Products: Hardness Tester

Hardness Tester: Ensuring Material Strength and Durability

A hardness tester is an essential tool for determining the resistance of a material to deformation under pressure or impact. Hardness measurements play a vital role in industries such as manufacturing, aerospace, automotive, and metallurgy, ensuring that materials meet quality and safety standards. Different hardness testers are available, each designed to measure the hardness of various materials under specific conditions. Below is a detailed overview of our product offerings and how they cater to different hardness measurement needs.

Leeb Hardness Tester

The Leeb hardness tester measures the hardness of materials by dropping a small impact body onto the surface and analyzing the rebound velocity. This type of tester is ideal for large or heavy components and provides fast and reliable results in the field.

Portable and easy to use for on-site testing

Measures hardness of metals like steel, cast iron, and non-ferrous alloys

Provides quick results without requiring sample preparation

Supports conversion to other hardness scales (Brinell, Vickers, Rockwell, etc.)

Webster Hardness Tester

The Webster hardness tester is a handheld tool commonly used for testing aluminum alloys and soft metals. It provides a quick reading by applying force with a specially designed clamp and is known for its simplicity and portability.

Barcol Hardness Tester

The Barcol hardness tester is specifically designed to measure the hardness of soft metals, composites, and plastics. Its portability and ease of use make it ideal for testing softer materials that cannot be evaluated using conventional hardness testers.

Shore Hardness Tester

The Shore hardness tester measures the hardness of rubber, elastomers, and soft plastics. It uses a small indenter to penetrate the surface of the material, offering precise readings based on material softness. Shore hardness testers are available in different scales (Shore A, D, etc.) for various types of soft materials.

Measures the hardness of rubber, thermoplastics, and elastomers

Available in different scales (Shore A, D) for various materials

Simple operation with quick readings

Portable and reliable for both field and lab use

Ultrasonic Hardness Tester

The ultrasonic hardness tester is a high-precision device that uses ultrasonic vibrations to measure the hardness of small areas or thin materials. It is ideal for non-destructive testing and offers a more detailed measurement compared to traditional methods.

Uses ultrasonic waves for high-precision measurements

Suitable for thin coatings, small parts, and delicate materials

Portable design with real-time results

Supports multiple hardness scales (Vickers, Rockwell, Brinell)

Desktop Hardness Tester

The desktop hardness tester is a stationary device used in laboratories and quality control departments to measure hardness with high precision. It can perform multiple hardness scales (such as Rockwell, Vickers, and Brinell) and is suitable for a wide range of materials.

Hardness Tester Application

Leeb Hardness Tester Application

  • Inspection of heavy machinery components, pipes, and pressure vessels
  • On-site quality control of heat-treated materials
  • Maintenance and inspection of large industrial structures

Webster Hardness Tester Application

  • Testing aluminum profiles in aerospace and automotive industries
  • Quality control of metal pipes and fittings
  • Ensuring the uniformity of sheet metals and soft materials

Barcol Hardness Tester Application

  • Inspection of plastic parts in manufacturing industries
  • Testing fiberglass-reinforced structures in marine applications
  • Quality control of composite materials

Shore Hardness Tester Application

  • Testing rubber seals, tires, and gaskets
  • Ensuring the quality of elastomers in industrial applications
  • Evaluating the hardness of foam and soft plastics

Ultrasonic Hardness Tester Application

  • Testing small machine components and thin coatings
  • Inspecting heat-treated metal parts for hardness uniformity
  • Non-destructive testing of delicate or precision components

Desktop Hardness Tester Application

  • Laboratory analysis of metal hardness in R&D departments
  • Quality control of products in manufacturing plants
  • Evaluating ceramic hardness for industrial applications

Table of Different Types of Hardness Testers

Feature Leeb Hardness Tester Webster Hardness Tester Barcol Hardness Tester Shore Hardness Tester Ultrasonic Hardness Tester Desktop Hardness Tester
Measurement Method Measures rebound velocity of an impact body Uses a clamping mechanism to apply pressure Uses a spring-loaded indenter for surface penetration Uses a small indenter to test softness Uses ultrasonic waves for precision measurement Uses mechanical pressure or indenters for lab testing
Material Focus Metals, cast iron, non-ferrous alloys Aluminum, copper, soft metals Soft metals, plastics, fiberglass Rubber, elastomers, soft plastics Thin coatings, metals, small parts Metals, ceramics, composites
Portability Highly portable for on-site use Handheld, easy to carry Lightweight and easy to operate Portable, suitable for field or lab Portable for non-destructive testing Stationary, designed for laboratory use
Non-Destructive Testing (NDT) Yes Yes Yes Yes Yes No (usually involves indentations)
Precision Moderate Moderate Moderate High for soft materials High precision for small or thin areas Very high, suitable for R&D
Applications Large machinery, pipelines, pressure vessels Metal profiles, pipes, fittings Plastic parts, composites, fiberglass Tires, gaskets, rubber seals Thin coatings, heat-treated parts Lab testing, R&D, batch testing
Industry Use Oil & gas, construction, manufacturing Aerospace, automotive, manufacturing Marine, plastics industry Automotive, industrial elastomers Aerospace, precision engineering R&D, quality control, academic research
Advantages - Works on large components - Converts to other scales (Rockwell, Brinell, etc.) - Quick readings - Minimal sample preparation - Simple to use - Ideal for soft materials - Accurate for rubber and plastic - Multiple Shore scales available - Measures coated metals without removing the coating - High precision - Multiple hardness scales (Rockwell, Vickers, Brinell) - Automated functions available
Limitations Cannot measure soft coatings Limited to soft metals and alloys Not suitable for thick materials Cannot measure metals Best for small areas, not for large components Requires fixed samples, not portable

Summary of Key Differences

Leeb Hardness Tester: Ideal for large machinery and metals; portable with fast results.

