hardness test blocks West Midlands

Calibration Test Blocks

If your business relies heavily on accuracy and compliance, calibration test blocks are an essential tool for maintaining the performance of your hardness testing equipment. Indentec supplies high-precision, fully certified calibration test blocks manufactured for laboratories, research facilities, quality assurance teams and many other industries that rely on dependable hardness measurements. 

Whether you operate in aerospace, automotive, medical engineering, heavy manufacturing, or materials science, our calibration test blocks provide the verified reference standards needed to ensure that every hardness test you conduct is accurate and compliant with international regulations.

At Indentec, we combine decades of hardness testing knowledge with state-of-the-art manufacturing and in-house, certified calibration processes, delivering calibration test blocks trusted worldwide for precision and long-term reliability.

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Calibration Test Blocks for Every Hardness Scale

Indentec manufactures a range of calibration test blocks suitable for all major hardness testing methods. Each reference block is calibrated to meet industry global standards and undergoes rigorous testing at our in-house laboratory to guarantee stability.

Rockwell Calibration Test Blocks

Our Rockwell calibration blocks cover the full range of Rockwell scales, including HRB, HRC, and superficial scales. Manufactured using premium-grade materials, Rockwell test blocks offer exceptional repeatability and surface integrity, ensuring that your hardness testers deliver accurate results every time. Each block is certified and traceable to national and international standards such as ISO 6508 and ASTM E18.

Vickers Calibration Test Blocks

Vickers test blocks are precision-engineered for micro and macro Vickers applications. Their fine surface finish and hardness stability make them suitable for laboratories and high-precision environments where even the smallest deviations can compromise results. Each calibration test block is certified according to ISO 6507 and ASTM E384, providing the assurance needed for microhardness evaluation.

Brinell Calibration Test Blocks

Brinell test blocks are ideal for calibrating both traditional and modern Brinell hardness testers. Available in multiple Brinell hardness values, they are meticulously manufactured to provide durable and stable reference points for testing softer metals, cast materials, and larger industrial components. All Brinell calibration blocks comply with ISO 6506, ASTM E10, and other relevant global standards.

Knoop Calibration Test Blocks

For delicate materials, coatings, and thin cross-sections, Indentec supplies Knoop calibration blocks ideal for microhardness testers. These blocks are designed with exceptional surface quality, enabling highly accurate indentation assessment. They meet all international Knoop hardness standards and provide long-term performance for research and specialist applications.

hardness test blocks

Industries That Benefit From Calibration Test Blocks

Industries that rely on material performance and durability are likely to need calibration test blocks to keep processes running. We have worked with a wide range of businesses and sectors that rely heavily on material resistance:

Aerospace: In aerospace engineering, material reliability is non-negotiable. Calibration blocks ensure that hardness testers used to validate aircraft components and alloys remain accurate, supporting safety, certification, and performance testing.

Automotive: Vehicle manufacturers use calibration test blocks to verify hardness results for major components such as gears, axles, engine parts, and structural elements. Accurate hardness testing is fundamental for ensuring durability and meeting strict industry regulations

Manufacturing & Industrial Engineering: From metal fabrication to heavy machinery production, calibration blocks help maintain consistent hardness measurements that support quality control, process monitoring, and material selection.

Medical Devices & Implants: When manufacturing components such as implants, surgical instruments, and precision devices, accurate hardness testing is essential. Calibrated test blocks ensure compliance with medical-grade material standards.

Research & Material Science: Universities, laboratories, and materials research centres rely on calibration test blocks to maintain accuracy in experimental setups, microhardness analysis, and advanced material testing.

Energy & Power Generation: From testing turbine components, pipelines, or renewable energy materials, calibration blocks help ensure that hardness testers remain fully compliant and accurate.

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The Benefits of Calibration Test Blocks From Indentec

Thanks to our years of experience and knowledge within hardness testing and the manufacturing of calibration test blocks, we have built up our reputation across the UK and Europe. Our team works hard to ensure you receive a service that supports your business and its operations, from our range of products, helpful customer service, to our in-house calibration and certifications.

Unmatched Expertise: Our team includes specialists in hardness testing, calibration, materials engineering, and more. Our depth of knowledge ensures that every calibration test block is produced with industry accuracy and backed by expert support.

Precision Manufacturing: Using advanced machining and surface finishing processes, we guarantee calibration blocks that deliver consistent, repeatable hardness values and exceptional long-term stability.

Full Traceability & Certification: All calibration test blocks are supplied with detailed certification and full traceability to international hardness standards. This supports audit compliance, accreditation processes, and quality management systems.

ISO-Accredited Quality Assurance: Our manufacturing and calibration processes meet globally recognised quality standards, including ISO 9001 and the appropriate hardness testing standards for each block type.

Long-Term Value: Our calibration blocks are manufactured to last. Their durability reduces the frequency of replacement, helping businesses maintain reliable testing while minimising operating costs.

Technical Support You Can Rely On: From choosing the right calibration block to interpreting hardness results, our in-house experts provide ongoing support and guidance to ensure your testing processes run smoothly.

Get High-Precision Calibration Test Blocks from Indentec

If you work within an industry that relies heavily on accurate and compliant hardness testing, our range of calibration test blocks is manufactured to your needs. Depending on what you’re testing, we calibrate Rockwell, Brinell, Knoop and Vickers test blocks. 

Contact our team today to find out more about our process, what calibration test blocks you might require or to request a free quote. 

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hardness test blocks from Indentec, West Midlands

Hardness Calibration Test Blocks FAQs

Hardness reference blocks are precision-engineered samples with a known hardness value. They serve to calibrate and validate the performance of hardness testing machines, ensuring consistent and accurate readings.

In the calibration process, a hardness test block is positioned beneath the machine’s indenter, which then measures its hardness. The result is compared with the block’s certified hardness value, allowing verification that the testing machine delivers accurate measurements.

Hardness test blocks come in various shapes, such as cylindrical, rectangular, and spherical forms, and are made from materials like steel, tungsten carbide, or ceramics to suit different testing requirements.

To maintain measurement accuracy, it’s recommended to calibrate hardness testing machines at set intervals—typically once a year or after a defined number of uses—using certified hardness test blocks.