The sword produced by Longquan Baojian Factory is three or four hundred yuan. How hard is it?

The sword 300 yuan or 400 yuan produced by Longquan Sword Factory belongs to the ornamental sword or performance sword series. The traditional decarburization casting process is adopted, and the hardness is 5.5 Mohs hardness.

Mohs hardness is a standard of mineral hardness. 18 12 was first proposed by German mineralogist Frederick Moss (German). The pyramid-shaped Jin Gangzuan needle with Mohs hardness is scratched on the surface of the tested mineral, and Mohs hardness is used in mineralogy or gemology. The measured scratch depth is divided into ten grades to indicate hardness (scoring method): talc (talc) 1 (minimum hardness), gypsum (gypsum) 2, calcite (calcite) 3, fluorite (fluorite) 4, apatite (apatite) 5 and orthoclase (feldspar); Orthoclase; Periclass) 6, timely (Shi Ying) 7, topaz (topaz) 8, corundum (corundum) 9, diamond (diamond) 10.

The hardness value is not an absolute hardness value, but a value expressed in the order of hardness. When applied, hardness is determined by scoring comparison. If a mineral can scrape calcite but not fluorite, its Mohs hardness is 3 ~ 4, and so on. Mohs hardness is only relative hardness, which is rough. Although the hardness of talc is 1, that of diamond is 10 and that of corundum is 9, the absolute hardness measured by microhardness tester is 4 192 times that of talc, and that of corundum is 442 times that of talc. Mohs hardness is easy to apply and is often used in field work. For example, nail hardness is about 2.5, copper coins are 3.5-4, steel knives are 5.5, and glass is 6.5.

Sword produced by Longquan Baojian Factory, from 300 yuan to 400 yuan. Iron is usually forged into stainless steel by decarbonization technology and cast into swords. According to the Mohs hardness table, the Mohs hardness of stainless steel is 5.5 degrees.