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HRC vs. HRB: What's the Difference?

Edited by Huma Saeed || By Sawaira Riaz || Published on February 7, 2024
HRC (Rockwell C Hardness) and HRB (Rockwell B Hardness) are scales measuring material hardness; HRC is used for harder materials, HRB for softer materials.

Key Differences

HRC, or Rockwell C Hardness, measures the hardness of harder materials like steel. HRB, or Rockwell B Hardness, is used for softer materials, such as non-ferrous metals.
Huma Saeed
Feb 07, 2024
HRC testing uses a diamond cone indenter with a larger load, suitable for harder materials. HRB testing employs a steel ball indenter with a smaller load, effective for softer materials.
Sawaira Riaz
Feb 07, 2024
The HRC scale ranges from 20 to 70, indicating a higher hardness level. The HRB scale typically ranges from 0 to 100, representing softer material hardness.
Sawaira Riaz
Feb 07, 2024
HRC is critical in applications requiring durable and wear-resistant materials. HRB is essential in industries where softer, malleable materials are needed.
Janet White
Feb 07, 2024
HRC values are often found in tools and high-strength components. HRB values are commonly seen in softer metal products and components.
Aimie Carlson
Feb 07, 2024
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Comparison Chart

Material Type

Harder materials like steel
Softer materials like non-ferrous metals
Sawaira Riaz
Feb 07, 2024

Indenter Used

Diamond cone
Steel ball
Huma Saeed
Feb 07, 2024

Load Applied

Larger load
Smaller load
Sawaira Riaz
Feb 07, 2024

Scale Range

20 to 70
0 to 100
Sawaira Riaz
Feb 07, 2024

Typical Applications

Tools, high-strength components
Softer metal products, malleable components
Aimie Carlson
Feb 07, 2024
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HRC and HRB Definitions

HRC

HRC scale ranges from 20 to 70.
A high HRC value, like 65, is typical for high-quality knives.
Sawaira Riaz
Jan 07, 2024

HRB

HRB measures the hardness of softer materials.
The HRB of this aluminum piece is 50, suitable for its application.
Sawaira Riaz
Jan 07, 2024

HRC

HRC values signify the level of material hardness.
The HRC rating is crucial in selecting materials for construction.
Aimie Carlson
Jan 07, 2024

HRB

Uses a steel ball indenter for testing.
HRB testing with a steel ball indenter is effective for softer metals.
Huma Saeed
Jan 07, 2024

HRC

Uses a diamond cone indenter for testing.
For measuring HRC, a diamond indenter is employed due to the material's hardness.
Sawaira Riaz
Jan 07, 2024

HRB

Key in evaluating malleable material hardness.
Materials for bending processes often have an HRB rating.
Janet White
Jan 07, 2024

HRC

Important for wear-resistant material applications.
Components with a high HRC are chosen for their durability.
Harlon Moss
Jan 07, 2024

HRB

HRB values indicate softness and malleability.
HRB is an important factor in selecting metals for forming.
Sawaira Riaz
Jan 07, 2024

HRC

HRC measures the hardness of harder materials.
The HRC of this tool steel is 55, indicating its high hardness.
Sawaira Riaz
Jan 07, 2024

HRB

HRB scale ranges from 0 to 100.
An HRB value of 95 indicates a relatively soft material.
Sawaira Riaz
Jan 07, 2024

FAQs

What does HRC stand for?

Rockwell C Hardness.
Sawaira Riaz
Feb 07, 2024

What type of indenter is used in HRC testing?

A diamond cone indenter.
Sawaira Riaz
Feb 07, 2024

What load is applied in HRB tests?

Smaller loads for softer materials.
Sawaira Riaz
Feb 07, 2024

What materials are suitable for HRB testing?

Softer materials like non-ferrous metals.
Aimie Carlson
Feb 07, 2024

How is the HRC scale ranged?

From 20 to 70.
Harlon Moss
Feb 07, 2024

What is HRB?

Rockwell B Hardness.
Huma Saeed
Feb 07, 2024

What is the range of the HRB scale?

From 0 to 100.
Janet White
Feb 07, 2024

What is the load range for HRC tests?

Larger loads for harder materials.
Janet White
Feb 07, 2024

What materials are tested using HRC?

Hard materials like steel.
Sawaira Riaz
Feb 07, 2024

Why is HRC important in tool making?

It indicates the durability and wear resistance of tools.
Harlon Moss
Feb 07, 2024

Do higher HRB values indicate softer materials?

Yes, higher HRB values signify softer materials.
Aimie Carlson
Feb 07, 2024

Can HRC be used for plastic materials?

No, it's more suited for harder materials.
Aimie Carlson
Feb 07, 2024

How does temperature affect HRC measurements?

Extreme temperatures can affect the hardness and therefore the HRC values.
Aimie Carlson
Feb 07, 2024

What indenter does HRB use?

A steel ball indenter.
Sawaira Riaz
Feb 07, 2024

Are higher HRC values indicative of higher hardness?

Yes, higher HRC values mean greater hardness.
Janet White
Feb 07, 2024

Is HRB applicable to steel?

Only if it’s relatively soft steel.
Sawaira Riaz
Feb 07, 2024

What is the significance of HRB in manufacturing?

It determines the suitability of materials for bending and forming.
Aimie Carlson
Feb 07, 2024

Can HRC and HRB values be converted?

Yes, but with specific conversion tables.
Aimie Carlson
Feb 07, 2024

Which industries rely heavily on HRB testing?

Industries that use softer, malleable metals.
Janet White
Feb 07, 2024

Is HRB testing relevant in automotive manufacturing?

Yes, especially for components requiring softer metals.
Sawaira Riaz
Feb 07, 2024
About Author
Written by
Sawaira Riaz
Sawaira is a dedicated content editor at difference.wiki, where she meticulously refines articles to ensure clarity and accuracy. With a keen eye for detail, she upholds the site's commitment to delivering insightful and precise content.
Edited by
Huma Saeed
Huma is a renowned researcher acclaimed for her innovative work in Difference Wiki. Her dedication has led to key breakthroughs, establishing her prominence in academia. Her contributions continually inspire and guide her field.

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