AUTOX750
Automatic Contacting Extensometer
The need for companies to increase specimen throughput — while maintaining high quality standards and safe operating conditions — has created demand for greater speed, reliability, and accuracy in material testing routines. The AutoX750 is an automated long-travel extensometer built to meet that demand with sub-micron precision. With automated gauge length positioning and attachment to the test specimen, operators get a safer, simpler test routine — and companies get faster cycle times while eliminating the variability that comes with manual, time-consuming steps of traditional clip-on extensometers.
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Please complete the form below and we will be happy to contact you with a response. Our typical response time for an online request is within 1-2 business days. For a faster response, please call +1-800-473-7838.
Principle of Operation
The AutoX750 integrates with Instron's 3360, 3380, 3400, 5500, 5960, 5980, and 6800 Series electromechanical test systems, as well as LX, DX, HDX, and KPX static hydraulic testing systems, and is controlled with Bluehill® Universal testing software via USB interface. The software drives an easy-to-use test sequence and setup that facilitates the automated gauge length, reference arm position and opening and closing of the arms before and after testing.
The counterbalanced measuring arms are virtually weightless, thus removing any influence on the material properties under test. The measuring arms are motor driven and will automatically position themselves to the correct position and gauge length every time.
In Bluehill Universal, the AutoX750 provides:
- Real-time strain data streamed directly into the test method
- Automated modulus, offset yield, and elongation calculations
- Logged gauge length and arm position for full test traceability
Application Range
- Tensile testing: metals, composites, plastics, and elastomers
- Flexure testing: plastics
- Specimen shapes: strip, round, hexagonal, and flat
- Standard compliance: Conforms to the most rigorous testing standards, including:
- ISO 527-2 and ASTM D638 (plastics)
- ISO 6892-1 (Strain Control Method A1) and ASTM E8 (Strain Control Method B) (metals)
- ASTM D3039 (tensile testing of polymer matrix composite laminates)
- High Travel - With high accuracy and resolution across 750 mm of travel, the AutoX750 suits a wide range of specimen sizes and gauge lengths.
- Counterbalance Technology - Proven counterbalanced technology eliminates external influences on the material under test, producing highly repeatable and reliable measurements.
- Automated Test Arms - Built for simplified, safer test routines, reduced cycle time, and high reproducibility. The automated arms attach to the specimen and can remain attached through failure for most materials.
- Interchangeable Knife Edges - Swappable knife edges and adjustable clamping forces accommodate a variety of materials and specimen geometries.
Endless Applications
The AutoX750's accuracy and travel make it suited to nearly any material — metals, plastics, and composites alike. Use it to determine modulus, offset yield, non-proportional plastic elongation to failure, and r- and n-values for sheet metals.
Resources
Not Sure If You Need Biaxial Strain? Meet the AutoXBiax
AutoXBiax — Axial and Transverse Strain Measurement
Catalog No. 2665-751
The AutoXBiax is an automated, high-precision measurement device that captures axial and transverse strain simultaneously. Built on the same high-accuracy optical measurement system as the AutoX750, it's purpose-designed to measure plastic strain ratio (r-value) for steel — exceeding current standards including ISO 10113, ASTM E517, and JIS Z 2254.
The AutoXBiax is compatible with the 3382A, 5960, 5980, and 6800 Series systems.
AutoX750 vs. AutoXBiax — Which Do I Need?
| AutoX750 | AutoXBiax | |
| Strain Measured: | Axial only | Axial and transverse (simultaneously) |
| Best For: | General tensile/flexure testing across metals, plastics, composites, elastomers | r-value determination for sheet steel |
| Key Standards: | ISO 527-2, ASTM D638, ISO 6892-1, ASTM E8, ASTM D3039 | ISO 10113, ASTM E517, JIS Z 2254 |
| Compatible Frames: | 3360, 3380, 3400, 5500, 5960, 5980, 6800 Series; LX, DX, HDX, KPX | 3382A, 5960, 5980, 6800 Series |
If your test standard calls for an r-value or you need transverse strain alongside axial, the AutoXBiax is the fit. For general-purpose tensile and flexure work, the AutoX750 covers the broader range of materials and frame compatibility.
Talk to an Instron Expert.
Not sure whether the AutoX750 or AutoXBiax fits your application, or need help matching gauge length, knife edges, and frame compatibility to your test standard? Tell us about your specimens and testing requirements and we will help you find the right solution.
Contact Our Sales Department.
Please complete the form below and we will be happy to contact you with a response. Our typical response time for an online request is within 1-2 business days. For a faster response, please call +1-800-473-7838.