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Coating hardness testers
Buchholz coating hardness tester
Buchholz coating hardness tester is used for hardness measurements of coatings using the indentation method (bevelled disc of stainless steel block with constant test load of 500 g).
Buchholz coating hardness tester is standardized to comply with ISO 2815, BS 3900-E9, DIN 53153, NF T30-052.
Operation:
The device has to be placed on the coating for 30 seconds and the length of any subsequent indentation in the coating has to be measured using the graduated microscope. Using the conversion scale, user can get the result in Buchholz Indentation resistance units.
Standard supply:
• Buchholz hardness tester
• Case
• Operating manual
Optional accessories:
• Bevelled discs
• x20 illuminated graduated microscope
Pencil coating hardness tester
The pencil coating hardness tester is designed to determine the hardness of coatings by pencil leads in compliance with ASTM D 3363, ECCA T4, EN 13523-4, ISO 15184:2012, JIS K 5600-5-4.
The instrument is made of steel and has rectangular shape. There are two castors for movement on the surface of tested object. There is a port through the instrument and thumbscrew for fixation of the pencil at an angle of 45° to the tested surface. The design of the device provides a constant load 7.5 N (750 g) of the pencil lead on the tested coating.
Application:
The instrument is widely used for hardness testing of powder and liquid paint coatings. For high accuracy of the results, the lead of pencil should be sharpen under 90° angle. The tests begin with the softest pencil lead. If after applying it there is no sign of damage on the tested coating, user will have to repeat the test with one grade harder pencil lead. The maximum hardness value of pencil lead that leaves no traces of destruction on the coating, is the hardness value of the tested coating (for example: 3H, 2H, H, HB, B, 2B, etc.).
Standard supply:
• Instrument
• Set of pencils 9В – 9Н (20 pcs) or others
• Case
• Operating manual
Optional accessories:
• Set of pencils at the range 9В – 9Н (20 pcs)
Scratch hardness coating tester
Scratch hardness coating tester TPP-1518 (ball type) is used for hardness testing of coatings (paint, mastic, plastic and others) through determining the hardness resistance to indentation of the ball tip diameter of 1 mm. Scratch hardness coating tester is designed in compliance wth ISO6441. Also it is used for testing of the coating resistance to the scratching (ISO1518).
Application:
The device can be used on uneven surfaces, surfaces with curvature and limited sizes. The device has lightweight and can be carried in the pocket, which allows users to use it even during manufacturing processes. It is possible to set the load force through changing the spring tension and secure it with locking screws.
Standard supply:
• Instrument
• Case
• Operating manual
Optional accessories:
• Springs with other loads
• Indenters with other diameters