Calibration Services Companies banner

Hardness Test

A reliable source for Calibrating Services information and leading Calibration Services Companies

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. Read More…

Hardness Test 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.
Request for Quote

Leading Manufacturers

North Haven, CT  |  203-484-3707

Custom Calibration Inc. 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.

Request A Quote

Custom Calibration Inc. $$$

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.

Request A Quote

Calibration Laboratory, LLC $$$

York, PA  |  717-843-0081

Morehouse is an experienced leader in force and torque measurement helping to create a safer world. We use our knowledge to provide solutions including accurate measurement data and data analysis software. The goal is to help customers make better measurements which can make the difference between success or failure of everyday technology. We offer ISO/IEC 17025 accredited calibrations accurate to 0.002 percent of applied force up to 120,000 lbf and 0.01 percent up to 2,250,000 lbf.

Request A Quote

Morehouse Instrument Company, Inc. $$$

West Conshohocken, PA  |  610-825-3310

For over 40 years, Strainsert Company has been an industry leader in manufacturing calibration services. Our goal is to provide calibrating services that are thorough and accurate, and we have experience serving a variety of applications.

Request A Quote

Strainsert Company $$$

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!

Request A Quote

Sierra Instruments $$$

Frederick, MD  |  410-857-1880

ETI is a leader in the calibration of critical test and measurement equipment. Our NIST-traceable calibration services encompass a wide variety of electrical, mechanical, radio frequency (RF), pressure, physical-dimensional, and environmental instrumentation. As a long-term manufacturer of circuit breaker testers, we also have specialized knowledge, tools, and expertise calibrating high-current ammeters that can’t be found at other calibration laboratories.

Request A Quote

ETI Precision $$$

Minneapolis, MN  |  800-328-1235

Process Measurement Company is an ISO/IEC 17025:2005 accredited calibration lab, offering instrument calibration services and equipment calibration to a wide variety of industries. Our calibration company is headquartered in Minneapolis with offices in Denver, Kansas City and Omaha.

Request A Quote

Process Measurement Company $$$

York, PA  |  717-266-5775

Micron Inspection & Calibration Services, Inc. is a full-service calibration and inspection laboratory, established in November 1997, faithfully serving South Central PA and businesses throughout the nation. We are a woman-owned & minority-owned business. Our staff is comprised of expertly trained personnel with military, engineering, quality assurance and inspection backgrounds.

Request A Quote

Micron Inspection & Calibration Services $$$
placeholder image Custom Calibration Inc. Calibration Laboratory, LLC Morehouse Instrument Company, Inc. Strainsert Company Sierra Instruments ETI Precision Process Measurement Company Micron Inspection & Calibration Services

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 basis for the comparison of materials, heat treatment, quality control and more. This is necessary knowledge for industrial and manufacturing companies to determine materials and specifications for parts and products.

Hardness Test Hardness Test - Inspec, Inc.

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 displayed as a Rockwell hardness number.

Another widely used method is the Brinell test. It 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 macroindentation 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.