Metals and alloys
 What percentage of copper is in an electric motor? It must be said that on average the share of copper in the total 
 Often, for production purposes, it becomes necessary to change the parameters of steel; one of the ways to do this is
 Typically, powerful magnets are designed to find precious metals. The search magnet reacts to gold and 
 Definition As we know, all material substances can exist in three basic states: liquid,
 Density of metals Table of density ρ of materials g/cm3 (kg/dm3) and coefficients K = ρ/7.85* *
 Aluminum products are used in all spheres of human activity. The sought-after metal has a lot of valuable 
 In this tutorial I will tell you how I used bricks to create a melting furnace for
 Tool steel is a material that consists of more than 0.7% carbon.
 Figure 1 - Main types of welded joints: a - butt; b - tee; V 
 Author of the article: Sudakov A.P. Liquid stone is used in modern construction. According to its characteristics, it 










