Description
Pencil Hardness Test
Pencil Hardness Test according Wolff Wilborn provides in a simple method to test the scratch hardness of coatings. We use pencils in a range of 6B to 8H hardness-grade for this test. With constantly pressure on pencil will moved scratching over the surface under a 45° angle. Afterward an optical assessment is carried out to see which pencil hardness damages the surface. Delivered with a set of 20 Koh-i-noor pencils and also a pencil sharpener.
TQC Pencil Hardness Test acc. Wolff Wilborn
The models differ in load on the pencil tip (in grams). This differs per standard. See also ‘Order Information’.
The purpose of scratch hardness tests is to determine the resistance of coating materials or lacquers to scratch effects on the surface. This test is of particular value for furniture or vehicle lacquers, but is also a useful aid in the development of synthetic resins or other film forming materials.
Scratch hardness generally measured by moving a sharp object under a known pressure over the test surface. The result may either be the value of the pressure required to scratch through the test material if a scratching tool of constant hardness is used, or the hardness of the scratching tool is varied while constant 750 g pressure is applied.
- Twenty pencils from grade 9B to 9H are use with a standard holder.
- Pencils are move over the surface under a fix pressure and also a fix angle to ensuring the least amount of operator error
- Pencils can be easily exchang to minimize down time during the test.
TQC Pencil hardness test kit
Our pencil hardness test kit comes with the pencil hardness tester unit, a set of 20 Koh-i-noor pencils, an aluminum metal box and a pencil sharpener. It’s also supplied with both a manual and a calibration certificate.
No fuss Pencil hardness testing
Our Wolff-Wilborn Pencil hardness tester moves the pencils over a sample’s surface under a fixed pressure and a fixed angle. This ensures the least amount of operator error. The pencils can also be exchanged to minimize down time during the test.
Pencil hardness testing to international standards
Our Wolff-Wilborn Pencil hardness tester will help you to carry out pencil hardness testing to the most stringent of international standards, including: ISO 15184, ASTM D3363, JIS K-5400, JIS K-5600, ECCA-T4-1, BS 3900-E19, SNV 37113, SIS 184187, NEN 5350, MIL C 27 227.
Our testing knowledge is hard to beat!
We’ve learnt a thing or two about best practice when it comes to hardness testing to international standards. We like to share this insight with our customers through the knowledgebase of this website.
Here you’ll find some of the blogs we have published, like this one – which looks at protecting your coating performance with scratch hardness testing. Or maybe you’d prefer to read about Microhardness testing: the basics?
Finally, click here to view a video of our Pencil Hardness Test acc. Wolff Wilborn device in action.
TQC Pencil Hardness Test Models
Model 750g – Art. No. VF2378
Most commonly used.
Complies with: ISO 15184, ASTM D3363, JIS K-5600, ECCA-T4-1, BS 3900-E19, SNV 37113, SIS 184187, NEN 5350, MIL C 27 227, also EN 13523-4.
Model 500 g -Art. Nr. VF2379
There is no standard applicable however the film industry and the LCD industry have their own standard (regulation) to inspect with the load of 500g based on the text of JIS-K560.
Model 750g and 1000g – Art. No. VF2377
Special version with two weights
Complies with: ISO 15184, ASTM D3363, JIS K-5400, JIS K-5600, ECCA-T4-1, BS 3900-E19, SNV 37113, SIS 184187, NEN 5350, MIL C 27 227, EN 13523-4.
PosiTest® PT Pencil Hardness Test.
Determines the film hardness by pencil test (Wolff-Wilborn) in accordance with ISO 15184 and ASTM D3363
- Quickly and easily evaluate the scratch resistance and also relative hardness of coatings
- 14 quality graphite pencils—6B to 6H hardness values in a protective case
- Custom aluminum pencil sharpener specifically designed for the Pencil Hardness Test—includes 5 and 6 mm reference marks for precision graphite length
- Comes complete with everything needed for testing
- Optional Pencil Cart exerts a constant force of 7.35 N (~1.65 lbf) at the specified 45° angle (included with Complete Kit)
Conforms to ISO 15184, ASTM D3363, JIS K-5600, BS 3900-E19, MIL C 27 227, ECCA-T4-1, SNV 37113, SIS184187, NEN 5350.
Simple
- Quickly and easily evaluate the scratch resistance and relative hardness of coatings in accordance with ISO 15184 and also ASTM D3363
- For use on paint, films, lacquer, and also resins
- 14 quality graphite pencils—6B to 6H hardness values – in a protective aluminum case—6B, 5B, 4B, 3B, 2B, B, HB, F, H, 2H, 3H, 4H, 5H, 6H
- Custom aluminum pencil sharpener with hardened steel blades specifically designed for the Pencil Hardness Test. Includes 5 and 6 mm reference marks for precision graphite length in conformance to national and also international standards.
- Included pack of 400 grit sandpaper for flattening pencil leads prior to testing
- Comes complete with everything needed for testing
- Two year warranty
Two PosiTest PT Kits available:
