Split insert tensile grips are designed for safe, high-volume production testing of threaded-end, shoulder-end, or button-end machined specimens. Engineered with an operator focus, the split insert style tensile grips are easy to install, offer quick change inserts for standard specimen sizes, and promote efficient static testing of a wide range of metals and alloys. A preferred solution for the testing of high-strength, high-toughness materials that may damage or cause excessive wear to traditional grip arrangements. These grips are designed to comply with ASTM E8, ASTM A370, or ASTM A48, and other international standards, and can be made to custom specifications. A wide range of possible button-end, shank hole, and chamfer / radius dimension options ensures compatibility with a large variety of specimen sizes.

Self-Aligning Tension Grip Body

Self-Aligning Tension Grips

The self-aligning tension grips are designed to perform static tensile tests on threaded-end test specimens to various international standards, including ASTM E8, ASTM A370, and ASTM A48. The grips are designed with a double alignment arrangement at each end, which forms a universal joint of movement. This ensures the specimens are loaded in uniaxial tension, and do not require any adjustment during use. A full range of interchangeable grip heads are available for use with specimens of different cross-sectional areas. A safety guard is provided for the shoulder specimen grips to prevent specimens being ejected from the grips where stored energy is released on specimen breakage.

Grip Specifications
Capacity 100 kN
Temperature Range -70°C to +350°C
Upper and Lower Fitting Type Dm (1.25 in connection with 0.5 in clevis pin)
Type of Loading Tensile static and tensile cyclic tests. Not suitable for high cycle fatigue tests.
Specimen Materials Steel, non-ferrous metals
Specimen Shapes Round specimens with threaded heads
Catalog Number 2717-029
Grip Heads
Description Catalog Number
M8 Threaded 2717-021
M10 Threaded 2717-022
M12 Threaded 2717-023
M18 Threaded 2717-024
M20 Threaded 2717-025
M24 Threaded 2717-026
Blank, for Threaded Specimens 2717-027
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Threaded-End Specimen Holders

Threaded-End Specimen Holders

The threaded-end specimen holders are designed to perform static tensile tests on threaded-end specimens to various standards, including ASTM E8 and ASTM A370. The specimen holder has threads on each end: one end threads into an adaptor (purchased separately) connecting it to the frame, and the other end having threads to hold the specimen. With a properly aligned crosshead, the threaded-end specimen holders ensure the specimens are loaded in uniaxial tension. Each set contains 2 threaded-end specimen holders. Capacity 267 kN. Temperature Rating: +5°C to +40°C

Description Upper Fitting Specimen Diameter Specimen Thread Size Catalog Number
ASTM Standard .505" 1.5 in-6fRH 12.8 mm (0.505 in) 0.75 in-10fRH W-5101
ASTM Standard .505"  M36x4fRH 12.8 mm (0.505 in) 0.75 in-10fRH W-5150
Non-Standard  Up to 38 mm (1.5 in) Up to 38 mm (1.5 in) Up to 38 mm (1.5 in) W-5102
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Shoulder-End and Button-End Specimens Holders and Inserts

The modular design offers a single set of holders and interchangeable split inserts that match industry standard dimensions for performing tensile testing on shoulder-end and button-end specimens. Each set of insert holders requires at least one set of inserts to perform a test.

Capacity Mounting Type Effective Length Catalog Number
300 kN Type R4 (M36 × 4p) 83 mm (3.3 in) W-5158-1
300 kN 1.5 - 6 in UNC 83 mm (3.3 in) W-5158-2
300 kN 1.5 - 12 in UNF 83 mm (3.3 in) W-5158-3
600 kN Type II RH
(M48 × 2p RH)
127 mm (5.0 in) W-5159
300 kN Inserts Specifications to ASTM E8, A370 (Requires W-5158 Holders)
Capacity Specimen Reduced Section Diameter Catalog Number
300 kN 12.83 mm (0.505 in) W-5158-A
200 kN 9.07 mm (0.357 in) W-5158-B
150 kN 6.40 mm (0.252 in) W-5158-C
50 kN 4.06 mm (0.160 in) W-5158-D
600 kN Inserts Specifications to ASTM A48 (Requires W-5159 Holders)
Capacity Specimen Reduced Section Diameter Catalog Number
600 kN 31.75 mm (1.25 in) W-5159-A3
500 kN 19.0 mm (0.75 in) W-5159-A2
400 kN 12.7 mm (0.50 in) W-5159-A1
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