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.
|Published (Last):||19 April 2010|
|PDF File Size:||13.98 Mb|
|ePub File Size:||9.9 Mb|
|Price:||Free* [*Free Regsitration Required]|
Because of segregation, the chemical composition, and, therefore, the ferrite content, may differ from point to point on a casting. All measurements shall be made on material after the solution heat treatment required by the applicable product specication, or, if any subsequent solution heat treatment is employed, then after the nal solution heat treatment. Register now while it’s still free! The gures immediately above and below on the lines U and Satm indicate the probable upper and lower bounds of the ferrite range that may be expected.
Defense manufacturing is all about project manufacturing and project accounting. Combining values from the two systems may result in nonconformance with the practice.
This may be formed upon solidication from the molten metal delta ferrite or by transformation from austenite or sigma phase on cooling in the solid state alpha ferrite. When measurements are made on a curved surface the radius of curvature must be greater than 0. The Eng-Tips staff will check q800 out and take appropriate action. Within the text, the SI units are shown in brackets.
Because of segregation, the chemical composition, and, therefore, the ferrite content, may differ from point to point on a casting.
Accordingly, if additional estimates of ferrite content are made by magnetic or metallographic methods, they can be expected to differ from a80 diagram value. Current edition approved Mar. 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.
Standard Practice for Steel Casting, Austenitic Alloy, Estimating Ferrite Content Thereof
Your comments w800 receive careful consideration at a meeting of the responsible technical committee, which you may attend. Measurements may be made either before or after performance of the tension test.
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. The possible extent of this difference is shown by a800 broken lines.
Determination of the ferrite content by any of the procedures described in the following practice is subject to varying degrees of imprecision which must be recognized in setting realistic limits on the range of ferrite content specified. Promoting, selling, recruiting, coursework and thesis posting is forbidden.
BoxN. The American Society for Testing and Materials takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard. 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 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.
ASTM International – Standard References for ASTM A / AM – 14
Download Now White Paper: Methods are described for estimating ferrite content by chemical, magnetic, and metallographic means. Therefore, the precision of the ferrite content estimated from chemical composition depends on the accuracy of the chemical analysis procedure.
Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework. Click Here to join Eng-Tips and talk with other members! Therefore, the precision of the ferrite content estimated from chemical composition depends on the accuracy of the chemical analysis procedure. 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.
Download Now Defense manufacturing is all about project manufacturing and project accounting. 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.
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. 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 values stated in each system are not exact equivalents; therefore, each system must be used independently of the other. The estimates of ferrite content from magnetic measurements S1 or from point counts S2or both, if ordered by the purchaser, also shall be reported.
Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm. If a comparison is made of ferrite content estimated from a product analysis performed by the purchaser, with that estimated from the heat analysis see 7. Resources Digital Transformation may be defined in a number of different ways by analysts or enterprise software vendors.
Answer 3 Yes, see answer 2. Sources of error include the following: Join your peers on the Internet’s largest technical engineering professional community. Link to Active This link will always route to the current Active version of the standard.
Close this window and log in. By joining you are opting in to receive e-mail. Red Flag This Post Please let us know here why this post is inappropriate. ASTM D e1. Historical Version s – view previous versions of standard.
Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. Similar information is available in Table X1. Originally published as A — Thank you for helping keep Eng-Tips Forums free from inappropriate posts. Because of errors in chemical analyses, the calculated ratio may differ from the actual composition ratio and, as a result, the ferrite content may be higher or lower than indicated by the central X1.