precision Seamless steel Pipe hardness index

Seamless precision steel hardness index

   The hardness of steel commonly used Brinell, Rockwell, Vickers hardness of three indicators.

 

Brinell hardness of steel

     In the steel standard, the most widely Brinell hardness, often to represent the diameter of the indentation hardness of the material, both intuitive and convenient. However, for hard or thin steel tube is not applicable.

 

Rockwell hardness of steel

     Steel with Rockwell hardness test Brinell hardness test, as are the indentation test methods. The difference is that it is a measure of the depth of indentation.

     Steel Rockwell hardness test is a very wide application, wherein the standard used in the steel HRC after Brinell hardness HB. Rockwell hardness suitable for determination by the extremely soft to extremely hard metal materials, which make up the Brinell method is not over Brinell method is simple, you can dial directly from the hardness tester hardness value readout. However, because of its small indentation, the Brinell hardness values as accurate.

 

The Vickers hardness of the steel

     The test tube is a Vickers hardness indentation test method for the determination of a thin layer of metallic material and the surface hardness. It has a Brinell, Rockwell The main advantage, while overcoming their basic shortcomings, but not as good as the Rockwell method is simple, Vickers method is rarely used in the steel standard.