Overview
The TQC sheen VF6500 Pasteur hardness gauge is a simple, portable instrument for testing the hardness of materials. Originally developed by Walter Colman, it was used during World War II to evaluate the hardness of materials, especially for soft materials such as hard plastics, aluminum alloys, etc. The instrument meets ASTM D2583 standards.
Features
1. Portable design, light weight, only 1 pound 2 ounces, easy to use in hand.
2. Easy to operate, no experience required, can be used in any location and space.
3. Dial readings are displayed immediately, on a scale of 0 to 100, without waiting or preloading.
4. Equipped with a suitcase, adjustment wrench and spare indenter for easy portability and maintenance.
Principle
The Pasteur hardness gauge works by pressing a spring-loaded indenter point against the surface of the material, the hardness of which determines the distance of the indenter point Cang, which is read on the dial by a tension spring and a lever. The indenter point has a flat tip and is suitable for effective hardness measurement of soft materials, but non-curved surfaces.
Applications
Aluminium, soft metal, plastic, fiberglass, tanks, surfaces, fire department ladders, composites, rubber or leather, laminates, lead
Steps
1. Place the indenter point perpendicular to the measured surface.
2. Apply a large pressure to drive the spring-loaded indenter point into the material.
3. Read the hardness reading on the dial, ranging from 0 to 100.
Notice
Only for homogeneous materials, granular, fibrous, or rough structural materials may cause large changes in readings.
- Film thickness should be at least 1/32 inch and the minimum distance from the indenter point to the edge of the sample is 1/8 inch.
The test area should be smooth and free of mechanical damage.
- On very soft metals, the highest reading should be used because the cold flow allows the indenter point to continue to penetrate.
- Very soft materials cannot establish a uniform correlation between different hardness measurement systems, it is recommended to determine the hardness limits of each material through testing.
