Hardness in materials science refers to a material’s resistance to deformation, particularly permanent deformation, indentation, or scratching. Hardness measurement is a critical parameter in determining the suitability of a material for a specific application. There are several scales for measuring hardness, but two of the most common are the Brinell Hardness Number (BHN) and the Rockwell Hardness Number (HRB).
The BHN to HRB Calculator is a tool designed to convert the hardness value of a material from the Brinell scale to the Rockwell B scale. This conversion is significant for engineers, designers, and quality control professionals who work with materials data across different measurement systems. By providing a simple and accurate conversion formula, the calculator enables quick comparisons and ensures that specifications are met across diverse materials and industries.
Formula of BHN to HRB Calculator
The formula to convert Brinell Hardness Number (BHN) to Rockwell Hardness Number B (HRB) is:
HRB = (500 / (BHN + 3.2))
Where:
BHNis the Brinell Hardness Number.HRBis the Rockwell Hardness Number B.
This formula provides a straightforward method for converting BHN values to HRB, facilitating seamless communication and specification adherence across different domains and standards.
General Terms Table
To further aid in understanding and practical application, below is a table of general conversion terms from BHN to HRB. This table serves as a quick reference for those who may not have the time or the means to perform calculations each time.
| BHN | HRB (Approx.) |
|---|---|
| 100 | Value |
| 200 | Value |
| 300 | Value |
| 400 | Value |
| 500 | Value |
Note: The exact HRB values can be calculated using the provided formula, as the conversion may vary slightly based on specific material characteristics.
Example of BHN to HRB Calculator
For a material with a Brinell Hardness Number of 200, the Rockwell Hardness Number B can be calculate as follows:
HRB = (500 / (200 + 3.2)) = Value
This example illustrates how to use the conversion formula to determine the HRB value from a given BHN, enabling accurate and consistent material specification across different hardness scales.
Most Common FAQs
Converting between these two hardness scales allows for greater flexibility and understanding when working with different materials and specifications. It ensures that engineers and professionals can accurately compare and select materials for their specific needs.
The conversion formula provides a close approximation, but it’s important to note that the inherent differences between the testing methods can lead to slight variations. Always consult with material datasheets or professional standards for critical applications.
The formula is specifically design for converting BHN to HRB. While a reverse calculation is theoretically possible, it’s recommend to use a direct formula or tool design for converting HRB to BHN to ensure accuracy.