ASTM A991 PDF

ASTM A – Designation: A /A M – 98 (Reapproved ) Standard Test Method for Conducti. Purchase your copy of ASTM A/AM – 17 as a PDF download or hard copy directly from the official BSI Shop. All BSI British Standards. This standard is issued under the fixed designation A/AM; the number This test method is under the jurisdiction of ASTM Committee A01 on Steel, 2.

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ASTM International – Standard References for ASTM A / AM – 17

Users of this standard are expressly advised that determination of the validity of any such patent rights, and the w991 of infringement of such rights, are entirely their own responsibility. All other conditions described in 6. Originally approved in Results of the application of this test method shall be expressed as a variation from a temperature set point. Historical Version s – view previous versions of standard. Survey documentation requirements, and the procedure used to subsequently establish the a91 working zone, are defined in this test method.

Heat Treatment in the Working Zone A z991 furnace modi? Regardless of heat treat furnace type, or processing cycle, it may be necessary for users to know the temperature uniformity in the furnace and whether the material is processed in a zone within the furnace that is capable of meeting the applicable permissible temperature variation requirements.

The values stated in each system are not exact equivalents; therefore, each system is to be used independently of the other, without combining values in any way. The working zone may be comprised of one or more heating zones in the furnace. The acceptance of any such additional requirements shall be dependent on negotiations with aa991 supplier and must be included in the order as agreed upon by the purchaser and supplier.

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Within the text, the SI units are shown in brackets. Interpretation of Results and Establishment of the Working Zone 9. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Link to Active This link will always route to the current Active version of the standard.

This method is used to determine the capability of the furnace to meet the permissible temperature variation specified in the applicable product specification, or as agreed to by the purchaser and supplier of heat treat services. Combining values from the two systems may result in non-conformance with the standard. A superscript epsilon e indicates an editorial change since the last revision or reapproval. Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters.

Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. Documentation of Survey Results 8. Details of this procedure shall be as agreed to between purchaser and supplier.

ASTM A991/A991M – 17

It provides validation of temperature uniformity by a series of tests rather than a single test. The acceptance of any such additional requirements shall be dependent on negotiations with the supplier and must be included in the order as agreed upon by the purchaser and supplier. A number in parentheses indicates the year of last reapproval.

Examples of these surveying techniques are listed below. Place them at the outer extremities, the center of the proposed working zone, and in areas of suspected variability in the proposed working zone.

Regardless of heat treat furnace type, or processing cycle, it may be necessary for users to know the temperature uniformity in the furnace and whether the material is processed in a zone within the furnace that is capable of meeting the applicable permissible temperature variation requirements. In each test, determine the temperature variation pattern at one or more of the test locations. Use of representative material to simulate product during survey is permitted.

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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. AMS Pyrometry3 3. For proposed working zones greater than, or equal to, 12 in. This method is used to determine the capability of the furnace to meet the permissible temperature variation speci? It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the asgm of regulatory limitations 9a91 to use.

Calibration to such national standards shall be done at least once every two years. If you feel that your comments have not received a fair hearing you should make your views known to the ASTM Committee on Standards, at the address shown below. Survey documentation requirements, and the procedure used to subsequently establish the furnace working zone, are de? Attach survey test sensors to, or set them in the load.

Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. Current edition approved Oct. This standard is subject to revision at any time by the responsible technical committee and must be reviewed every?

Furnace Survey Equipment 5. The rate of conveyance shall be representative of normal operating conditions. Starting time and chart speed shall be marked on the original temperature charts, 8.