Hardness Measurement of Welded Materials by Micro-Vickers Hardness Tester

User Benefits

- The stage viewer function provides an overall image of the sample and allows the stage to be moved to an arbitrary position. - Pattern setting enables all measurement positions to be set at once. - Continuous testing based on pattern settings and automatic indentation size acquisition is supported.

Introduction

Welding is a fundamental technology that supports the reliability of structures across various industries, including automotive, construction, and energy, and plays an essential role in ensuring the safety of critical infrastructure. In welded joints, differences in heat input and cooling conditions cause the metal microstructure to become non-uniform, resulting in changes in mechanical characteristics in the base metal, heat-affected area, and weld metal. Thus, hardness measurement is essential as an indicator of strength, toughness, and crack susceptibility. In this application, hardness testing of a welded material was performed using the HMV-G31-FA Micro-Vickers Hardness Tester, and the weld area was characterized using the hardness distribution map obtained from multi-point continuous measurements.

March 17, 2026 GMT