TEC Materials Testing Division

Materials Testing Division

Services

In TEC's Materials Testing Laboratory, special instrumentation is dedicated to improving your products through process and quality control. By managing residual stresses during the manufacturing process, you and your customers can prevent failures caused by phenomena such as fatigue, stress corrosion cracking and retained austenite.

Applications

Residual stress and retained austenite measurements have been performed by TEC for a wide variety of procedures, parts, and materials. The following tables list many examples.


*Procedures*
Cold Working	Grinding	Heat Treating	Machining
Rolling	Shot Peening	Welding
*Parts*
Drills	Fasteners	Pipes & Structures	Springs
Test Coupons	Tools & Dies	Wheels	Engine Components
Biomedical Components	Electric Motor Components	Engine Transmission	Armaments & Missiles
Pumps
*Materials*
Alloy Steels	Alpha Iron	Alumina	Aluminum Alloys
Brass	Carbon Steels	Case Iron	Chromium
Cobalt Alloys	Copper	Nickel	Nickel Alloys
Silicon Carbide	Silicon Nitride	Tin	Titanium Alloys
Tungsten Carbide	Uranium Alloys	Zirconium Alloys
Austenitic Stainless Steels	Ferritic Stainless Steels	Martensitic Stainless Steels

Residual Stress Determination

TEC's residual stress measurement capabilities are well known and widely used by a variety of industries and applications. Some of these industries are aerospace, automotive, railroad and defense. Other applications include research and development, manufacturing and testing laboratories.

Techniques

To meet these diverse requirements, TEC has developed expertise in the following techniques and procedures:

Sin�Psi Technique
Double-Exposure Technique
Electro-polishing
Stress Constant Determination
Full Correction for Depth Profiling
Strain Gaging and Sectioning

Over the years, TEC has developed superior techniques for measurement of retained austenite content in steel components. These measurements are calibrated to NIST standards. The services team performs retained austenite measurements in the laboratory environment or in the field, using two austenite and two martensite peaks. The four peak method is recommended by ASTM and SAE for obtaining accurate results.

Minimal Sectioning

Other laboratories often require large or irregularly shaped components to be sectioned before measurements can be performed. TEC uses its own TEC 4000 X-Ray Diffraction System with portable diffractometers that operate up to 25 feet away from the unit. Because of this portability, our lab personnel can perform measurements on complex parts ranging in size from the width of a straight pin to the length of an airplane wing.

Accredited Service

When you use TEC's accredited laboratory, you can be sure that you will receive superior analysis and technical support. We meet today's strictest quality standards by meeting A2LA (ISO/IEC Guide 25) and ISO-9001 requirements. Scheduled turnaround of analysis results is always rapid; however our materials testing group can also adapt to meet critical deadlines when you need immediate results.

Dependable Service, Dependable Results

Using TEC's laboratory, you are sure of getting services of the highest quality. Delivery of scheduled work is always fast and prices are always competitive. When you need immediate, accurate results, our laboratory can adapt to help you meet those unanticipated deadlines.

Other suppliers only make measurements in their laboratories. TEC is able to perform the measurements you need, either in the labortaory in Knoxville or at your site. At either location, we guarantee rapid, accurate results.

TEC Materials Testing Division--10737 Lexington Drive, Knoxville, TN USA 37932--865.966.5856

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