MTEC Mechanical Testing Services, an independent Metallurgical testing facility, offering expertise in all phases of Mechanical Testing and Metallography.  The company was founded and incorporated under the laws of Texas in 1984.

Materials Evaluation Testing

• Tension, both room and elevated temperature.
• Stress Rupture.
• Creep and Creep Rupture.
• Impact Testing to -320° F.
• Fatigue Testing.

Test conditions can be applied to standard specimens within the capacity of the test equipment. Mechanical or electronic extensometry and related instrumentation are used as appropriate.

MTEC is operating 6 creep rupture, one universal, two servo hydraulic, and one impact testing machine.

Weld Procedure Evaluation Testing

Fracture Mechanics Services

Fracture toughness has become a segment of the materials testing done at MTEC.  Collectively, a test laboratory and machine shop provide a complete facility for specimen manufacture, precracking and testing over a range of loading conditions and temperatures.  Typical activities include:

• Fracture toughness test (Compact Tension) per ASTM E399.
• CTOD, a measure of fracture toughness (Compact Tension) per ASTM E813.

Metallography

MTEC has the facilities to provide full metallographic services.  Reproducibility is achieved with automatic polishing systems.  This automated system will provide large quantity sample output combined with quality surface preparation.  Metallographic services include:

• Sample preparation of all metals, alloys coatings and electronic components.
  Macro and micro etching of these materials as well.
• Photomicrographs.
• Failure Analysis.
• Microhardness testing.
• Microcleanliness and Grain size determinations.
• Ferrite Point Count with photos.

Specimen Manufacture

MTEC operates complete facilities especially planned for the manufacture of test specimens.  The shop equipment is set up specifically for the production of test specimens of both standard and specialized configurations.  Low stress grinding and other controls are employed in manufacture to ensure a high degree of uniformity.

Data Acquisition/Certifications

A fully integrated system for order entry, shop work order generation, testing data acquisition and certification of test results has been developed and implemented at MTEC to provide quick and dependable service to our customers.

Quality Assurance

MTEC is committed to serving its customers by conforming to specified requirements, expeditiously and accurately.  We accomplish our commitment through strict adherence to our Quality Manual and supporting procedures.  Our personnel is continuously trained and dedicated to quality performance.  Test specimens are manufactured and inspected for conformance to the applicable drawings and specifications.  Testing equipment inspection tools are calibrated and traceable to the National Institute of Standards & Technology.  We verify our own performance through audits and management review.  Our records, including graphics, are stored on computer and backed-up daily, making them retrievable for our customers.  We are committed to grow our business through customer satisfaction.

Machining Equipment

Sheffield Model 110 Multiform Grinder

The model 110 grinder is a versatile, high speed production machine designed for grinding cylindrical parts of intricate and precise profile.  Feed and control functions are performed automatically permitting the operator to manage more than one machine at a time.  The principle uses of this grinder are:

• 0.250 Rt, 0.250 elevated temperature and 0.350 diameter tensiles.
• Combination and smooth stress ruptures.
• NACE stress corrosion.
• Gleebles and slow strain rate test specimens.
• Fatigue tests with gauge length up to 1.00".

Two Sheffield Model 187 Multiform Grinders

In addition to the above mentioned benefits, the model 187 is used to grind:

• 0.500 diameter room temperature and elevated temperature tensiles.
• Fatigue tests with gauge length up to 2.00".

Jones and Lamson Model 410 Thread and Form Grinder

This equipment is used to:

• Notch cylindrical specimens to final dimension.
• Thread grinding.

Two Charpy "V" Broad Machines

• Notch Charpy and Izod specimens.

Two Thompson Surface Grinders

For precision grinding of impact and fracture mechanics samples.

Two Engine Lathes

Lathes are used for general turning operations with specific uses presented below:

• Turning straight and step down magnetic particle test.
• Jominy hardenability.
• Fixtures for test machines.

Two Vertical Mills

• Vertical mill is used primarily for locating and drilling clevis pin holes at precise locations in compact tension and DCB samples.
• General light milling operations.

Horizontal Mill

Horizontal mill operations are:

• Milling crack starter notch in compact tension and DCB specimens.
• Reduced section tensiles.
• V and U notch in high temperature alloys and austentic stainless steel Charpys.

Testing Equipment

600,000 pound Tinius Olsen UTM.

50,000 pound MTS Closed Loop Electohydraulic Servosystems.

120,000 pound Baldwin UTM.

30,000 pound Computer controlled Servo Hydraulic Test Machine.

300 foot pound Satec Impact Machine with two FTS Coolers.

Six Arcweld Creep Rupture Machines.

One Rotating Beam 200 in./ lbs. Fatigue Machine.

One Sontag 10,000 pound Fatigue Machine.

Zwick Microhardness Tester.

Unitron Metallograph.

Automatic Polishing System.

Heat Treat Box Furnace

Draw Furnace