Martindale

Martindale is a test of abrasion resistance — how many times a fabric can be rubbed before its surface visibly changes. The result is a number of cycles (or "rubs", sometimes "double rubs"), and it is the most widely quoted durability number in upholstery, workwear and hospitality textiles.

It is worth separating two things people both call "Martindale", because they measure different failures:

Both standards live in the ISO 12947 and 12945 families and both use the same instrument, which is why "Martindale" gets used for either. When a buyer asks for a Martindale figure, they almost always mean the abrasion cycle count. For pilling, see pilling resistance.

How the test works

A specimen is mounted in a Martindale abrasion tester and rubbed against a standard abradant — typically a wool felt, or a cotton duck / abrasive cloth depending on the standard — in a figure-eight motion under a fixed load. The machine counts the cycles until a specified level of change is reached: thread breaks, a hole forms, or the surface shows a specified appearance change. Two specimens are usually run and the average reported.

The two common families are not interchangeable:

Asking which standard a number came from is the single most useful question in this conversation. A figure from one abradant is not comparable to a figure from the other — different abradant, different load path, different endpoint. Two suppliers quoting "30,000 Martindale" from different standards can be describing genuinely different performance.

The other abrasion test: Wyzenbeek

Wyzenbeek is the older, US method (ASTM D4966 originated as a Wyzenbeek-era test) and it rubs a straight line along the warp or weft rather than in a figure-eight. Results are reported in the same cycle unit, but because the motion is directional rather than rotary, Wyzenbeek and Martindale numbers are not directly comparable. Contracts should name one method, not the number alone.

What the numbers mean in practice

These are general industry bands used when specifying upholstery and workwear, not measurements of any particular cloth. Every supplier should be asked for a figure on your construction.

Cycles scale with fabric weight. A heavier cloth at 40,000 cycles is a materially different hand and cost from a lightweight at the same figure. Cycle counts are also sensitive to construction: a dense, tightly woven cloth at a given GSM will outlast an open, loosely woven one of the same weight. Comparing cycles across different constructions tells you less than the number suggests.

What to ask a mill or supplier

1. Which standard — ISO 12947-2 or ASTM D4966? Without this the number is not interpretable.
2. Warp or weft, or an average — direction matters more in Wyzenbeek than Martindale.
3. Abradant and load — a test that was made easy by a soft abradant is not comparable.
4. Tested on the finish you are buying — abrasion resistance changes after calendaring, coating or washing (see calendering); ask whether the tested cloth was greige or finished.
5. Pilling grade reported separately if you need it — do not accept a cycle count as a substitute.

Why this matters commercially

Abrasion is the most common reason a textile fails cosmetically long before it fails structurally. A fabric can have excellent tensile strength and still look ruined after a year of office-chair friction, because abrasion is about surface appearance — the nap thinning, the sheen going flat, fibres breaking at the crown — not about the cloth pulling apart.

For a woven greige mill, this is one of the few specification conversations where the buyer genuinely wants the mill's loom and finishing setup rather than a trading intermediary's datasheet, because the cycle count follows the construction.

Weaverine does not publish test certificates on this page. Martindale, like every other performance test, depends on the specific construction, finish and standard — a figure on a generic page would be a figure for a cloth nobody is buying. Ask for the test report against your own specification, and treat any mill that publishes one number for all its fabrics with suspicion.