When the same specimen shows double-digit differences in abrasion loss between two labs, the consumables — not the machine — are usually the cause.
Abrasion testing measures how much material is lost under a defined load and path. Load, abrasive sharpness and contact condition are the three governing variables, and consumables carry all three.
1. Specifications at a Glance
| Method | Key Consumables & Parameters |
|---|---|
| Martindale ISO 12947 | Wool abradant + felt (≥ 140 mm); total mass (595 ± 7) g → 9 kPa, (795 ± 7) g → 12 kPa; coated fabrics (198 ± 2) g → 3 kPa with 600# waterproof paper |
| Taber ASTM D3884 | Calibrase wheels CS-10/CS-17, Calibrade H-18/H-22; arm load 250 g, weights give 500 / 1000 g; strips S-33 (360 FEPA), S-42 (180 ANSI-CAMI) |
| DIN ISO 4649 | Aluminium oxide grit 60 sheet, ~474 × 402 mm; vertical force 10 N; 40 m traverse |
| Crockmeter AATCC 8 / ISO 105-X12 | Standard cotton cloth; finger (16 ± 0.1) mm dia., 19 × 25.4 mm block for pile; force (9 ± 0.2) N; track (104 ± 3) mm |
Grades are not interchangeable: CS-10 simulates mild wear, H-18 cuts far harder — results can differ several-fold.
2. Replacement & Refacing
| Consumable | Criterion |
|---|---|
| Martindale abradant & felt | Renewed before every test; every 50,000 rubs on longer runs |
| Taber sandpaper strips | Every 200–500 cycles |
| Taber wheels | Retire at 44.4 mm (1.75 in) diameter — down to the label. Calibrase wheels expire |
| Taber refacing | New wheels 2 × 50 cycles; 25 or 50 before a test. An S-11 disc is single-use |
| DIN abrasive sheet | Usable while reference loss stays within 180–220 mg; above 220 mg it is too sharp, below 180 mg too blunt |
⚠️
The most dangerous failure. An over-used strip or abradant reads falsely low, so a non-conforming product passes.
3. Remove · Align · Secure
- Never touch wheel or finger faces with bare hands; never bend a DIN sheet.
- Keep the head concentric with the turntable (commonly ≤ 0.05 mm eccentricity); apply strips flat.
- Tighten diagonally in stages; run unloaded to confirm no noise or wobble.
A crescent-shaped mark instead of a uniform ring means eccentricity or an uneven wheel face.
4. Recalibrate After Every Change
- Martindale — verify 595 g / 795 g for 9 kPa / 12 kPa
- Taber — break in new wheels 2 × 50; verify 250/500/1,000 g; brush off debris
- DIN — re-check with the reference compound roughly every 10 tests; retest if spread exceeds 15 mg
- Crockmeter — verify 9 N and track length; condition per ISO 139
5. Storage Essentials
Temperature- and humidity-controlled (required for S-42 strips); flat, unloaded, unbent; condition wool abradant and cotton cloth per ISO 139; seal and date leftovers.
In one line: not about replacing more often — right method, logged intervals, aligned mounting, recalibration after change, controlled storage.
Post time: Aug-31-2026