1. Physical characteristics
1.1 Color
The color of steels can vary according to their chemical composition and heat treatment. Carbon steels may have a gray or dark blue color due to the presence of carbon, while stainless steels generally have a silver color due to the presence of chromium and nickel.
The color of steels can also be affected by heat treatment operations, such as annealing, which can give a reddish or blue color. However, it is not a reliable indicator of physical properties such as density, melting point, thermal or electrical conductivity. These properties must be determined by specific tests for each steel.
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Physical characteristics
Chemical characteristics
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