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Hardness Test Services

IQS Directory provides an extensive list of hardness calibration services. Utilize our website to review and source hardness calibration services with our easy-to-use features which allow you to locate hardness calibration services that will provide hardness testing for your exact specifications. Our request for quote forms make it easy to connect with leading hardness calibration services. View company profiles, website links, locations, phone number, product videos, customer reviews, product specific news articles and other production information. We are a leading manufacturer directory who will connect you with the right service whether you are looking for mineral hardness test, rock hardness tests, or hardness tests calibrations.

  • North Haven, CT 203-484-3707

    Custom Calibration specializes in on-site and laboratory calibration which will keep costly equipment downtime to a minimum and maximize your overall productivity. We have over 30 years of experience providing calibration services for mechanical, dimensional, scale, torque, humidity, and many more applications. Our company’s mission is to achieve total customer satisfaction by providing prompt, precise, tailor-made calibration solutions to fit your specific needs.

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  • Merrillville, IN 800-373-1759

    ISO/IEC 17025:2017 & ANSI/NCSL Z540.3 Accredited Laboratory. Electronic, dimensional, physical and thermodynamic calibrations performed onsite and in our lab. Professional ASQ Certified Calibration Technicians. We support the manufacturing and service sectors including; aerospace, automotive, chemical, electronic equipment, energy, food, industrial, machinery, medical, metal, military, nuclear, pharmaceutical, plastics, and transportation. Free local pickup and delivery. In business since 1977.

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  • Monterey, CA 831-373-0200

    Sierra provides accurate calibration services for mass flow meters and controllers, insertion thermal flow meters, vortex, and ultrasonic flow meters. With more than 40 years of expertise in gas, air, or liquid flow calibration, you can count on our team to make sure your flow meter operates with efficiency and pinpoint accuracy. We believe in providing personalized and customized service, and doing everything we can to maintain credibility with our clients. To get started, contact Sierra today!

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  • Chelmsford, MA 800-325-2201

    Essco Calibration Laboratory provides calibration services for commercial test equipment. Our capabilities include electronic, fiber optic, mechanical, temperature, pressure, mass and torque instrumentation. ISO 17025:1999 accredited by A2LA.

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  • Scottsdale, AZ (602)437-0114

    National Calibration Inc. (NCI) is a regional calibration and repair service company covering the southwestern United States and expanding into adjacent western states. NCI is based in Phoenix, Arizona and has additional service locations in Durango, Colorado; Albuquerque, New Mexico; Las Vegas, Nevada; Salt Lake City, Utah and San Antonio, Texas.

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Hardness Test Industry Information

Hardness Tests

A hardness test is performed to determine the hardness of a material by examining how well it resists deformation. This information is beneficial because indentation hardness correlates linearly with tensile strength, which is a material’s resistance to the force that tears it apart.

Quick links to Hardness Tests Information

Applications of Hardness Tests

Hardness tests are also frequently called indentation tests. During these tests, a tool is used to force an impression on the surface of the material; generally, one material is used to scratch another material or a series of materials. These tests are mostly done on metal or stone. The results are compared and examined. Sometimes bending, scratching, cutting, abrasions, or penetration is used to evaluate hardness as well. Hardness tests can be done manually by a worker using a sharp tool to gouge at the material's surface, or it can be performed by a machine. Hardness cannot be automatically determined by calculating the fundamental units of mass, length, and time. Instead, a hardness value is the result of a certain procedure that provides accurate responses instead of estimations. The Mohs Scale ranks materials on their ability to resist scratching by another material, one of the most common, basic, and longest known techniques of taking a hardness test. The results of hardness tests are used as a basis for the comparison of materials, heat treatment, and quality control. This is necessary knowledge for industrial and manufacturing companies to determine materials and specifications for parts and products.

Methods of Conducting Hardness Tests

Hardness tests usually measure the depth or area of an indentation left by a tool of a specific shape with a certain force applied to it for a period of time. There are three main testing methods that use this basic procedure. One of the most common is the Rockwell hardness test, which uses a small steel ball for soft material or a diamond cone for harder surfaces. The depth of penetration is measured automatically by the machine and is displayed as a Rockwell hardness number. Another widely used method is the Brinell test. This method also uses a steel ball, which averages 10 millimeters in diameter. The Brinell hardness number (BHN) is closely related to the tensile strength of the material; this test, like the Rockwell, is simple, fast, and does not destroy the product being tested. The Vickers test can be a microhardness test; that is, the indentations made during the testing process are so small that a microscope is required to take a measurement. On the other hand, a macro indentation can be seen with the unaided eye. The Vickers hardness test uses a triangular shaped tool to impress a pyramidal shape into the material if the metal or stone surface will allow it. Like other calibration services, hardness testing provides data and numerical discrepancies between samples; however, unlike machine or speedometer calibration, the strength of the material cannot be quickly adjusted but rather must be reformulated or recreated.