Pencil Hardness Tester By Caltech Engineering Services

Pencil Hardness Tester will determine the hardness or scratch resistance of painted surfaces on horizontal and vertical planes. Small and portable can be used in virtually any location. Traceable test method uses high quality hardness graded pencils. Excellent repeatability and supplied in pouch with box of 12 quality pencils. Pencils hardness range from 6B to 6H. Choice of other grade pencils are supplied on request.

Pencil Hardness Test is a popular test in the industry. Our Pencil Hardness Tester is used to determine scratch (mar) and/or gouge hardness of coatings. The test is inexpensive can be performed quickly. However, there are several limitations in the test as described in ASTM D-3363.

The amount of pressure used and the angle of the pencil to the substrate affect the results. Pencil hardness tester with mechanical driven speed and with constant variable load also available to eliminate operator errors. More detailed information is given in ISO 15184, BS3900-E19, ASTM D3363, GB/T 6739-86 Standards.