22 Oct ASTM A – Designation: A /A M – 01 An American National Standard Standard Practice f. 7 Apr This standard is issued under the constant designation a /a m; the number right away following the designation suggests the yr. Find the most up-to-date version of ASTM A at Engineering
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Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework. 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.
Such issues are the result of project complexity, size, uniqueness and regulation, as well as the need for virtual team collaboration. Historical Version s – view previous versions of standard. Answer 3 Yes, see answer 2.
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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 astk. The Eng-Tips staff will check this out and take appropriate action. Thanks for any help RE: Because of segregation, the chemical composition, and, therefore, the ferrite content, may differ from point to point on a casting. Join your peers on the Internet’s largest technical engineering professional community.
Methods are described for estimating ferrite content by chemical, magnetic, and metallographic means.
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.
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The ferrite content may be limited by purchase order requirements or by the design atm codes governing the equipment in which the castings will be used. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.
The quantity of ferrite in the structure is fundamentally a function of the chemical composition of the alloy and its thermal history. Few production environments have the luxury of ordering new equipment to replace existing machines on their shop floor. Are you an Engineering professional?
Sources of error include the following: Thank you for helping keep Eng-Tips Forums free from inappropriate posts. Posting Guidelines Promoting, selling, recruiting, coursework and thesis posting is forbidden. The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other.
ASTM International – Standard References for ASTM A / AM – 14
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Standard Practice for Steel Casting, Austenitic Alloy, Estimating Ferrite Content Thereof
Download Now The Architecture, Engineering and Construction AEC industry is constantly looking for process improvements to better manage potential project delays and costs. Students Click Here Join Us! Regarding 2 and 3you need to know the niobium and nitrogen content of your steel before you carry out the calculation. Therefore, the precision of the ferrite content estimated from chemical composition depends on the accuracy of the chemical analysis procedure. Resources Few production environments have the luxury of ordering new equipment to replace existing machines on their shop floor.
Sources of asm include the following:.
Combining values from the two systems may result in nonconformance with the practice. Red Flag This Post Please let us know here why this post is inappropriate.
It’s easy to join and it’s free. Also, because the magnets or probes of the various measuring instruments are small, different degrees of surface roughness or surface w800 will vary the magnetic linkage with the material being measured.