Technical Foundation
What Is a Wire Cloth Sieve?
A test sieve is a woven wire mesh, mounted in a rigid frame, used to separate and measure particle size distribution by passing a sample through a stack of progressively finer mesh openings. Mesh is specified by two related but distinct standards: US mesh number (openings per linear inch, per ASTM E11) or metric micron/millimeter opening size (per ISO 3310), and the two do not convert on a simple linear scale because wire diameter changes with mesh count.
Wire cloth is woven from stainless steel (most common, corrosion-resistant) or brass, at a wire diameter matched to the opening size to balance screen strength against maximum open area. Sieves are certified to a tolerance class (ASTM E11 defines Precision, Inspection, and Compliance grades) based on how tightly actual openings must track the nominal mesh size — critical for regulated pharmaceutical, food, and materials testing where sieve analysis is a specified QC method.
Prefer a quick quote?
Get Wire Cloth Sieves Pricing in Your Inbox
Skip the search — tell us the mesh size/micron opening, frame diameter and standard (ASTM/ISO) and we will come back with pricing.
| Spec | What It Means | Why It Matters |
|---|---|---|
| Mesh Standard | ASTM E11 (US mesh/inch) vs. ISO 3310 (mm/micron opening) | Standards use different reference systems — specify the standard your test method requires, not just a mesh number |
| Opening Size | From ~4in (coarse) down to 20 micron (fine, ASTM E11) | Determines the finest particle size the sieve will retain vs. pass through |
| Wire Cloth Material | Stainless steel (T304/T316) most common, brass also used | Stainless resists corrosion from repeated washing and abrasive samples; brass is lower cost for non-corrosive use |
| Frame Diameter | 3in, 8in, 12in standard diameters (ASTM); 100mm, 200mm, 300mm (ISO) | Frame diameter must match your shaker/sieve stack equipment, not just the sample volume |
| Tolerance Class | ASTM E11 Precision, Inspection, Compliance grades | Higher grades hold tighter opening-size tolerance, required for regulated or referee testing |
Shop Wire Cloth Sieves
Browse Wire Cloth Sieves Sub-Categories
Organised by frame style and mesh spec. Pick a sub-category, or describe your particle size range and let ChatMRO match the sieve.
How it works
From Half-Remembered Part Number to PO, in Three Steps.
Ask
Type an MPN, paste a spec sheet, or describe the part in plain English. ChatMRO understands engineer-speak.
Compare
Side-by-side specs, cross-references, and equivalents from multiple sources — without the clutter of endless browser tabs.
Quote & Buy
Request a quote or add to cart. Volume discounts, VAT-aware pricing, and consolidated procurement — all in one place.
Applications
Where Wire Cloth Sieves Get Used
Wire cloth sieves are specified anywhere particle size distribution is a controlled quality or process parameter.
Construction Materials Testing
Aggregate and sand gradation analysis per ASTM C136 for concrete and asphalt mix design.
Pharmaceutical & Powder QC
Particle size verification for powder blends and granulations under USP and cGMP testing protocols.
Food Processing
Grain, flour and powdered ingredient sizing to meet product specification and regulatory standards.
Mining & Mineral Processing
Ore and crushed material gradation analysis to control downstream processing and product spec.
Chemical & Materials Manufacturing
Raw material and finished powder particle size control as part of incoming inspection and QC release.
FAQ
Wire Cloth Sieves Questions, Answered
What's the difference between ASTM E11 and ISO 3310 sieve standards?
ASTM E11 specifies sieves by US mesh number (openings per linear inch) and is standard in North America, while ISO 3310 specifies openings directly in millimeters or microns and is standard internationally. The two aren't a simple linear conversion because wire diameter varies with mesh count, so a sieve certified to one standard should not be assumed equivalent to a similarly-numbered sieve under the other without checking the actual opening size.
How do I choose the right mesh size for my sample?
Select a sieve stack that brackets your expected particle size distribution, typically with several mesh sizes to build a full gradation curve rather than a single pass/fail screen. Your test method (ASTM C136, USP, an internal spec) usually specifies the required mesh sizes directly — check that before ordering individual sieves.
What does the tolerance class on a test sieve mean?
ASTM E11 defines Precision, Inspection, and Compliance tolerance grades that control how tightly the actual woven openings can vary from the nominal mesh size, plus how many oversized openings are permitted. Regulated or referee testing typically requires Inspection or Compliance grade sieves with a certificate of conformance; routine QC screening can often use a lower grade.
Should I choose stainless steel or brass wire cloth?
Stainless steel (typically T304 or T316) resists corrosion from repeated washing, moisture, and abrasive or reactive samples, and is the standard choice for pharmaceutical, food, and most industrial testing. Brass is lower cost and adequate for dry, non-corrosive materials where the sieve sees light use.
How do I maintain sieve accuracy over repeated use?
Wire cloth stretches and openings enlarge with repeated mechanical stress and abrasive samples, so sieves should be periodically recalibrated or replaced, particularly for regulated testing. Hand-wash rather than brush aggressively, dry thoroughly to prevent corrosion, and inspect the mesh under light for stretched or torn openings before each critical test.
Keep browsing
Related Categories
Explore More
Find Your Next Part Now.
Describe a part number, spec or what it does.