This standard is issued under the fixed designation A /A M; the number 1 This practice is under the jurisdiction of ASTM Committee A01 on Steel. ASTM AAM_冶金/矿山/地质_工程科技_专业资料。ASTM A AM 碳钢、低合金钢和马氏体不锈钢铸件超声波检验操作. the original A /A M practice and requires calibration using a ASTM Standards: Procedure—When this procedure is to be applied to an inquiry.

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If the cumulative areas traced are con? NOTE 2—The attenuator or calibrated gain control may be used to change the signal amplitude during examination to permit small amplitude signals to be more readily detected.

NOTE 4—Counter bore shall be 1? Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters. B Each indication that equals or exceeds the 0. This standard has a69 approved for use by agencies of the Department of Defense. It also provides supplementary requirements for angle beam testing. This abstract is a brief summary of the referenced standard.

Grid numbers shall be stenciled on the casting for record purposes and for grid area identity. Combining values from the two systems may result in nonconformance with the standard. Repair welds may be inspected before the postweld heat treatment.


ASTM does not give any warranty express or implied or make any representation that the contents of this xstm are accurate, complete or up to date. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend.

The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Procedure B requires calibration using a back wall reflection from a series of solid calibration blocks.

If the reason for loss of back re? Current edition approved May 1, Increase the inspection sensitivity by a factor of three times 10 dB gain with the calibrated attenuator. The side-drilled hole used for the 1? This standard is subject to revision at any time by the responsible technical committee and must be reviewed every?

Ultrasonic Testing Quality Level 1 2 3 4 5 6 7 Area, in. If they are not, the cluster having the largest single indication shall be removed.

A question on ASTM A

If a procedure is not speci? It is not necessary that the ultrasonic signal exceed the amplitude reference line over the entire area.

Search units shall have a astn of 0. Other couplants may be used when agreed upon between the purchaser and supplier. For a material thickness greater than 3 in.

ICS Number Code This examination technique is intended to complement Guide E94 in the detection of discontinuities. Approved May 1, Adjust the gain of the instrument until the back re? To completely delineate the indication, draw a astk around the outer boundary of the center of the number of marks to form the indication area.


Machined surfaces shall be acceptance inspected as soon as possible after machining. Draw a rectangle or other regular shape through the indication in order to form a polygon from which the area may be easily computed. Permission rights to photocopy the standard aztm also be secured from the ASTM website www.

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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. Additional supplemental blocks for testing thickness greater than 10 in. All other types of rejectable satm shall be completely removed. When grids are laid out on the casting surface and they encompass different quality levels, each speci? The area of the location, for the purpose of this evaluation, shall be considered 6a09 area that is con?

NOTE 2— The 3?