Portable hardness testing is used when a test object is too large to be examined in a testing lab. It is useful on-site, for example, for checking that the correct heat treatment has been carried out on welded items or that welded joints comply with the hardness limits specified in the norms or by respected industry bodies. Portable hardness testing techniques are quick and economical.

Hardness testing of metals is conducted so that one may correlate the results with another material property of interest, such as tensile strength or resistance to abrasion. Too soft, and a material may not be strong enough for its intended purpose. Too hard, and it may be brittle and subject to cracking.


Application Specific Standards

  • EN 12952-6, Water-tube boilers and auxiliary installations Inspection during construction; documentation and marking of pressure parts of the boiler
  • EN 12953-5, Shell boilers. Inspection during construction, documentation and marking of pressure parts of the boiler
  • EN 13480-5, Metallic industrial piping Inspection and testing
  • EN 13445-5, Unfired pressure vessels Inspection and testing
  • EN 12732, Gas infrastructure. Welding steel pipework. Functional requirements
  • EN 14015, Specification for the design and manufacture of site built, vertical, cylindrical, flat-bottomed, above ground, welded, steel tanks for the storage of liquids at ambient temperature and above
  • EN 1090-2, Execution of steel structures and aluminium structures Technical requirements for steel structures
  • EN 14197-2, Cryogenic vessels. Static non-vacuum insulated vessels Design, fabrication, inspection and testing
  • EN 13458-2, Cryogenic vessels. Static vacuum insulated vessels Design, fabrication, inspection and testing
  • EN-ISO 9606-1, Qualification testing of welders. Fusion welding Steels
  • EN-ISO 9606-2, Qualification test of welders. Fusion welding Aluminium and aluminium alloys
  • EN ISO 15614-1 Specification and qualification of welding procedures for metallic materials. Welding procedure test. Arc and gas welding of steels and arc welding of nickel and nickel alloys
  • EN-ISO 17635, Non-destructive testing of welds. General rules for metallic materials

Standards Specific to Portable Hardness Testing

  • EN ISO 6507-3, Metallic materials. Vickers hardness test. Calibration of reference blocks
  • EN ISO 9015-1, Destructive tests on welds in metallic materials. Hardness testing. Hardness test on arc welded joints
  • ASTM A1038 – 13, Standard Test Method for Portable Hardness Testing by the Ultrasonic Contact Impedance Method
  • ASTM A956 Standard Test Method for Leeb Hardness Testing of Steel Products
  • ASTM E140 — 12be1 Standard Hardness Conversion Tables for Metals Relationship Among Brinell Hardness, Vickers Hardness, Rockwell Hardness, Superficial Hardness, Knoop Hardness, Scleroscope Hardness, and Leeb Hardness
  • EN-ISO 16859-1, Metallic materials — Leeb hardness test — Part 1: Test method
  • EN-ISO 16859-2, Metallic materials — Leeb hardness test — Part 2: Verification and calibration of the testing devices
  • EN-ISO 16859-3, Metallic materials — Leeb hardness test — Part 3: Calibration of reference test blocks
  • EN-ISO 18265, Metallic materials — Conversion of hardness values
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