Webster Hardness Tester: Best for quick checks on aluminum and soft metals in production lines.

Barcol Hardness Tester: Specially designed for soft materials like plastics and composites.

Shore Hardness Tester: Used for testing rubber and soft plastics with different scales (A, D, etc.).

Ultrasonic Hardness Tester: Provides precise measurements for thin coatings and small components.

Desktop Hardness Tester: Perfect for R&D and lab-based batch testing with high accuracy.

Hardness Tester FAQ

1. What is a hardness tester?

A hardness tester is a device used to determine the hardness of a material by measuring its resistance to deformation, penetration, or indentation. It is widely used in industries like manufacturing, automotive, aerospace, and plastics to ensure product quality and compliance with standards.


2. How does a hardness tester work?

Hardness testers apply force using an indenter or probe onto the surface of a material. The depth or size of the indentation, or the rebound of the impact, determines the material’s hardness. Each type of tester (Leeb, Shore, Barcol, etc.) follows different principles for specific material types.


3. What are the different types of hardness testers?

  • Leeb Hardness Tester: Measures hardness through rebound velocity.
  • Webster Hardness Tester: Used for quick testing of soft metals like aluminum.
  • Barcol Hardness Tester: Measures the hardness of soft plastics and composites.
  • Shore Hardness Tester: Ideal for testing rubber and soft plastics.
  • Ultrasonic Hardness Tester: Uses ultrasonic waves for high-precision testing on thin materials.
  • Desktop Hardness Tester: Stationary equipment used for research and quality control labs.

4. How do I select the right hardness tester for my application?

The right hardness tester depends on several factors, including:

  • Type of material (metal, plastic, rubber)
  • Sample size and thickness
  • Testing environment (portable vs. laboratory)
  • Required precision and compliance with standards
    Consulting with a supplier or manufacturer can help ensure you choose the right device.

5. Can hardness testers measure coated materials?

Yes. Ultrasonic hardness testers and certain portable models can measure coatings without damaging the surface. Shore and Barcol testers are also useful for measuring the hardness of soft coatings and plastics.


6. How do you maintain and calibrate a hardness tester?

To maintain accuracy:

  • Regularly clean the device and remove dust or debris from the probe or indenter.
  • Calibrate the tester according to the manufacturer’s guidelines, typically using standard calibration blocks.
  • Store the device properly to prevent damage, especially during transportation for portable models.

7. What industries use hardness testers?

Hardness testers are essential in various industries:

  • Automotive: Testing metals and plastic components.
  • Aerospace: Measuring hardness for quality control in metal parts.
  • Manufacturing: Evaluating heat-treated parts for strength.
  • Plastics: Ensuring the quality of plastic sheets and composites.
  • Rubber Production: Measuring rubber hardness with Shore testers.

8. Are hardness testers portable?

Some hardness testers are designed for portable use (like Leeb, Webster, and Barcol testers), making them ideal for field inspections. Others, such as desktop models, are stationary and used in laboratories for precise measurements.


9. What are the differences between Leeb and Shore hardness testers?

  • Leeb hardness testers: Measure the rebound of an impact to determine hardness; suitable for metals and large components.
  • Shore hardness testers: Measure the resistance of rubber, plastic, and soft materials to indentation; available in different Shore scales (A, D, etc.).

10. Can I use a hardness tester for non-destructive testing (NDT)?

Yes. Most portable hardness testers (Leeb, ultrasonic, Webster, and Barcol) offer non-destructive testing, meaning they can measure hardness without damaging the sample. Desktop testers may require a small indentation, making them less suitable for NDT applications.

Why Global Clients Choose Us?

At NDTMachine, we are committed to providing high-quality thickness gauges that meet the demands of today’s industries. Our products are designed with a focus on accuracy, durability, and ease of use, ensuring that you can trust them for critical measurements. With years of experience in manufacturing NDT equipment, we have built a reputation for excellence and innovation.

40 Years of Expertise

We have 40 years of experience in the professional production of ultrasonic flaw detectors, an annual output of more than 10,00 ultrasonic flaw detectors, thickness gauges, ultrasonic probes and calibration blocks.

Talented Engineers and support team

As of September 2021, we have a total of 125 employees, including nearly 45 professional and technical workers who are masters or doctorate degree holders.

Advanced production equipment

We have Complete machining workshop, CNC, CNC machine tools, and more than 50 other types of processing equipment,to ensure high-precision product parts.

Excellent After-Sales Service

We provided excellent after-sales service, including fast delivery, online training, immediate feedback of trouble shotting.

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