- brinell hardnesses
- • твърдост по Бринел
English-Bulgarian polytechnical dictionary . 2013.
English-Bulgarian polytechnical dictionary . 2013.
Mohs scale of mineral hardness — The Mohs scale of mineral hardness characterizes the scratch resistance of various minerals through the ability of a harder material to scratch a softer material. It was created in 1812 by the German geologist and mineralogist Friedrich Mohs and… … Wikipedia
Nickel — This article is about the chemical element. For other uses, see Nickel (disambiguation). cobalt ← nickel → copper ↑ Ni ↓ Pd … Wikipedia
Chemical elements data references — Recommended values for many properties of the elements, together with various references, are collected on these data pages. Any changes to the infobox data should be checked against these pages, and/or the available references should be expanded … Wikipedia
Shore durometer — Two inline skates wheels with different durometer 85A and 83A. Durometer is one of several measures of the hardness of a material. Hardness may be defined as a material s resistance to permanent indentation. The durometer scale was defined by… … Wikipedia
Wikipedia:WikiProject Elements/Chemical elements data references — Recommended values for many properties of the elements, together with various references, are collected on these data pages. Any changes to the infobox data should be checked against these pages, and/or the available references should be expanded … Wikipedia