White Papers


White Papers


Steffen Korzak
Laboratory Services Leipzig
Photogrammetry, Surface testing

+49 341 392981 66


Ilka Töpel
Laboratory-Service Leipzig
Surface testing

+49 341 392981 67

Video Oberflächenprüfungen

Pencil hardness test

Also scratch hardness test according to Wolff-Wilborn. Fast and uncomplicated test for testing surfaces. A pencil is drawn over a coated surface at an angle of 45°.  The pencil is pressed onto the component with a certain force. A distinction is made between the hardness of the pencil, which leaves only a writing trace on the test piece, and the hardness of the pencil, which leaves a scratch on the component. ASTM D 3363 also speaks of groove hardness and scratch hardness.

Standards: ASTM D 3363, BS 3900-E19, ISO 15184, JIS K 5600-5-4, SES N3243

[Translate to English:] Bleistifthärteprüfung Durchführung
[Translate to English:] Bleistifthärteprüfung Ergebnis

Society for Materials Testing
Ensuring quality | Accompanying development | Analyzing damage | Passing on knowledge

GWP Gesellschaft für Werkstoffprüfung mbH
Georg-Wimmer-Ring 25
85604 Zorneding/München

Tel. +49 8106 994110
Fax +49 8106 994111

Handelsregister München
HRB 53245
USt.-IdNr. DE131179893

General Manager
Dr. Julius Nickl