Rolled metal from warehouse and on order

AZOVPROMSTAL

We offer the best steel prices

+38 (097) 475-20-95

Sheet steel in Mariupol, Dnipro and Kiev

There are more than 2000 tons of sheet products in the company's warehouse. Various grades of steel, including st45, 65G, 10HSND, 09G2S, 40X, 30HGSA and foreign analogues S690QL, S355, A514, etc.
Steel rental on
order

In the shortest possible time, we will produce any quantity of sheet steel of specified dimensions

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100 minerals and precious stones according to the degree of hardness

100 минералов и драгоценных камней по степени твёрдости

The Mohs hardness Scale is a practical system for comparing the hardness of minerals. It was proposed by the German mineralogist Friedrich Moos in 1812

Hardness is determined by the ability of one mineral to scratch another. The scale contains ten reference minerals with increasing hardness:

1. talcum powder

2. gypsum

3. calcite

4. Fluorite

5. appatite

6. Orthoclase (feldspar)

7. Quartz

8. Topaz

9. corundum

10. Diamond

The scale is not linear — the difference between neighboring levels can vary greatly. For example, the difference in hardness between diamond (10) and corundum (9) is significantly greater than that between corundum (9) and topaz (8)