DIN 24041 (Lg) covers the requirements for slotted hole perforated sheet. Reproduced below: the complete specification table, the tolerance classes, and the companion and equivalent standards referenced when ordering to this document.
DIN 24041 (Lg) — Scope
DIN 24041 (Lg) specifies the designation system, dimensions and tolerances of slotted hole perforated sheet — mesh count or nominal opening, wire diameter and the permissible aperture deviations. Alloy chemistry, mechanical testing and delivery condition are governed by separate documents in the same standards family.
Tolerance Classes
DIN 24041 (Lg) defines tolerance limits on the average aperture and on the maximum single aperture, tightening as the aperture gets finer. For test-sieve duty the tighter ISO 3310-1 tolerances apply instead of the general cloth tolerances — specify sieve grade explicitly if the mesh will be used for particle-size analysis.
Specifications Defined by DIN 24041 (Lg)
| Slot width (mm) | Slot length (mm) | Bridge (mm) | Open area (%) | Thickness (mm) | Reference standard |
|---|---|---|---|---|---|
| 0.5 | 10 | 1.0 | 28 | 0.8 | DIN 24041 |
| 1.0 | 12 | 1.5 | 33 | 1.0 | DIN 24041 |
| 1.5 | 20 | 2.0 | 38 | 1.2 | DIN 24041 |
| 2.0 | 20 | 2.5 | 40 | 1.5 | DIN 24041 |
| 3.0 | 25 | 3.0 | 43 | 2.0 | DIN 24041 |
| 5.0 | 40 | 4.0 | 45 | 2.0 | DIN 24041 |
Equivalent Standards
Where direct equivalents exist (ISO ↔ ASTM ↔ DIN), they are listed on the parent Slotted Hole Perforated Sheet page. Confirm against the specification table on this page — nominally equivalent documents can differ in tolerance limits.
Companion Standards
DIN 24041 (Lg) controls the geometry of slotted hole perforated sheet. Companions frequently cited alongside it: ISO 565 / ASTM E11 (test-sieve aperture series), ISO 3310-1 (test sieves of metal wire cloth), ISO 4783 (selection of wire and aperture combinations), ISO 9044 (industrial woven wire cloth), and ISO 2941 (collapse/burst rating for finished filter elements).
Specifying Slotted Hole Perforated Sheet Beyond the Standard
- Slot size: Width × length, e.g. 1 × 10 mm; the width controls retention.
- Pattern: Staggered slots for strength, straight rows for maximum open area.
- Orientation: State whether slots run along or across the material flow.
When Slotted Hole Perforated Sheet Is Not the Right Choice
Not for retaining round particles smaller than the slot width — a round-hole sheet or wire cloth is better.
