ASTM A – Designation: A /A M – 01 An American National Standard Standard Practice f. This standard is issued under the constant designation a /a m; the number right away following the designation suggests the yr. according to the guidelines of ASTM E, “Standard Guide for ASTM A, “Standard Practice for Steel Casting, Austenitic Alloy.

Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.

Therefore, the precision of the ferrite content estimated from chemical composition depends on the accuracy of the chemical analysis procedure. The gures immediately above and below on the lines U and Xstm indicate the probable upper and lower bounds of the ferrite range that may be expected. The ferrite content may be limited by purchase order requirements or by the design construction codes governing the equipment in which the castings will be used. It’s easy to join and it’s x800. Regarding 2 and 3you need to know the niobium and nitrogen content of your steel before you carry out the calculation.

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Thank you for helping keep Eng-Tips Forums free from inappropriate posts. ASTM D e1. Signicance and Use 4. If the composition ratio is 1. Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM Headquarters. These may so alter the magnetic response of the alloy that the indicated ferrite content is quite different from that of the same chemical composition that has undergone different thermal treatment.

NOTE 1—There may be a substantial decrease in the ferrite content of weld deposits after solution heat treatment in comparison with the as-deposited value. The estimates of ferrite content from magnetic measurements S1 or from point counts S2or both, if ordered by the purchaser, also shall be reported.

Also, because the magnets or probes of the various measuring instruments are small, different degrees of surface roughness or surface curvature will vary the magnetic linkage with the material being measured.

Originally published as A — Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility. Download Now White Paper: Because of segregation, the chemical composition, and, therefore, the ferrite content, may differ from point to point on a casting. The quantity of ferrite in the structure is fundamentally a function of the chemical composition of the alloy and its thermal history.

When measurements are made on a curved surface the radius of curvature must be greater than 0. By joining you are opting in to receive e-mail. The quantity of ferrite in the structure is fundamentally a function of the chemical composition of the alloy and its thermal history.

Standard Practice for Steel Casting, Austenitic Alloy, Estimating Ferrite Content Thereof

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. The possible extent of this difference is shown by the broken lines. The Eng-Tips staff will check this out and take appropriate action. Accordingly, if additional estimates of ferrite content are made by magnetic or metallographic methods, they can be expected to differ from the diagram value.

Join your peers on the Internet’s largest technical engineering professional community. 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. The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other.

Combining values from the two systems may result in nonconformance with the practice. If a tension test is not required by the applicable product specication, measurements may be made on a specimen cut from a keel block of a design in Fig.

ASTM International – Standard References for ASTM A / AM – 14

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Click Here to join Eng-Tips and talk with other members! Link to Active This link will always route to the current Active version of the standard. Students Click Here Join Us! Methods are described for estimating ferrite content by chemical, magnetic, and metallographic means. Download Now Defense manufacturing is all about project manufacturing and project accounting.

The ferrite content may be limited by purchase order requirements or by the design construction codes governing the equipment in which the castings will be used. Measurements may be made either before or after performance of the tension test.

These may so alter the magnetic response of the alloy that the indicated ferrite content is quite different from that of the same chemical composition that has undergone different thermal treatment. All measurements shall be made on weld deposits as deposited.