plates, sheets, and coils used in various applications, including construction, shipbuilding, and industrial machinery. It specifies requirements for chemical composition, mechanical properties, dimensions, and tolerances. jis g 3193 pdf
Accurate weight calculation is vital for logistics, crane capacity planning, and structural engineering. JIS G 3193 utilizes the standard density of steel: .
These are the critical aspects of the standard that steel mills and fabricators constantly use to ensure quality and compliance. For actual implementation, it is critical to consult the official document for the most current numerical values.
Even if a plate has the correct thickness, it may warp or curve during cooling. JIS G 3193 defines: Steel that has been mechanically trimmed to precise widths
By establishing uniformity in these categories, JIS G 3193 ensures that a designer in Tokyo can specify a steel plate and a fabricator in Osaka—or indeed, anywhere in the world adhering to JIS—knows exactly what dimensions and tolerances to expect.
The standard ensures that the actual thickness, width, length, and flatness of the steel produced conform within acceptable limits to the ordered dimensions.
By integrating JIS G 3193 dimensional protocols into your procurement pipeline, you guarantee that your raw materials match your exact engineering intents, reducing scrap rates and maximizing workshop efficiency. Length Tolerances Can feature tolerances up to ±1
Note: For specific projects requiring higher precision, buyers can negotiate "restricted tolerances" with the steel mill. 2. Width Tolerances
It is crucial for ensuring structural integrity, allowing for proper fit-up in assembly, and ensuring the mass of the steel matches the design specifications. Key Technical Specifications in JIS G 3193
The standard provides detailed tables for standard nominal sizes and their allowable deviations:
Established by the Japanese Standards Association (JSA) , JIS G 3193 acts as a supplementary standard. Rather than defining the chemical or mechanical properties of a specific steel grade, it dictates the dimensional limits for other material standards.
The standard applies to a wide range of hot-rolled steel products, including: