Hardness Test of Mechanical Pencil Leads
Mechanical pencil leads are produced by compounding graphite and a polymeric resin. The symbols B and H indicate density (blackness) and hardness, but these properties are judged by the density of lines drawn on drawing paper by a density measurement machine. On the other hand, there is still no scientific definition of pencil lead hardness.
This article introduces an example of a hardness test of mechanical pencil leads by using the SHIMADZU DUH-211 Dynamic Ultra-micro Hardness Tester.
- Content Type:
- Application
- Document Number:
- LAAN-A-HN-E012
- Product Type:
- Materials Testing & Inspection, Hardness Testing / Viscosity & Flow Testing
- Keywords:
- Sintered product, powder, powder metallurgy, polymeric resin, hardness test, ultra-micro hardness tester, instrumented hardness tester, DUH, brittle material, Martens hardness, mechanical pencil, graphite, Hydrocarbon Processing Industry (Petrochemical, Chemical), Glass, Cement, Ceramics, Other inorganic material, DUH-211
- Language:
- English
- File Name:
- jpi618009.pdf
- File Size:
- 1,017kb
