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  • Compression Test Fixtures

Compression Test Fixtures

Choose from 100's of standard products as well as custom solutions. Our modular platform enables us to adjust designs for any application requirement. All of our compression fixtures will fit any brand of test machine through the use of an adapter.


Universal Compression Platens & Plates

These compression platens and plates satisfy 75% of tests.

Fixed Compression Platens Fixed Compression Platens | G23
Composites Compression Test Spherically Seated Platens | G223
Rectangular Compression Platens Rectangular Platens | G36
T Slotted Plates & Clamps T Slotted Plates & Clamps | G36T

Application Specific Compression Fixtures

For applications that are unique and cannot be tested with conventional compression fixtures.

ASTM C364 Compression Test GC364-1158
Composites
ASTM C364
ASTM C1424 Compression Test GC1424-838
Ceramics
ASTM C1424
Composties Compression Test GD3410-613
Composites
ASTM D3410
ASTM D3574 Compression Test GD3574-223
Flexible Foam
ASTM D3574
ASTM D3574 Compression Test GD3574-42
Seat Bolster
ASTM D3574
ASTM D3967 Compression Test GD3967-1376
Rock
ASTM D3967
ASTM D6641 Compression Test GD6641-705
Composites
ASTM D6641
ASTM D695 Compression Test GD695-813
Rigid Plastics
ASTM D695 Fig. 2
ASTM D695 Compression Test GD695-793
Composites
ASTM D695 Fig. 4
Catalyst Particles Compression Test GD7084-1397
Catalyst Particles
ASTM D7084
ASTM D7137 Compression Test GD7137-818
Composites
ASTM D7137
ASTM D905 Compression Test GD905-17
Wood Adhesive
ASTM D905
Puncture Compression Test GF1306-525
Film Puncture
ASTM F1306
Composites Compression Test GF2378-1510
Gaskets
ASTM F2378
Heated Platen Compression Test G4220
Heated Platen
to 650°C (1200°F)
Porous metals compression test fixtures GISO13314-23
Porous Metals
ISO 13314
ISO 13503 Sand Proppant Compression Test GISO13503-947
Sand Proppant
ISO 13503
Medical Syringe Compression Test GISO7886-727
Medical Syringe
ISO 7886
Noodle Press Compression Test G773
Ottawa
Noodle Press



And more!

Contact us for more fixture options

Need help? There are so many compression fixtures to choose from it can be overwhelming and you certainly don’t want to make the mistake of selecting the wrong one. Give us a call today to speak to one of our experienced engineers that will work with you to find the exact solution based on your test requirements.

Fits Any Brand Test Machine

Our grips and fixtures will fit any brand of test machine. We offer adapters that allow the grips and fixtures to be used on test machines from TestResources, Instron®, MTS®, Tinius Olsen® and every other brand of machine.

Which Compression Platen is Right for You?

There are two types of compression test fixtures. The most common or most universal test fixtures are known as compression plates or platens. These are referred to in many standardized industry test methods. The second type are designed for a single purpose such as for a specific industry standard test method (e.g. ASTM D695).

Featuring a variety of diameters and plate sizes, the G23, G223 and G36 compression platens fill a wide range of testing needs. The steel versions are produced with a high Rockwell Scale hardness to minimize deformations under high loads. Inscribed concentric circles make it easy to center the specimen, which improves test result validity. The high tolerance of surface flatness produces a level seating surface with even load distribution.

Universal Compression Platens

Compression platens are used for a wide range of materials including wood, plastic, flexible or rigid foam, metal and metallic alloys, composites, packaging, and ceramics. Sample shapes include square, cylindrical cubes, and components. Both platens and plates are precisely machined test fixtures that evenly distribute the compressive load during a test. They are useful for static compression and compression-compression cyclic tests. 

They enable tests to be performed including compression modulus, compression strength, and compression yield strength. Platens are easy to install and come in several forms. 

Compression Platen and Plates Features:

        • Multiple diameter sizes are available in aluminum and steel 
        • Multiple test machine adapters are available to match your existing test machine coupler. 
        • Their load capacities are based on the machine adapter size. 
        • Conforms to ISO, ASTM, DIN and many other standards
        • Etched with concentric rings for accurate specimen placement 
        • Provisions for attachment of optional displacement transducers 
        • Rugged design features minimal maintenance 

Our platens are designed to center on the loading axis of universal compression test machines. Spherical seats are integral to the compression platen, and are available in a range of diameters. 

Designed to mount directly to the crosshead and/or load frame base, our compression platens and plates are available with multiple sizes and types of test machine adapters, making them compatible with your needs. We even stock adapters for use on Instron load frames.

