Stainless Steel Strip Slitting: Width Tolerance, Camber and Edge Quality Explained

Quick answer: Slitting is how a wide stainless coil becomes narrow strip to your width — and the three quality words that decide whether the strip runs in your press are width tolerance (typically ±0.05–0.25 mm depending on class), camber (edge straightness, often ≤ 1 mm per 2 m for precision work), and edge condition ( slit, deburred, or dressed). Specify all three in the RFQ, or you'll get whatever the service center's standard running is.

What Width Tolerance Can Slitting Hold?

The tolerance depends on strip thickness, yield strength and slit width — thinner, harder and narrower strip is harder to hold. Half-hard 301 holds a tighter window more easily than soft annealed 304 of the same gauge, because soft strip bows and wobbles more through the knives — one of the points covered in our coil & strip guide.

What Is Camber and Why Does It Jam My Feeder?

Camber is the strip curving sideways instead of running straight — the arc a free length of strip forms on a flat table. In a progressive die or tube mill, camber walks the strip off-center: pilots pick up off-position, tube mill rolls mis-form, scrap accumulates. Typical procurement language:

• General work: camber ≤ 2 mm per 2,000 mm
• Precision stamping/tube re-roll: ≤ 1 mm per 2,000 mm

Camber traces back to slitting set-up (knife side pressure, uneven blade clearance across width) and to as-rolled crown in the parent coil. Good slitters measure and certify it; average ones don't — so state the limit and ask for the measurement.

Which Edge Condition Should I Order?

• Standard slit edge: as-cut, slight burr — fine for most bending and forming
• Deburred / broken edge: burr minimized for handler safety and coating work
• Dressed or rolled edge: burr removed and edge worked smooth — required for some drawn parts and for re-rolling into tube where a burr initiates weld defects

If the strip re-rolls into tube, say so in the RFQ — the tube maker's weld quality starts at your slit edge, and A269/A213 tubing specs punish bad edges.

What Belongs in a Strip RFQ?

1. Grade + condition (e.g. 301 1/2-hard, 304 annealed) with standard (ASTM A666, EN 10151)
2. Thickness with tolerance class, width with tolerance class, camber limit
3. Edge condition, coil weight and ID (core size — 300/400/508 mm matters for your uncoiler)
4. Surface finish (2B, BA, 2R) and protective film if forming stays cosmetic
5. Testing: mechanical properties per coil or per lot, flatness if post-slitting leveling is needed

FAQ

Q: Why can't I get ±0.02 mm width on soft 304 strip? A: Soft austenitic strip moves between knives and after tension release; the practical floor for stable width on soft material is around ±0.05 mm with precision tooling. If you need tighter, consider harder temper or edge dressing after slit.

Q: Does slitting affect the strip's mechanical properties? A: The slit edges are cold-worked locally, but the strip body is unchanged. What matters for forming is the parent coil's temper — see coil vs strip basics for definitions.

Q: How is strip packed for export? A: Eye-to-sky or eye-to-wall, paper/VCI interleaved, edge-protected and banded without carbon-steel contact — same contamination rules as bar and pipe in our export packing guide.