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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Reference Radiographs for Steel Castings Up to 2 in.

ASTM A990/A990M – 18

Combining values from the two systems may result in non-conformance with the standard. Proceed to Checkout Continue Shopping. Castings shall be repair welded and solution heat treated prior to final cleaning aastm blasting, and shall not be peened, plugged, or impregnated. 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.

Process and Manufacture 6. Test results shall conform to the tensile requirements sstm Current edition approved September 10, A — AWS A5. As the voice of the U.

Also includes scrapped machinery and fabricated items, chips, and turnings. Historical Version s – view previous versions of standard.

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. Originally approved in ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard.

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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. All other surface features must meet the acceptance criteria class in Table 2. Selection will Chromium-Nickel, Corrosion-Resistant, for Severe Ser- vice2 depend on design and service conditions, mechanical proper- ties, and corrosion-resistant characteristics.

Combining values from the two systems may result in nonconformance with the standard.

Process and Manufacture 6. Current edition approved March 1, Classes A, B, C, and D are de? Reference Radiographs for Heavy-Walled 2 to in. Within the text, the SI units are shown in brackets or parentheses. 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.

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If that second casting fails, all remaining castings shall be radiographed in only the rejectable areas found on the? Make a transverse side the manufacturer and purchaser. A number in parentheses indicates the year of last reapproval.

ASTM钢铁标准.A_百度文库

Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. Selection will depend on design and service conditions, mechanical properties, and corrosion-resistant characteristics. You may delete a document from your Alert Profile at any time. 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.

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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. Last previous edition approved in as A — 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.

Such requirements may include, but are not 9. The distinguishing require- ments of this specification are as follows. Workmanship, Finish, and Appearance Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.

The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other. Such requirements may include, but are not limited to, the following: 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. General Conditions for Delivery 4.