Services

Hardness Tester Calibration in the Greater Philadelphia Area

A hardness tester calibration ensures machines provide reliable results.

Hardness testing uses various methods to determine a material’s susceptibility to localized plastic (non-reversible) deformation. While most hardness testing relies on indentation mechanisms, determining hardness from surface abrasion is also possible. Hardness may reflect complex microstructure interactions, but testing methods are relatively straightforward compared to the physics at play. Regular hardness tester calibration must be a part of any lab where material selection and manufacturing processes require reliable, accurate measurements.

LTI Metrology Capabilities

Rockwell scales C, B, A, and E
Superficial Rockwell to 15, 30, 45 N&T Scales
Vickers & Knoop
Brinell
Micro-hardness testers
Leeb testers
Durometer testers
Analog manual and digital load cell types
Portable testers

diamond head pin and adjustment move up down table of hardness tester machine for inspection property hardness value of specimen sample material or product

LTI Technician performing a hardness test.

The Hardness Tester Calibration Process

Hardness tester calibration is a periodic service to verify that an instrument’s accuracy is within the manufacturer’s stated tolerances for the grade or model. As a hardness tester repeatedly measures the relative resistance of materials to denting, bending, or scratching, it can become misaligned. Calibration and adjustment restore measurement reliability. LTI Metrology offers a complete package of services for your hardness testing equipment.

Before hardness tester calibration, the machine is leveled and inspected for chips, breaks, or cracks. The calibration process involves verifying the condition of the anvil and indenter, then running five hardness tests on three certified hardness test blocks, representing the high, middle, and low ranges on all scales under verification. If the instrument reads within the tolerances of the test blocks, the machine is deemed certifiable. Otherwise, adjustments can correct the machine’s accuracy. This verification method considers and combines all variables that produce the actual hardness number, just as during testing.

Full-Service Calibration for Hardness Testers

Our A2LA-accredited laboratory is qualified and equipped to calibrate most models of hardness testers, including micro-hardness, Vickers, Knoop, and Rockwell, per the applicable ASTM Standard. Our expert technicians at LTI Metrology will determine the accuracy of the tester during calibration and will make necessary adjustments to bring the tester within the manufacturers’ tolerances. Preventative maintenance and repair services are available during calibration; LTI can also purchase new indenters, blocks, and hardness testers for you from our suppliers. Following calibration, you will receive a Certificate of Calibration certifying that results are traceable to NIST and providing all the information you need about the instrument and services performed.

Rockwell hardness tester. Machine Building Plant.

LTI Makes Hardness Testing Easy

Hardness tester calibration allows for rapid analysis of materials. Regardless of the hardness method used during evaluation, lab testers will want the peace of mind that their machines can deliver repeatable and reliable results. Whether at our state-of-the-art facility or on-site, LTI Metrology is a premier lab test instrument calibrator driven by industry experts who bring their passion for knowledge and excellence to every job. For all material testing services, manufacturers can count on LTI.

I had an urgent request today for hardness testing to be performed by an independent lab to support our own testing for our customer and the end user. Your team was very accommodating as we received the results prior to a critical meeting. I greatly appreciate LTI’s efforts for the rapid turnaround!

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Laboratory Testing Inc. has the capacity and capabilities to handle all your material testing needs in a single location. Since 1984, we’ve aided customers worldwide with accurate nondestructive testing and precise material lab services. Request a quote or contact us today to see how our industry-leading turnaround times can keep your mission-critical approvals moving forward.

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