Fixed Platens

Our compression fixtures make it easy to perform compression tests. Fixed Platens are rigidly fixed, stiff and resistant to off center loads. That way, parallelism is ensured during specimen failure. Standard options include platens where the edge of the platen can attach to optional displacement transducers, allowing measurements of direct displacement between two (equal sized) platens during a compression test.

Learn more about fixed platens →  

Spherically Seated Platens

Spherical seat platens are for applications that require platen self-alignment. These platens ensure that loading is concentrically and evenly applied to specimens that do not stand perpendicular to the platen surface. They are commonly used when test samples are cut in a non parallel manner between the sample top surface and it’s bottom surface. Once arranged, the user can fix the spherical setup by tightening four bolts. It’s simple.

The G223 spherically seated compression platens have a standard and a large angle version that accommodates angular displacement up to +/- 15 degrees of the top of the specimen with reference to the machine’s loading axis. These spherical seated compression platens are typically mounted to your test machine crosshead and normally used with a fixed version (also known as plane version) compression platen that is mounted to the base of the machine. 

Learn more about spherically seated platens →  

Rectangular Platens

Rectangular platens are commonly used for compression tests of plastic pipe, metal, plastic components, tile and box crushing tests. They are available with adapters in almost any size or load rating. 

Learn more about rectangular platens →  

Additional Compression Options

We can also make high temperature [e.g. 550°C (1022°F)] platens, and have materials that are extremely wear resistant, or corrosion resistant. Our standard steel platens and plates are nickel plated and rated for use at temperatures from -70°C to +350°C (-94°F to +662°F).

G36T T Slotted Plates

T-slot tables and component test plates are used with universal testing machines to mount or clamp components, finished products, and structures for tensile, compression, flexural, peel, and puncture testing applications. They provide an extended work area and a convenient way to secure your test samples in your test machine.

T-slot tables are mounted directly to the base of the machine. The slots run front-to-back, side-to-side, and diagonally. Components and structures can be secured in position using the various clamping tools. G36T slot tables allow you to secure components that can't be held with tensile grips to a universal testing machine. T-slot nuts are slid into the inverted T-slot of the table. Bolts, studs, or threaded rods are threaded into the nuts. 

T-slot tables can be used to repeat-position specimens in the same location for batch testing of components. Guides, slides, and stops can be bolted into position to allow placement of the specimens for every test. 

Common applications include components used in automotive, electronics, biomedical, and consumer products test labs. 

Learn more about T slotted plates →  


Choose Your Compression Grips & Fixtures by Test Standard

Still not sure which fixture is right for you? Use the table below to help you decide what compression fixtures you need by standard. The list below is organized by common industry standards and the associated test fixtures required by each standard. Start by learning more about the standard or learn more about the fixtures.

StandardFixtureApplication
ASTM C364 GC364-1158 Composites
ASTM C1424 GC1424-838 Ceramics
ASTM D3410 GD3410-613 Composites
ASTM D3574 GD3574-223 Flexible Foam
ASTM D3574 GD3574-42 Seat Bolster
ASTM D3967 GD3967-1376 Rock
ASTM D6641 GD6641-705 Composites
ASTM D695 - Fig 2 GD695-813 Rigid Plastics
ASTM D695 - Fig 4 GD695-793 Composites
ASTM D7084 GD7084-1397 Catalyst Particles
ASTM D7137 GD7137-818 Composites
ASTM D905 GD905-17 Wood Adhesives
ASTM F1306 GF1306-525 Film Puncture
ASTM F2378 GF2378-1510 Gaskets
Heated Platens G4220 up to 650C(1200F)
ISO 13314 GISO13314-23 Porous Metals
ISO 13503 GISO13503-947 Sand Proppant
ISO 7886 GISO7886-727 Medical Syringe
Ottawa G773 Noodle Press

If you need a fixture for a test that is not listed, please contact us for pricing information. In some cases, a universal grip or fixture can perform multiple tests and sample types.

Our experienced engineers will work with you to ensure your test system is configured to meet your specific application requirements. Contact us for help.

Standard, Semi-Custom and Application Engineered Compression Solutions

We offer 100's of standard products as well as custom solutions. Standard compression platens and plates satisfy 75% of tests, however, our modular platform enables us to adjust designs for any application requirement. We understand that every application can be unique. With this in mind, we offer custom engineered fixtures to match your specimen with any test force. Through the use of some of our standard elements, we can configure a wide variety of unique solutions without paying a “custom price” or waiting months to receive your order. Our modular platform approach satisfies virtually any application requirement.

Contact us to request a custom quote

Guaranteed to Fit Any Brand Test Machine

Our Accessories are Compatible with All Test Machine Brands (Instron®, MTS®, Tinius Olsen®, etc...)

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