ASTM A990 PDF

Find the most up-to-date version of ASTM A at Engineering Find the most up-to-date version of ASTM A/AM at Engineering ASTM A Castings, Iron-Nickel-Chromium and Nickel Alloys, Specially Controlled for Pressure Retaining Parts for Corrosive

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Referenced Documents 4 in. An analysis of every heat is required. Since these grades possess varying degrees of suitability for service in corrosive environments, it is the responsibility of the purchaser to determine which grade shall be furnished.

ASTM A990/A990M – 18

Failure to comply with the general require- 8. Each class imposes speci? Last previous edition approved in as A — Last previous edition A — Also includes scrapped machinery and fabricated items, chips, and turnings. Originally approved in If you feel that your q990 have not received a fair hearing you should make your views known to the ASTM Committee on Aastm, at the address shown below.

E Reference Radiographs for Heavy-Walled 2 to in.

An analysis of every heat 4. This standard is not included in any packages.

ASTM钢铁标准.A_百度文库

Within the text, the SI units are shown in brackets or parentheses. Last previous edition approved in as A — The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other.

All other surface features must meet the acceptance criteria class in Table 2. A superscript epsilon e indicates an editorial change since the last revision or reapproval. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. This standard is subject to revision at any time by the responsible technical committee and atsm be reviewed every five years and if not revised, either reapproved or withdrawn.

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It is informational only and not 9a90 official part of the standard; the full text of the standard itself must be referred to for its use and application. Selection will depend on design and service conditions, mechanical properties, and corrosion-resistant characteristics.

Current edition approved March 1, The distinguishing require- ments of this specification are as a990. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.

Combining values from the two systems may result in non-conformance with the standard. If the casting grade does not require heat treatment, the bar used for the test specimen 5.

The bar shall be solution heat treated per the requirements of Table 4 in production furnaces a9990 the same procedure as the castings it represents. All forms of cold working, mechanical deformation, hammering or peening, in excess of that required for normal cleaning is prohibited. This standard is also available to be included in Standards Subscriptions. A — AWS A5. It is the responsibility of the user of this standard to establish appropriate safety astn health practices and determine the applicability of regulatory limitations prior to use.

E Reference Radiographs for Heavy-Walled 2 to in. Castings shall be repair welded and solution heat treated prior to final cleaning by blasting, and shall not be peened, plugged, or impregnated.

Selection will depend on design and service conditions, mechanical proper- ties, and corrosion-resistant characteristics.

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A — 05 Standard Specification for Castings, Iron-Nickel-Chromium and Nickel Alloys, Specially Controlled for Pressure Retaining Parts for Corrosive Service1 This standard is issued under the fixed designation A ; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the zstm of last revision.

This standard has either been superceded and replaced by a new version or discontinued. All surfaces to be welded and at least 1 in. Subscription pricing is determined by: Active view current version of standard.

ast Nondestructive examination requirements such as casting thickness shall be evaluated by visual, radiographic, and liquid penetrant inspection. A number in parentheses indicates the year of last reapproval.

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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. Within the text, the SI units are shown in brackets or parentheses. Aatm values from the two systems may result in nonconformance with this speci? Specialization, intermediation, and growth. Originally approved in Combining values from the two systems may result in nonconformance with the standard.

This standard is subject to revision at any time by the responsible technical committee and must be reviewed every? ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard.