Microhardness Testing

Applied Technical Services’ materials testing department provides microhardness testing. This test is also commonly known as microindentation hardness testing. This procedure tests the hardness of materials using lower applied loads than ones employed in other hardness test methods. During this test, a sample, normally very small or thin in size, is impressed with a diamond indenter using a known applied force. The resulting values determine a material’s hardness or resistance against penetration. Microhardness Testing provides accurate and detailed information about the properties of a surface hardened component and the heat-affected zone of welds. ATS is very familiar with both the Knoop and Vickers methods, however the Vickers Hardness Test is used extensively in weld qualification testing. A Vickers Hardness Test determines the resistance of a material to deformation by using a relatively simple but accurate procedure.

The Microhardness Test can measure surface to core hardness on:
  • Carburized Parts
  • Case-hardened parts
  • Parts with suspect grinding burns, in addition to
  • HAZ of Welds
ATS Performs Test to Specific Standards

Applied Technical Services has been providing testing services for over 50 years. We test to either published industry codes or specific customer guidelines. Our labs are ISO 17025 (A2LA) accredited and able to perform hardness testing methods in accordance to standards such as the ones listed below.

Test Methods and Specifications:
  • AMS 4081
  • AMS 4083
  • ASME Sect. IX
  • ASTM B578
  • ASTM E1077
  • ASTM E384
  • MIL Specifications
  • ATSM A956
  • ASTM E18
  • ASTM A833
  • ASTM 10
  • ASTM A370
  • ASTM E92
  • EN 1043-1
  • EN 1043-2
  • ISO 6506-1
  • ISO 6507-2
Our Labs Provide Quality Work

Applied Technical Services has an ISO 9001 registered Quality System that certifies our commitment to providing high quality testing services. This system is the foundation of our quality policy and its continuous improvement through measurable objectives. Each one of our employees is involved in the process of our continuous quality improvement.

We Meet Customer Needs by Providing:
  • Clear and accurate data
  • Professional services delivered in a timely manner
  • Qualified, equipped and engaged employees
  • Services in accordance with applicable standards and specifications
ATS Complies with Following Quality Standards:
  • ANSI/NCSL Z540-1 — General Requirements for Calibrations Laboratories and Measuring and Testing Equipment
  • ASME NQA-1 — Quality Assurance Requirements for Nuclear Facility Applications
  • ISO/IEC 17025 — General Requirements for Competence of Testing and Calibrations Laboratories
  • 10 CFR 50 Appendix B — Quality Assurance Criteria for Nuclear Power Plants and Fuel Reprocessing Plants
  • 10 CFR Part 21 — Reporting of Defects and Noncompliance
  • ISO 9001:2015 — Requirements for Quality Management Systems

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