304 stainless steel plate thickness tolerance standard
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304 Stainless Steel Plate Thickness Tolerance Standard
The thickness tolerance of 304 stainless steel plates depends on the manufacturing process (hot-rolled or cold-rolled) and applicable international standards. Below are the common tolerance standards used globally:
Common International Standards for Thickness Tolerance
| Standard | Description |
|---|---|
| ASTM A480/A480M | General standard for flat-rolled stainless steel plates |
| EN 10029 | Tolerance for hot-rolled steel plates ≥3 mm thick |
| EN ISO 9445-1 | Tolerance for cold-rolled stainless steel strips and sheets |
| JIS G4305 / JIS G4304 | Japanese standards for cold/hot-rolled stainless plates |
Tolerance Reference by Thickness (ASTM A480M – Cold Rolled)
| Nominal Thickness (mm) | Tolerance (± mm) |
|---|---|
| 0.30 – <0.40 | ±0.04 |
| 0.40 – <0.50 | ±0.05 |
| 0.50 – <0.80 | ±0.06 |
| 0.80 – <1.00 | ±0.07 |
| 1.00 – <1.50 | ±0.08 |
| 1.50 – <2.00 | ±0.09 |
| 2.00 – <2.50 | ±0.10 |
| 2.50 – <3.00 | ±0.13 |
Tolerance Reference for Hot-Rolled Plates (EN 10029 – Class A)
| Nominal Thickness (mm) | Tolerance (Upper / Lower mm) |
|---|---|
| 3 – <6 | +0.6 / –0.4 |
| 6 – <10 | +0.8 / –0.4 |
| 10 – <15 | +1.0 / –0.4 |
| 15 – <25 | +1.2 / –0.5 |
| 25 – <40 | +1.4 / –0.6 |
Note: Cold-rolled plates have tighter tolerances and are preferred for precision applications. Tolerance class may be specified as Class A (standard), B, C, or D (special precision) under EN standards.
Purchasing Tip
When sourcing 304 stainless steel plates, always verify the applicable standard and tolerance class required for your project. This ensures compliance in critical applications such as pressure vessels, precision fabrication, or structural components.
If you are looking for 304 stainless steel plate, you can contact us immediately. We have spot stock and can provide guidance and help for your project!
