Hv Hardness Of Steel

Steel hardness converter steel hardness conversion table containing conversion factors for rockwell vickers brinell.

Hv hardness of steel. Since the various types of hardness tests do not all measure the same combination of material properties conversion from one hardness scale to another is only an approximate process. Vickers hardness numbers are reported as xxxhvyy e g. 3000kg 10mm ball 150kg brale 100kg 1 16 ball. 2 vickers hardness hv use a diamond square cone presser to penetrate into the surface of the material with a load of 120kg or less and an apex angle of 136.

106 hv hrc. When the hardness value is less than 20hrc because the conical part of the indenter is pressed too much the sensitivity is reduced and the hrb scale should be used instead. A higher hardness means a higher resistance and a higher difficulty to perform machining or any other similar operations on the material. Which scale is best to use.

Rockwell b is better for softer steel or relatively hard aluminum. Hardened steel quenched and tempered steel deep case hardening steel the use range of hrc scale is 20 70hrc. 440hv30 or xxxhvyy zz if duration of force differs from 10 s to 15 s e g. 105 hv hrc.

It depends on what you re measuring. The rockwell c scale is good for measuring hardened steel. 440 is the hardness number hv gives the hardness scale vickers 30 indicates the load used in kgf. Steel hardness conversion chart.

Then divide the area of indentation in the material by the load and we get the vickers hardness hv value kgf mm 2. Stainless steel hardness is usually defined as a property of the surface that represents how resistant the material is to indentation scratch or wear. For example an extremely hard steel might have a hardness of 64 hrc while a fairly soft steel might have a hardness of 70 hrb.