Machining Test Specimens

Tensile Specimen, Charpy Specimen & More

When you require test specimens for metal testing, be sure you are getting the quality and turnaround you need. Test specimen machining at Laboratory Testing Inc. is a fast, extremely accurate production process, so let our machinists do the work.

The Machine Shop prepares all test specimens according to ASTM standards (including ASTM A370, ASTM E8, ASTM E23) and other industry specifications, such as AWS, ISO, EN, DIN, JIS and NACE. All specimen machining is NADCAP accredited.

The latest waterjet equipment for cutting and CNC centers for milling, turning and grinding, including low-stress grinding, allows us to prepare the highest quality test specimens quickly and economically, including:

  • Mechanical Test specimens such as tensile, charpy and izod impact
  • Corrosion specimens
  • Weld qualification specimens
  • Fracture Toughness and Fatigue
  • Metallography samples

LTI is a NIST Qualified Manufacturer for Charpy V-Notch Impact verification test specimens.

Traceability is maintained from receipt inspection through machining, certification and return shipping. All specimens receive a dimensional inspection after machining is complete to verify that measurements are accurate to the appropriate specification.

Test SpecimensMachining of test specimens is a time-saving convenience for our customers that require a specimen for destructive testing. Our machining capabilities allow the complete order to be processed right at LTI, from receipt of the sample to preparation of the Certified Test Report. Laboratory Testing also provides test specimens to companies that perform their own in-house testing.

Contact us to order test specimens alone or to have LTI perform your testing too.

Refer to our Sample Size Requirements under the Guidelines section on our Resources page when ordering testing services that require test specimens.

Test Specimens Summary

  • Specimen GrindingASTM Machining Standards – A370, E8, E23
  • Test Specimens Provided
    • Tensile Specimen – flat, round (threaded, unthreaded), elevated temperature
    • Impact Test Specimen – including Charpy V-notch and Izod Impact
    • Stress Rupture
    • Fracture Toughness – notched by EDM
    • Fatigue
    • Stress Corrosion
    • Tension
    • Tear
    • Bend
    • Compression
    • Gleeble
    • Jominy
    • Hydrogen Embrittlement
  • NIST Qualified Manufacturer – Charpy V-notch Impact
  • Additional Services – Electrical discharge machining (EDM)

See More Specimen Machining Services

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  • Fast Certified Reports sent by email

Customer Testimonials

“Thanks for the prompt service on this request. Please extend our gratitude to all those on your testing team who got the work done for us. We really needed this information today, and we are deeply indebted to LTI for making it happen.”

Paul A. Blomquist
VP-Chief Technical Officer


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