What is HB in steel?

BHN is designated by the most commonly used test standards (ASTM E10-14 and ISO 6506–1:2005) as HBW (H from hardness, B from brinell and W from the material of the indenter, tungsten (wolfram) carbide). In former standards HB or HBS were used to refer to measurements made with steel indenters.

What is DPH hardness?

Diamond pyramid hardness (DPH) is a measurement of a material’s hardness, equal to the value of the load divided by the surface area of the indentation. This testing can be used for all metals and has one of the widest scales among hardness tests.

Where can I get a HB hardness test?

Almost all the foundries have HB testers in China. Some foundries have the Rockwell hardness testers, but very seldom metal foundries will use the VH testers. The following is the conversion table for HB, HRC and VH. We hope this comparison table can help you to convert between them.

What’s the difference between HBW and HBS hardness?

HBW indicates that the indenter is a cemented carbide and is used to determine materials with a Brinell hardness value below 650. The same test block, when other test conditions are completely the same, the two test results are different, the HBW value is often greater than the HBS value, and there is no quantitative rule to follow.

What does HBW stand for in Brinell hardness test?

Note that, the term HBW stands for Hardness Brinell Wolfram carbide. Wolfram carbide (= tungsten carbide) underlines the use of tungsten carbide balls, as opposed to the (softer) steel balls previously used (HBS). Fig. 3: Brinell Hardness Test

Which is the best test for hardness of steel?

A variety of hardness -testing methods are available, including the Vickers, Brinell, Rockwell, Meyer and Leeb tests. Although it is impossible in many cases to give an exact conversion, it is possible to give an approximate material-specific comparison table for steels .