Discover Hardness Values for PCBN, Molybdenum, Tungsten Carbide, Diamond & More

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In summary, hardness is a measure of a material's resistance to indentation or scratching and is important in scientific research for understanding a material's strength, durability, and suitability for different applications. It can be measured using various scales and factors such as chemical composition and processing techniques can affect its value. Hardness values can be used to compare different materials, but other properties should also be considered.
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engineer23
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Is there a website or book that lists hardness values for the following:

Polycrystalline Boron Nitride
Molybdenum
Tungsten Carbide
Diamond
h13
B4C
SiC
Al2O3

I've tried www.matweb.com, but they only have hardness values for some of these materials. I can't locate PCBN in their database either.

Thanks for any help!
 
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  • #2
You could try the Handbook of Refractory Carbides and Nitrides. They quote a Vickers hardness of 0.08-0.09 GPa for "hot-pressed boron nitride."
 
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I can understand your frustration in trying to find comprehensive hardness values for these materials. Unfortunately, there is no single website or book that lists hardness values for all of these materials. Each material has its own unique properties and characteristics, and therefore, the hardness values may vary. Additionally, the hardness of a material can also depend on its composition, processing method, and testing conditions.

That being said, there are several resources that can provide some information on the hardness values of these materials. The ASM Materials Handbook is a widely used reference book that contains data on various materials, including hardness values. Another useful resource is the Handbook of Hardness Testing by K. V. Ravi, which specifically focuses on hardness testing methods and data for different materials.

For specific materials, you can also check the websites of manufacturers or suppliers that specialize in these materials. They may have data on the hardness values of their products or be able to provide you with the necessary information.

In terms of the specific materials you mentioned, PCBN is a relatively new material and may not have widespread data available yet. However, you can try contacting manufacturers or research institutions that specialize in this material for more information.

Overall, the best approach would be to consult multiple sources and compare the data to get a better understanding of the hardness values for these materials. As with any scientific research, it is important to consider the reliability and accuracy of the data and to use multiple sources to verify the information. I hope this helps in your search for hardness values for these materials.
 

1. What is hardness and why is it important in scientific research?

Hardness is a measure of a material's resistance to indentation or scratching. It is an important characteristic in scientific research because it can provide insights into a material's strength, durability, and wear resistance, as well as its suitability for various applications.

2. How is hardness typically measured in scientific experiments?

Hardness can be measured using a variety of methods, including the Mohs scale, which ranks materials from 1 (softest) to 10 (hardest), and the Vickers, Rockwell, and Brinell scales, which use different types of indenters and loads to determine a material's hardness value.

3. What factors can affect the hardness value of a material?

The hardness of a material can be affected by various factors, such as its chemical composition, crystal structure, and microstructure. Heat treatment, cold working, and other processing techniques can also impact a material's hardness.

4. How can hardness values be used to compare different materials?

Hardness values can be used to compare the relative strength and durability of different materials. For example, a material with a higher hardness value will typically be more resistant to wear and deformation than a material with a lower hardness value.

5. Are there any limitations to using hardness as a measure of a material's properties?

While hardness is a useful measure of a material's strength and durability, it is not the only factor that should be considered. Other properties such as ductility, toughness, and corrosion resistance may also be important for certain applications and should be evaluated in conjunction with hardness values.

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