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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Since these grades possess varying degrees of suitability for service in corrosive environments, it is the responsibility of zstm purchaser to determine which grade shall be furnished.

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. The values stated in each system a9990 not be exact equivalents; therefore, each system shall be used independently of the other.

The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters.

Norma ASTM A/AM

Originally approved in E Reference Radiographs for Heavy-Walled 2 to in. Fusion discontinuities, expansion discontinuities, and inserts are unacceptable. Repair asym Welding If the casting grade does not require heat treatment, the bar used for the test specimen 5. Classes A, B, C, and D are de?

Initial excavation of defects may be accomplished by any method including air-arc gouging, grinding, or machining; however, all visible traces of the air-arc process shall be removed by grinding or machining.

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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 year of last revision. The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other.

Test results shall conform to the tensile requirements speci? If the casting grade does not require heat treatment, the bar used for the test specimen shall not be heat treated. Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm.

Dimensional tolerances should be included on the casting drawing.

Please first log in with a verified email before subscribing to alerts. Such requirements may include, but are not 9. The choice of manufacturing procedure to be used for producing the alloy castings shall be according to specified metallic contents. Standards Subsctiption may be the perfect solution. Each class imposes speci?

ASTM A 全文-调研报告-在线文档

Referenced Documents 4 in. All other surface features must meet the acceptance criteria class in Table 2. Historical Version s – view previous wstm of standard.

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Your Alert Profile lists the documents that will be monitored. Fusion disconti- manufacturer and purchaser.

A M As-cast A Quench in water or rapid cool by other means as agreed upon by the manufacturer and purchaser. Subscription pricing is determined by: If the second casting passes, then no additional radiography beyond the normal amount 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.

Only the filler material grades specified a9900 Table 5 shall be used.

ASTM A990/A990M – 18

Within the text, the SI units are shown in parentheses. Ordering Information shall not be heat treated. If the casting grade does not require heat treatment, the bar used for the test specimen shall not be heat treated. 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 International takes no position respecting the validity of aztm patent rights asserted in connection with any item mentioned in this standard.

E Reference Radiographs for Heavy-Walled to in. General Conditions for Delivery 4. Within the text, the SI units are shown in parentheses.