Short answer: For thin cold rolled stainless steel sheet and strip, thickness tolerance is an interval, not a single number, and it must be stated against a standard. Typical cold-rolled limits grow with gauge: roughly ±0.04 mm around 0.3–0.4 mm, ±0.05 around 0.5 mm, ±0.06–0.07 around 0.8–1.0 mm, and ±0.10–0.12 around 1.5–2.0 mm. Confirm the value for your exact width, grade and standard before ordering, because it drives forming, weight, springback and price.
Cookware, kitchen appliances, architectural panels, automotive and stamped parts all depend on gauge staying inside a band over the whole coil. A tolerance that is too loose causes weight and springback drift; one that is needlessly tight raises price. This guide gives order-of-magnitude figures and how to confirm the right one.
Representative Thickness Tolerances (cold rolled, indicative)
| Nominal gauge | Typical tolerance band (±) | Note |
|---|---|---|
| 0.3 mm | ±0.04 mm | Very thin; edge measuring only misses the profile |
| 0.4 mm | ±0.04 mm | Confirm narrow-strip capability |
| 0.5 mm | ±0.05 mm | Common cookware and light panel gauge |
| 0.6 mm | ±0.05 mm | Confirm across-width profile |
| 0.8 mm | ±0.06 mm | Confirm across-width profile |
| 1.0 mm | ±0.07 mm | Panel and stamped-part gauge |
| 1.2 mm | ±0.08 mm | Confirm width effect on capability |
| 1.5 mm | ±0.10 mm | Heavier panel and part gauge |
| 2.0 mm | ±0.12 mm | Upper end of the thin range |
These are representative order-of-magnitude figures, not a substitute for the governing EN 10088-2, JIS G4305 or ASTM A480 table. Confirm the exact tolerance for your width, grade and surface with the supplier.
What Buyers Should Evaluate
- Name the governing standard and the exact nominal gauge, width and grade so the tolerance is drawn from the right table.
- Specify how thickness is measured (points across the width, not only at the edge) so the crown profile is captured.
- Separate the tolerance you must hold from the one that only raises cost; loosen where the part does not need it.
Before ordering, review the general thickness and width tolerance guide and the thickness selection guidance for the specific part.
Common Purchasing Mistakes
- Ordering “0.5 mm sheet” without a tolerance, then rejecting coils that sit outside a limit you never named.
- Specifying an unrealistically tight gauge band that raises price without improving stamping or weight.
- Measuring thickness only at the edge and missing the crown profile across the coil width.
State the nominal gauge and the tolerance against a standard, agree where measurements are taken, and keep a sample of the certificate with each coil for traceability.
Recommended RFQ Wording
State grade, surface (2B/BA), nominal gauge with the tolerance and governing standard (e.g. EN 10088-2, JIS G4305, or the mill profile), width, length (or coil weight), strip edge/burr limits, measurement points, quantity, certificate type (EN 10204 3.1), and destination.
Confirm with the supplier whether the gauge profile is controlled for the full width of the coil, and whether narrower strip is cut from a width that keeps the tolerance you need.
How Still Steel Supports the Project
Still Steel supplies cold rolled stainless steel sheet and strip from 0.2 to 2 mm with defined thickness tolerance and traceability, plus cut-to-length (开平) and slitting from one source. Send your gauge, tolerance and standard to vip@still-steel.com, or discuss by WhatsApp.
Frequently Asked Questions
What thickness tolerance can I expect for 0.5mm cold rolled stainless sheet?
For a 0.5mm cold rolled sheet a typical order-of-magnitude tolerance is in the ±0.04 to ±0.05 mm range, but the exact limit depends on width and the governing standard (EN 10088-2, JIS G4305 or ASTM A480). Always confirm the precise tolerance for your width and grade against the standard you will hold to.
Does a tighter thickness tolerance cost more?
Generally yes. Holding a narrow gauge band reduces mill yield and may require secondary grinding or tighter process control, which raises the price per tonne. Specify only what your forming, springback and weight needs actually require.
Why does thickness tolerance matter for stamping and forming?
Thickness feeds directly into die clearance, material volume, force and springback. A gauge that drifts across a coil shifts press tonnage and part weight, so a defined thickness range is what keeps a run consistent.
Technical References
- EN 10088-2 stainless steels: flat products and tolerances
- JIS G4305 cold-rolled stainless steel strip
- ASTM A480/A480M dimensional tolerances for flat-rolled stainless
Reference documents support general selection principles. The final thickness tolerance must follow the applicable contract, standard and engineering review for the specific part.