Tensile Testing

Specimens, Fasteners, Tubing, Rebar, Welds & Castings

Tensile Testing of Metals is a destructive test process that provides information about the tensile strength, yield strength and ductility of the material. Laboratory Testing Inc., near Philadelphia, PA in the United States, performs the tensile test in accordance with industry standards and specifications, including ASTM tensile test methods. This process is also known as a tensile strength test or tension test.

fastener tensile testingTensile Test Capabilities

LTI offers tensile testing services for metal materials. A variety of equipment models are used to test specimens in all sizes, from small fasteners up to large tubing and bolts.

Our tensile testing lab has machines with load capacities from 8 oz. to 600,000 lb. Elevated temperature tensile testing is also offered to 1800°F.

For fast turnaround, all types of tensile test specimens are prepared to specification in our own Machine Shop. Specimens are also available to customers for direct purchase.

A certified tensile test lab report is provided with each order and includes complete test results.

Range of Tensile Testing Capabilities

Tensile test to 600,000 lbs.Wedge & axial tensile
Full-size yield strength of fasteners
Testing of machined specimens
Full-size tubing
Full-size rebar
Elevated temperature tensile testing
Tensile testing of welds and castings

Test Methods/Specifications

  • ASTM A370
  • ASTM B557
  • ASTM D638
  • ASTM E8
  • ASTM E21
  • EN 2002-1
  • EN 10002-1
  • ISO 527-1
  • ISO 6892-1

Fastener Testing

  • ASTM A962
  • ASTM F606
  • ASTM F835
  • ISO 898-1
  • ISO 898-2
  • NASM-1312-8 (Formerly MIL-STD-1312-8)
  • SAE J429
  • SAE J995

Tell us your specifications for tensile testing and we will provide a fast quote.

The Tensile Test Process

Material strength testing, using the tensile or tension test method, involves applying an ever-increasing load to a test sample up to the point of failure. The process creates a stress/strain curve showing how the material reacts throughout the tensile test. The data generated during tensile testing is used to determine mechanical properties of materials and provides the following quantitative measurements:

  • Tensile strength, also known as Ultimate Tensile Strength (UTS), is the maximum tensile stress carried by the specimen, defined as the maximum load divided by the original cross-sectional area of the test sample.
  • Yield strength is the stress at which time permanent (plastic) deformation or yielding is observed to begin.
  • Ductility measurements are typically elongation, defined as the strain at, or after, the point of fracture, and reduction of area after the fracture of the test sample.

The test sample is securely held by top and bottom grips attached to the tensile or universal testing machine. During the tension test, the grips are moved apart at a constant rate to pull and stretch the specimen. The force on the specimen and its displacement is continuously monitored and plotted on a stress-strain curve until failure.

The measurements, tensile strength, yield strength and ductility, are calculated by the technician after the tensile test specimen has broken. The test specimen is put back together to measure the final length, then this measurement is compared to the pre-test or original length to obtain elongation. The original cross section measurement is also compared to the final cross section to obtain reduction in area.

elevated_temperature_tensile_testElevated Temperature Tensile Testing is a proven method of evaluating the behavior of materials under a combination of heat and tension. When performing an elevated temperature tensile test, the specimen is placed inside a furnace on our test carousel, which is capable of processing up to three specimens at a time. Our computer-controlled system heats the specimen to the required temperature, then allows it to soak. Next, the specimen is loaded into the test frame, where an extensometer in the latest design measures the strain on the specimen as the load is increased.
Watch how the test is performed.

Summary of Capabilities

  • Types of Tensile Testing – full-size tubing, rebar, fasteners; wedge & axial; yield strength; elevated temperature; weld and casting
  • Tensile Profile – tensile strength test, yield strength, ductility and elongation
  • Equipment Capacity – from 8 oz. to 600,000 lb. load
  • Materials Tested – metals
  • Specimen Preparation – round and flat tensile specimens prepared by LTI’s Machine Shop

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Customer Testimonials

“I am finally getting around to reading all the information you sent and I just wanted to say thank you. So far the service, quality of the reports and delivery that your team has provided has been nothing short of spectacular! Please let your staff know that it does not go unnoticed! We look forward to more business with you!”

Tina Dutcher
Quality Manager


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