{"id":46,"date":"2026-04-07T00:43:32","date_gmt":"2026-04-06T16:43:32","guid":{"rendered":"https:\/\/demowebdev.xyz\/petro\/our-services\/ndt-services\/hardness-testing\/"},"modified":"2026-04-10T18:32:06","modified_gmt":"2026-04-10T10:32:06","slug":"hardness-testing","status":"publish","type":"page","link":"https:\/\/demowebdev.xyz\/petro\/hardness-testing\/","title":{"rendered":"Hardness Testing"},"content":{"rendered":"\n
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Home<\/a> \/ NDT Services<\/a> \/ Hardness Testing<\/div>\n\n \n
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<\/span>UT<\/span><\/div>
<\/span>RT<\/span><\/div>
<\/span>MPI<\/span><\/div>
<\/span>PT<\/span><\/div>
<\/span>VT<\/span><\/div>
<\/span>UTTG<\/span><\/div>
<\/span>PMI<\/span><\/div>
<\/span>HT<\/span><\/div>
<\/span>RI<\/span><\/div>\n <\/div>\n\n

Hardness Testing (HT)<\/h1>\n
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Portable hardness measurement for weld, HAZ and base material acceptance \u2014 Brinell, Vickers and Leeb methods.<\/p>\n <\/div>\n<\/div>\n\n\n\n

What is HT?<\/span>

Hardness Testing in O&G<\/h2>

Hardness Testing measures a material’s resistance to permanent indentation \u2014 providing an indication of strength, ductility and suitability for service. In O&G, hardness limits are specified in welding codes and material standards to prevent hydrogen-induced cracking (HIC) and stress corrosion cracking (SCC).<\/p>

PetroNDT performs portable hardness testing using Leeb (rebound), portable Vickers and Brinell methods \u2014 suitable for onsite inspection of welds and base materials.<\/p><\/div>

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How It Works<\/span>

Inspection Process<\/h2><\/div>
01<\/div>

Surface Preparation<\/h3>

Prepare test surface to required finish \u2014 typically 400 grit or better.<\/p><\/div>

02<\/div>

Calibration<\/h3>

Verify instrument calibration on certified reference block.<\/p><\/div>

03<\/div>

Testing<\/h3>

Apply hardness tester to test locations \u2014 weld, HAZ and base metal.<\/p><\/div>

04<\/div>

Conversion<\/h3>

Convert readings to required scale (HBW, HV, HRC) as per code requirement.<\/p><\/div>

05<\/div>

Report<\/h3>

Issue hardness survey report with all readings and accept\/reject status versus code limits.<\/p><\/div><\/div><\/div><\/section>\n\n

Applications<\/span>

Where It Is Used<\/h2><\/div>
  • \u25b8<\/span>Post-weld heat treatment (PWHT) verification<\/li>
  • \u25b8<\/span>Weld and HAZ hardness limits to NACE MR0175 for sour service<\/li>
  • \u25b8<\/span>Incoming material verification<\/li>
  • \u25b8<\/span>Bearing surface and shaft hardness checks<\/li>
  • \u25b8<\/span>Process plant piping system surveys<\/li>
  • \u25b8<\/span>Structural steel verification<\/li>
  • \u25b8<\/span>Weld procedure qualification hardness traverse<\/li>
  • \u25b8<\/span>In-service condition assessment<\/li><\/ul><\/div><\/section>\n\n
    Our Work<\/span>

    Inspection Gallery<\/h2><\/div>
    \"PetroNDT\"<\/div>
    \"PetroNDT\"<\/div>
    \"PetroNDT\"<\/div><\/div><\/div><\/section>\n\n

    <\/span>Frequently Asked Questions<\/h2>