ASTM-E428 2008

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E428-08 Standard Practice for Fabrication and Control of Metal, Other than Aluminum, Reference Blocks Used in Ultrasonic Testing

Published By	Publication Date	Number of Pages
ASTM	2008	7

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Categories: 77.040.20 - Non-destructive testing of metals, ASTM

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Description

1.1 This practice covers a procedure for fabrication and control of metal alloy reference blocks used in ultrasonic examination that have a flat-surface sound entry, are cylindrical in shape, and contain flat-bottom holes (FBH) which may be used for checking the performance of ultrasonic examination instrumentation and search units and for standardization and control of ultrasonic examination of metal alloy products. The reference blocks described are suitable for use with either the direct-contact method or immersion pulse-echo ultrasonic methods.

Note 1Use of flat-surface reference blocks may not be suitable for cylindrical materials ( 3 ) .

1.2 While this procedure is basically designed for the fabrication and control of carbon and alloy steel blocks to be used in conjunction with the examination of these materials, the fabrication and control procedures may also be suitable for the preparation of blocks for other types of materials such as nickel-base alloys, certain types of aluminum alloys, and so forth. Additional procedures and controls may be required when fabricating reference blocks from other than carbon or alloy steel material. This practice shall in no way preclude the specification or addition of any supplemented requirements as deemed necessary for the specific application. This practice, however, must not be confused with, nor does it supersede Practice E 127 , specifically governing the fabrication and evaluation of 7075-T6 aluminum alloy ultrasonic standard reference blocks.

Note 2Practice E 127 and Guide E 1158 also describe procedures for selecting material, fabricating blocks, and checking response. Unlike this practice, Practice E 127 has requirements for evaluation relative to a specified standard target.

1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.

1.4 This standard does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

PDF Catalog

PDF Pages	PDF Title
1	Scope Referenced Documents Terminology Summary of Practice
2	Significance and Use Material Selection Fabrication Procedure Checking Physical Characteristics
3	Checking Ultrasonic Response Characteristics TABLE 1
4	FIG. 1
5	Block Identification and Finish FIG. 2 FIG. 3
6	Plugging Procedure Keywords FIG. 4
7	REFERENCES

Additional information

Standard Title	E428-08 Standard Practice for Fabrication and Control of Metal, Other than Aluminum, Reference Blocks Used in Ultrasonic Testing
Published Code	ASTM
Publication Date	2008
Pages Count	7
ICS Codes	77.040.20 - Non-destructive testing of metals

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ASTM-E428 2008

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