Machining Test Specimens

Tensile Specimen, Charpy Specimen & More

Milling Test SpecimensWhen test specimens are needed for mechanical, fracture mechanics or corrosion testing, let our machinists do the work. The LTI 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.

Laboratory Testing Inc. is a NIST Qualified Manufacturer for Charpy V-Notch Impact verification test specimens. All test specimen machining is NADCAP accredited.

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

  • Compact and Middle Tension
  • Round or flat tensile specimen
  • Impact test specimen
  • Many others for jominy, stress rupture, fracture toughness and more test methods

Traceability of sample material and test specimens is insured from receipt inspection through the final process in our laboratory machine shop.

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.

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

  • Waterjet machiningASTM 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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  • A2LA and NADCAP accreditations
  • ISO 17025 certification
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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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