ASTM B221-08 PDF

ASTM B221-08 PDF

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B — 05a Standard Speci? A number in parentheses indicates the year of last reapproval. A superscript epsilon e indicates an editorial change b21-08 the last revision or reapproval.

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This standard has been approved for use zstm agencies of the Department of Defense. NOTE 1—Throughout this speci?

NOTE 2—For rolled or cold-? Current edition approved Oct. Originally approved in Last previous edition approved in as B — Analysis shall be made for the elements for which limits are shown in this table. C For the purpose of determining conformance to these limits, an observed value or a calculated value obtained from analysis shall be rounded to the nearest unit in 2b21-08 last right-hand place of the? D Others includes listed elements for which no speci? The producer may analyze samples for trace elements not speci?

However, such analysis is not required and may not cover all metallic Others elements. Should any analysis by the producer or the purchaser establish that an Others xstm exceeds the limit of Each or that the aggregate of several Others elements exceeds the limit of Total, the material shall be considered nonconforming.

E Other Elements—Total shall be the sum of unspeci? F The aluminum content shall be calculated by subtracting from The total for other elements does not include zirconium. I Manganese plus chromium shall total 0. K Bismuth and lead shall be 0. M Composition of cladding alloy applied during the course of manufacture. Refer to Terminology B for de? O H H up through 5. T62G 5 H up through 25 over 25 through 32 up through 32 2. To determine conformance to this speci?

C Elongation of full-section and cut-out sheet-type specimens is measured in 2 in. Elongation of cut-out round specimens is measured in 43 specimen diameter. E These alloys are also produced in the F temper for which no tensile properties are speci? G Material in the T42 and T62 tempers is not available from the material producers. I Minimum yield strength for tube, J Minimum yield strength for tube, K Yield strength is not applicable in tube.

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L Only in tube form. M Properties not applicable to extruded tube over 2. However, should subsequent testing by the purchaser establish that the material does not meet these requirements, the material shall be subject to rejection.

Weight, max per Piece, lb Max Width: B The thickness of any element of a pro? C The discontinuity class limits are de? Materials and Manufacture 5. The producer may use his own or any other suitable facilities for the performance of the inspection and test requirements speci? The purchaser shall have the right to perform any of the inspections and tests set forth in this speci?

Conformance shall be determined by analyzing samples taken when the ingots are poured, or samples taken from the? If the chemical composition has been determined during the course of manufacture, analysis of the? NOTE 3—It is standard practice in the United States aluminum industry to determine conformance to the chemical composition limits prior to further processing of ingots into wrought products.

Due to the continuous nature of the process, it is not practical to keep a speci? NOTE 4—It is difficult to obtain a reliable analysis of each of the components of clad materials using material in its? A reasonably accurate determination of the core composition can be made if the cladding is substantially removed prior to analysis. The cladding composition is more difficult to determine because of the relatively thin layer and because of diffusion of core elements to the cladding.

The correctness of cladding alloy used can usually be veri? Other methods may be used only when no published ASTM test method is available.

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In case of dispute, the methods of analysis shall be agreed upon between the producer and purchaser. Tensile Properties of Material from the Producer 8. Sampling shall be in accordance atm Practice E The heat-treated sample may be tested prior to 4 days natural aging but if they fail to conform to the T42 temper properties, the test may be repeated after completion of 4 days natural b21-08 without prejudice.

Heat Treatment and Reheat-Treatment Capability Each sample shall be taken from material considered acceptable in accordance with the lot-acceptance criteria of Table 4.

A minimum of three adjacent replicate specimens shall be taken from each sample and tested. Specimens shall be selected at random and shall be, if possible, a minimum of 2 by 4 in. B221-0 test location shall be 9 Test specimens may be prepared by machining a?

For small sizes of tubes, a cut-out portion may be? Chemical milling may be used on? The electrical conductivity shall be determined in accordance with Practice E in the following locations: B When material is found to be unacceptable, it shall be reprocessed additional precipitation heat treatment or re-solution heat treatment, stress relieving, straightening, and precipitation heat treatment, when applicable.

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Using a magni? For a tube having a diameter larger than can be properly mounted for polishing and examination, the portions of the cross section polished for examination may consist of an arc about 1? Wire, Rod, Bar and Pro? Rod, Bar and Pro? Tube Other Than Round Angularity: Any requirement not so covered is subject to negotiation between the producer and purchaser.

On approval of the purchaser, however, the producer or the supplier may use a system of statistical quality control for such examination.

Retest and Rejection All specimens so selected for retest shall meet the requirements of the speci? As much of the rejected material as possible shall be returned to the producer or supplier by the purchaser. Packaging and Package Marking The applicable level shall be as speci?

Marking for shipment of such material shall be in accordance with Fed. For the products described, mechanical property limits for the respective size ranges are based on the analyses of at least data from standard production material with no more than ten data from a given lot. All tests are performed in accordance with the appropriate ASTM test methods.

A designation not in con? Unalloyed aluminum contains a minimum of X, and so forth A2. Committee B07 has identi? ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard.

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.

This standard is subject to revision at any time by the responsible technical committee and must be reviewed every? Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend.

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. Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm.