For five-heddle weave mesh, ISO 9044 defines the specification designations and tolerances. The sections below describe the scope, the properties it leaves to companion standards, and the equivalent designations across standards bodies.
ISO 9044 — Scope
ISO 9044 specifies the designation system, dimensions and tolerances of five-heddle weave mesh — 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
ISO 9044 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 ISO 9044
| Mesh (warp x weft) | Warp wire (mm) | Weft wire (mm) | Nominal filtration (u00b5m) | Weight SS (kg/mu00b2) | Reference standard |
|---|---|---|---|---|---|
| 30x360 | 0.25 | 0.16 | 80 | 1.15 | ISO 9044 |
| 40x560 | 0.18 | 0.12 | 60 | 0.90 | ISO 9044 |
| 80x720 | 0.10 | 0.07 | 32 | 0.55 | ISO 9044 |
Equivalent Standards
ISO 9044 (industrial woven wire cloth) corresponds closely to ASTM E2016; both use the ISO 565 / ASTM E11 aperture series as their dimensional backbone.
Companion Standards
ISO 9044 controls the geometry of five-heddle weave mesh. 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).
