Single ASTM E127 Block

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Used for measurement of the sensitivity and/or resolution of normal beam transducers. In accordance with ASTM E127.

Most common parameters shown below.  Specials available upon request:

  • Flat-bottom hole diameter: Normally 1/64" to 8/64".  Other sizes available upon request.
  • Metal Travel Distance:  Most commonly 0.0625" to 6.000".  Other sizes available upon request.
  • Block diameter: 2.0 diameter for MTD up to and including 6.000", 2.5" diameter for MTDs over 6.000"
  • Custom hardwood storage cases are available upon request.

Want to know what ASTM Block IDs really mean? We can help! Let's use 7075-5-0300 as an example...

  • The '7075' is the material the block is made from. This could be 4340, 304, 6AL4V, and so on.
  • The '5' is the flat-bottom hole (FBH) diameter in 64ths. This example block has a 5/64 diameter FBH.
  • The '0300' is the metal travel distance. Place an imaginary decimal point after the 2nd number, and that will give you the MTD in inches. This example block has a 3.000 MTD.
  • Still have questions, or need some help? Just call our office or drop us an e-mail.

Note: ASTM Blocks in aluminum and steel are not recommended for long-term immersion. If blocks are intended for this purpose, please contact Technical Sales to discuss industrial coating options. 

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