Valve Hardness Testing

Valve Hardness Testing

The valves we produce will definitely undergo Valve Hardness Testing before leaving the factory. For the valves installed in the water supply system where the medium flow is strictly required to be cut off in special occasions, the valves with larger diameters transport the valves on the pipelines of flammable and explosive medium, etc. Do a hardness test. Valve Hardness Testing is one of the important indicators for testing material properties, and it is also one of the fastest and most economical testing methods.

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You Need to Know About Valve Hardness Testing!

ValveHardness Testing

Hardness indicates the ability of a material to withstand the pressure of a hard object on its surface. It is one of the most important performance indicators of metallic materials and, in general, higher hardness equates to better wear resistance.
Commonly used hardness indicators are:
  • Vickers
  • Brinell
  • Rockwell
Let’s explore them one by one.

Vickers hardness (HV)

Use a load within 120 kg and a diamond square cone indenter with an apex angle of 136° to press into the surface of the material, and divide the surface area of the material indentation pit by the load value, which is the Vickers hardness value (HV), which is medium hardness.

Brinell hardness (HB)

Press a hardened steel ball of a certain size (generally 10mm in diameter) into the surface of the material with a certain load (generally 3000kg) and keep it for a period of time. After the load is removed, the ratio of the load to its indentation area is the Brinell hardness value ( HB) in kilogram force/mm2 (N/mm2).

Rockwell hardness (HR)

When HB>450 or the sample is too small, the Brinell hardness test cannot be used and the Rockwell hardness measurement is used instead. It uses a diamond cone with an apex angle of 120° or a steel ball with a diameter of 1.59 and 3.18mm, which is pressed into the surface of the tested material under a certain load, and the hardness of the material is obtained from the depth of the indentation.
The different hardness of the test material is expressed in three different scales:
HRA: It is the hardness obtained by using a 60kg load and a diamond cone indenter, and is used for materials with ordinary hardness (such as cemented carbide, etc.).
HRB: It is the hardness obtained by using a 100kg load and a hardened steel ball with a diameter of 1.58mm. It is used for materials with lower hardness (such as annealed steel, cast iron, etc.).
HRC: It is the hardness obtained by using a 150kg load and a diamond cone indenter, and is used for materials with high hardness (such as quenched steel, etc.). 

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Why choose XinHui valve?

Customized on demand

We very much welcome customers to bring your requirements in the industry, our industrial valve solutions include customized on demand! Use the best materials to produce standard compliant valves, If you need valve customization services, please contact us immediately

Valve quality

Xinhui valve strictly controls the quality of the products in each process; on the other hand, it improves the work quality of the employees; and constantly pursues the high performance and high quality of the products, and is committed to becoming the preferred brand of valve products for the majority of users. .

Professional Services

Our salesman will answer your professional industry questions, product questions, transportation questions, etc. Our service personnel are online 7*12 hours. If you encounter time difference problems, please wait patiently for our reply, and we will reply you as soon as possible The problem.

High and new technology

As a high-tech enterprise in China, we can provide complete valve sample drawings, technical support for valve production process, technical support such as maintenance manuals, and strength calculation books. Frequently Asked Questions about Valve Operation.

R&D innovation

Xinhui Valve has invested a lot of manpower and funds in the innovative research and development of valves, and opened laboratories, inspection rooms, and R&D rooms. 20 kinds of new products are developed every year. Customized industry-specific valves for customers, dozens of products under severe valve conditions.


International Standard

The valves we produce meet various international testing indicators, and all kinds of valves are manufactured and accepted according to relevant domestic standards such as GB and JB, as well as international standards such as ANSI, API, JIS, and BS. DIN. Please contact us for special production standards.

We are not only a manufacturer of valves, but also a disseminator of industry knowledge

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