Hardness Testing
Browse our easy to use solutions
Hardness Testing Made Easy

DiaMet® Hardness Testing Software
DiaMet prioritizes efficiency by focusing on fast and simple operations that satisfy the needs of new operators, while also maintaining the flexibility and high level of features required by experts.
DiaMet

Offering varying levels of automation, comprehensive DiaMet software is a user-friendly system providing automatic test and measurement indentations, programmed testing sequences, and report generation. Maximize your sample throughput while maintaining consistency and limiting operating complexity.
Vickers and Knoop Hardness Testers
The Wilson Vickers/Knoop series hardness testers, equipped with high-quality optical systems and options for DiaMet software, deliver versatile and user-friendly capabilities, ensuring precision for the most accurate measurements.
Wilson® VH3300 Hardness Tester

Wilson® VH3100 Hardness Tester

Wilson® VH1102 - VH1202 Micro Hardness Testers

The Wilson VH1102 and VH1202 Vickers/Knoop series hardness testers offer reliable solutions for precise microhardness testing in both quality control and metallurgical research applications. Offering testing capabilities from 0.01-2kgf, the VH1102 features a four-position turret for single-scale testing, while the VH1202 offers more versatility with a six-position turret. Both units support measurements using the digital eyepiece or an optional integrated, high-resolution camera with DiaMet software.
Wilson® VH1150 Macro Hardness Tester

Offering a unique load range of 300gf – 50kgf in a single machine, the Wilson VH1150 is the ultimate macro-Vickers hardness tester. Experience user-friendly operation with automatic load selection, replacing the manual knob with a durable motor. The motorized turret is seamlessly integrated into a fully automatic test cycle. Add an optional high-resolution camera for effortless hardness tests using DiaMet software.
Rockwell® Hardness Testers
Segment leading Wilson Rockwell hardness testers are renowned for their attention to quality and durability. The Rockwell 574 workhorse and versatile Rockwell RH2150 are ready for high volume efforts, from production floors to worldwide research facilities. These machines accommodate a vast number of testing applications through both regular and superficial scales and aligning with ASTM E18 and ISO 6508 standards. With a proven robust design, Buehler’s Wilson Rockwell series excels in delivering top-tier hardness testing solutions.
Wilson® Rockwell 574

The Wilson 574 Rockwell Hardness Tester is best-in-class for Gauge Repeatability and Reproducibility (GR&R). This deadweight, workhorse tester is available in Regular, or Regular and Superficial Twin Scale models with a load range from 3-150kgf. Notable features include a high-precision depth measurement system, auto preload brake, and an automated main load test cycle for accurate and repeatable testing. The user-friendly, built-in USB port facilitates rapid data transfer to Microsoft® Excel®, or other applications.
Wilson® Rockwell RH2150

Engineered for high-volume production labs and catering to global research facilities, the Wilson RH2150 hardness tester offers a wide range of testing scales (1 – 187.5 kgf). Offered in two sizes (10- and 14-inches vertical capacity), it features a protective sheet metal casing, load cell protection, auto-stop clamping device, and optional indenter extensions. Its user-friendly designs includes a built-in USB port for rapid data transfer or integration with DiaMet software, offering more advanced features.
Brinell Hardness Tester
Consider a Brinell hardness tester when testing aluminum, copper alloys, steels, or cast irons with large parts like engine castings and large-diameter piping. It’s ideal for scenarios where high loads are necessary, and local variations or surface conditions affect accuracy.
Wilson® BH3000 Brinell Hardness Tester

The Wilson BH3000 Brinell Hardness Tester, with a robust 3000 kgf capacity, covers a wide range of loads from 62.5 kgf to 3000 kgf. Engineered for durability in harsh environments, it features rugged construction, heavy-duty clamping, and protection. The closed-loop system ensures quick and precise test results, while integrated hardness calculations and conversions enhance ease of use. With a flexible load range, easy set-up, and deep reading microscope option, the BH3000 provides versatility and ease of use in any lab.
Universal Hardness Tester
Built for complete versatility, Wilson Universal Hardness testers provide an innovative option for both production floors and high-volume labs. Controlled through DiaMet software, enhance machine flexibility with the ability to accommodate Rockwell, Vickers, Knoop, and Brinell indenters.
Wilson® UH4000 Universal Hardness Tester

Hardness Test Blocks
Wilson sets the industry standard for hardness test blocks-crafted from top-quality materials for unmatched uniformity and repeatability. Our wide range includes scales for Rockwell®, Brinell, Knoop, and Vickers testing, all calibrated in our accredited ISO-IEC 17025 lab in Binghamton, NY. Calibration sets are available for most Rockwell scales, ensuring ultimate accuracy and performance. We collaborate directly with mills to specify chemical composition, and perform all machining processes in-house, guaranteeing 100% inspection for ASTM compliance in thickness, flatness, parallelism, and surface roughness. View hardness block calibration page.
Wilson® Vickers Knoop Hardness Test Blocks

Available in a range of HV and HK scales in accordance with ASTM E92, ISO 6507-3 (Vickers), JIS B 7737 (Vickers), ISO 4545-3 (Knoop), and JIS B 7734 (Knoop).
Wilson® Rockwell Hardness Test Blocks

Wilson® Brinell Hardness Test Blocks

Accessories for Hardness Testers
Explore various required and optional accessories for hardness testing.
Sample Holders and Anvils

GP-HDT Sample Fixture

Additional Accessories

Hardness Testing Fundamentals
Vickers
By smoothly applying a load with a diamond indenter, Vickers hardness tests produces a square-based pyramid, and its hardness (HV) is calculated based on load and diagonal measurements. The Vickers hardness test spans two force ranges, “micro” (10 – 1000g) and “Macro” (1 – 100kg) Vickers, offering continuous values. Micro-Vickers testing is crucial for fine-scale hardness analysis, used in diverse applications, including evaluating surface treatments.
Knoop
Similar to Vickers hardness testing, Knoop uses a diamond indenter. However, instead of square indents, Knoop indenters are rhombohedral-shaped, creating an elongated indent, with the longer diagonal seven times the shorter. Unlike Vickers, only the long diagonal is measured, saving time. Knoop indents can be placed closer together, advantageous for testing thin layers. However, HK varies with load, and conversions to other scales are reliable only at the standard load (500gf).
Rockwell
Brinell
Brinell hardness testing is widely used for large parts like engine castings and piping, where high loads and large indents offer precise hardness determination. The method’s versatility is constrained by the indenter ball’s deformation with harder materials, and the importance of load and ball diameter ratios for accurate results.

Find Your Solutions
Full Lab
Metallography Solutions
Do you want to improve your process? Reach out for one-on-one help from our applications experts.

View all Products in the Buehler Product Catalog

Select a method by material

Search Buehelr's Safety Data Sheets

Browse and search Buehler's product literature