When friction is the predominant factor causing deterioration of your materials, abrasion and wear testing will give you data to compare materials or coatings and can help you predict the lifetime of a material or coating.
Abrasion testing is used to test the abrasive resistance of solid materials. Materials such as metals, composites, ceramics, and thick (weld overlays and thermal spray) coatings can be tested with these methods. The intent of abrasion testing is to produce data that will reproducibly rank materials in their resistance to scratching abrasion under a specified set of conditions.
Standard abrasion testing methods should not be used to predict the exact resistance of a given material in a specific environment. Its value lies in predictively ranking materials in a similar relative order of merit as would occur in an abrasive environment.
A customized wear testing program, on the other hand, can be configured to closely mimic actual operating conditions, including temperature and fluids, and direction of wear. This custom approach will result in wear testing data that is much more relatable to the specific work environment in question.
Abrasion Testing Methods
Element's abrasion testing capabilities include Taber abrasion, rubber wheel abrasion, pin abrasion, RCA abrasion, and more.
Pin abrasion testing (ASTM G132) is performed using two pin specimens; the subject material and a reference material. A pin is positioned perpendicular to an abrasive surface, which is mounted on and supported by a flat surface. The pin abrasion testing machine permits relative motion between the abrasive surface and the pin surface. The wear track of the pin is continuous and non-overlapping. The pin rotates about its axis during testing. The amount of wear is determined by weight loss. ASTM G132 calls for a reference specimen to be included in the calculation in order to correct for abrasivity variations.
Rubber wheel abrasion testing (ASTM G65) is performed by loading a rectangular test sample against a rotating rubber wheel and depositing sand of controlled grit size, composition, and flow rate between them. The mass of the test sample is recorded before and after conducting a test. To develop a comparison table for ranking different materials, it is necessary to convert this mass loss data to volume loss in order to account for the differences in material densities.
Taber abrasion testing (ASTM D1044 and ASTM D4060) is performed by mounting a flat specimen, either square or round, to a turntable platform that rotates two abrasive wheels over the specimen at a fixed speed and pressure. One wheel rubs the specimen outward toward the periphery and the other, inward toward the center. Specimen mass (ASTM D4060) or haze (ASTM D1044) is measured pre-test and post-test to allow for material property comparisons. A wide variety of abrasive wheels are available for Taber abrasion testing, depending upon the project goal.
Other abrasion methods offered:
- Los Angeles Abrasion Testing per ASTM C131
- Martindale Abrasion Testing per ASTM D4966
- RCA Abrasion Testing per ASTM F2357
- Rotary Platform Abrasion per ASTM C501, ASTM D1117, ASTM D3389, ASTM D3884, ASTM D6037, ISO 9352
- Solder Mask Abrasion Testing (Pencil Method) per IPC-TM-650
- Wyzenbeek Abrasion Testing per ASTM D4157
Wear Testing Methods
Element has a range of unique wear testing methods, including pin-on-disc, blade-on-block, and medical device wear testing.
Blade-on-Block Wear Testing typically utilizes an object (block) that articulates back and forth on a stationary specimen (blade) while being subjected to a constant normal load. Blade-on-Block testing is especially useful when a specimen needs nonstandard environmental conditions or a higher load force than Pin-on-Disk testing can achieve.
Medical Device Wear Testing is utilized to characterize the tribological properties of a medical device by simulating the kinematics and kinetics of the human body, in an environment that closely simulates intended use. Commonly tested devices include hip, knee, and spinal devices. Read More
Pin-on-Disk Wear Testing (ASTM G99, ASTM G133, and ASTM F732) involves abrading two materials – one material is machined into a pin, the other into a disk – to determine a variety of properties, including wear rates and frictional force coefficients. Pin-on-Disk can be conducted at elevated temperatures or in submerged environments to more accurately simulate “real life” wear conditions. Read More
ASTM C131, ASTM C33, ASTM C501, ASTM D1044, ASTM D1117, ASTM D3389, ASTM D3884, ASTM D4060, ASTM D4157, ASTM D4966, ASTM D6037, ASTM F1978, ASTM F2357, ASTM F732, ASTM G132, ASTM G133, ASTM G65, ASTM G77, ASTM G99
Automotive Test Standards
Daimler-Chrysler MS-3589 Mirror-Rearview-Flat or Convex
Delco TM-224 Abrasion Test: Hot Stamped Finishes and Labels
ECCA - T11 M.E.K./Solvent Rubbing Test - Organic coatings on metallic substrates
EN 1096-2 Glass In Building - Coated Glass
ES-X60210 (Mitsubishi Motors) Plastic Parts - Interior Trims
Kia MS 210-05 Wear and Scratch resistance
Toyota Engineering Standard TSL2105G Wear and Scratch resistance
GME 60269 General Motors Abrasion Resistance of Metallized, Painted, Printed Plastic Parts
GME 60368 General Motors f Abrasion Resistance of Artificial Leather
GME 8797 General Motors Stability of Textile decoration Materials against Mechanical Load
GMW 14125 General Motors Linear Abrasion Testing
GMW 14130 General Motors Resistance to Marring or Scuffing
GMW 14688 General Motors Plastic Scratch and Mar Resistance
SAE ARP 1536A
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