Information on the most widely used ASTM standards within the materials testing industry
ISO 8295, ASTM D1894
The Coefficient of Friction (COF) Testing Fixture is a dedicated auxiliary accessory matched with universal material testing machines, designed to measure the static coefficient of friction (SCOF) and kinetic coefficient of friction (KCOF) between two flat material surfaces. It strictly complies with core international testing standards including ISO 8295 and ASTM D1894 , and can also meet equivalent national standards for plastic films, sheets, paper, textiles and coated materials.
This fixture simulates the actual sliding contact state of materials during production, packaging and transportation, providing accurate friction data to evaluate anti-slip, scratch-resistant and processing performance of test samples.
General introduction
The Coefficient of Friction (COF) Testing Fixture is a dedicated auxiliary accessory matched with universal material testing machines, designed to measure the static coefficient of friction (SCOF) and kinetic coefficient of friction (KCOF) between two flat material surfaces. It strictly complies with core international testing standards including ISO 8295 and ASTM D1894 , and can also meet equivalent national standards for plastic films, sheets, paper, textiles and coated materials.
This fixture simulates the actual sliding contact state of materials during production, packaging and transportation, providing accurate friction data to evaluate anti-slip, scratch-resistant and processing performance of test samples.
Key Features
Horizontal Test Platform: Flat, smooth stainless steel base with leveling adjustment feet to guarantee horizontal placement, eliminating tilt interference during sliding; the platform surface can be replaced with different counterface materials as required.
Standard Sliding Sled: A precisely weighted metal block with standard mass specified by ISO 8295 and ASTM D1894. The bottom surface of the sled adheres the test specimen, and the sled connects to the load cell via a low-friction pull wire.
Pull Force Transmission Assembly: Low-resistance pulley and thin flexible traction line to avoid extra friction resistance affecting test force readings; the traction direction remains strictly horizontal.
Specimen Clamping Mechanisms: Detachable clamping frames for both platform sample and sled sample, ensuring no wrinkling, warping or displacement of thin films, papers and soft sheets during testing.
Leveling & Calibration Components: Bubble level and fine-tuning knobs for horizontal correction; calibration weights for regular force verification.
Fix one material sample flat on the horizontal platform, attach the matching counter sample to the bottom of the standard sled.
Place the sled on the platform sample, connect the sled to the testing machine’s force sensor horizontally.
The testing machine pulls the sled at a constant specified speed (standard speed: 150 mm/min for ASTM D1894, consistent with ISO 8295 requirements).
The load cell records the peak force required to initiate sliding (static friction force) and the stable average force during continuous sliding (kinetic friction force).
The system calculates coefficients of friction via the formula:
Static COF = Maximum static friction force / Normal load (sled weight)
Kinetic COF = Average steady sliding force / Normal load (sled weight)
ASTM D1894: Standard Test Method for Static and Kinetic Coefficients of Friction of Plastic Film and Sheeting
ISO 8295: Plastics — Film and sheeting — Determination of coefficients of friction
Compatible with related auxiliary standards for flexible packaging, coated paper and synthetic leather friction testing
Standard sled weight and contact area fully align with the dimensional and mass requirements of both standards, ensuring data comparability across laboratories.
Ultra-flat, low-deflection platform avoids edge warping errors that would skew friction test results.
Non-slip, damage-free clamps suit ultra-thin films, soft textiles and rigid plastic sheets without sample deformation.
Adjustable pulling speed range covers the fixed test speed mandated by ISO 8295 and ASTM D1894.
Modular design allows quick disassembly, cleaning and counterface replacement (stainless steel, glass, plastic, rubber etc.) for multi-material matching friction tests.
High rigidity structure eliminates fixture vibration during sliding, improving repeatability of test data.
Flexible packaging: BOPP, PET, PE, PVC plastic films, composite laminates
Paper & printing: Coated paper, release paper, cardboard, adhesive label stock
Polymer sheets: Rigid plastic panels, rubber sheets, coated decorative films
Textile & leather: Synthetic leather, woven fabric, non-woven materials
Industrial coatings: Anti-slip coatings, release coatings, anti-friction surface treatments
Main Technical Specification
Load capacity: typically 10 N to 50 N
Weighted sled: 200g
Table Width: 150mm
Table Length: 550mm
Standard
ISO 8295 specifies a standardized laboratory method to determine the static (starting) coefficient of friction and the dynamic (sliding) coefficient of friction of plastic films and sheeting — most commonly when the film slides over itself (film/ film) or over another substance (film/ metal, film/ other plastic surface, etc.).
ASTM D1894 quantifies surface slip resistance of plastic films and thin sheets sliding against identical film, metal, glass or other flat substrates, generating empirical friction data for production quality control and material performance evaluation. Test static (starting) and kinetic (continuous sliding) friction coefficients of plastic film & thin sheeting; primary for flexible packaging materials.
ISO 21182 specifies test procedures to measure static coefficient of friction (μs) and dynamic coefficient of friction (μD) for light conveyor belts. Quantify how "grippy" or "slippery" a belt cover surface is when sliding against a standardized steel panel under a defined normal load.
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