Machining Test Specimens

Tensile Specimen, Charpy Specimen & More

When 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, including low-stress 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
  • Fracture Toughness and Fatigue
  • Jominy, Stress Rupture  and many others

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

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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“I would like to thank all the LTI people who have consistently come through for me with prompt and dependable results when I send samples for chemistry checks.”

Pete Smith
Coordinator – Chemistry Lab

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