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NDT Equipment and Accesories
Measuring and Testing Instruments


Couplants and Adaptors

Test Blocks

Calibration and/or reference blocks should be used in every application. Standard blocks are available for angle beam calibrations and thickness calibrations of common materials.
• Blocks manufactured from 1018 steel, 304 stainless steel, or 7075-T6 aluminum are commonly in stock (other materials require special quotes for price and delivery).
• Contact us for more information regarding materials not listed, blocks not listed, or custom blocks.

Calibration Blocks

All blocks are checked dimensionally using measuring equipment traceable to the National Institute of Standards and Technology, NIST. The most commonly required calibration blocks are listed below.

 

Type Part Number Description Hardwood
Case
ASTM E164
Calibration
IIW-Type Block
TB7541-X Meets AASHTO and AWS Type 1 block requirements. Calibrates distance and sensitivity settings.
Measure refracted angle and sound exit point of angle beam transducers.
U.S. customary units (inches).
F129
TB1136-X Meets AASHTO and AWS Type 1 block requirements. Calibrates distance and sensitivity settings.
Measure refracted angle and sound exit point of angle beam transducers.
U.S. customary units (inches). Block with Lucite plug.
F129
TB1054-X Metric units. F129
TB1137-X Metric units. Block with Lucite plug. F129
US Air Force
IIW-2 Calibration
Block
TB5939-X IIW-type block per U.S. Air Force NDI Manual T.O. 33B -1-1. Includes 2 in. and 4 in. radius cutouts for distance calibration. No. 3, No. 5, and No. 8 side drilled holes, and distance calibration marks to the 2" hole. F129
RC AWS Block TB7543-X Determining resolution capabilities of angle beam transducers per AWS and AASHTO requirements. F157
SC AWS Block TB7545-X Sensitivity and refracted angle calibration per AWS and AASHTO requirements. F158
DC AWS Block TB7547-X Distance and beam index calibration for angle beam transducers per AWS and AASHTO requirements. F159
DSC AWS Block TB7549-X Distance, sensitivity, refracted angle and beam index calibration for angle beam transducers per AWS and AASHTO requirements. F160
DS AWS Block TB7551-X Calibration block for horizontal linearity and dB accuracy procedures per AWS and AASHTO requirements. F161
30FBH Resolution
Reference Block
TB7160-X Evaluate near surface resolution and flaw size/depth sensitivity of UT equipment. No. 3, No. 5, and No. 8 ASTM flat bottom holes at ten metal travel distances from 0.050 in. to 1.250 in. Included
NAVSHIPS Block TB7567-X Contains six No. 3 side drilled holes. Used for distance-amplitude calibration per NAVSHIPS 0900-006 -3010. F162
ASTM E164 MAB
Block
TB7150-X Miniature Angle Beam (ROMPAS) Block. Distance, beam index, refracted angle, and sensitivity calibration. One inch thick. F197
ISO 7963 Steel TB1065-X Miniature Angle Beam Block Distance, beam index, refracted angle and sensitivity calibration. 25 mm thick. F197

Replace the “X” in the part number with the appropriate number listed below to signify block material:
1 = 1018 Steel
2 = 4340 Steel
4 = 7075-T6 Aluminum
5 = 304 Stainless Steel
8 = 6-4 Titanium