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ASTM B/BM Standard Specification for General Requirements for Wrought Copper and Copper-Alloy Rod, Bar, Shapes and. Find the most up-to-date version of ASTM B at Engineering ASTM B/BM Standard Specification for General Requirements for Wrought Copper and Copper-Alloy Rod, Bar, Shapes and Forgings. This.

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Materials and Manufacture 4. Table 5—Tolerances for diameter or distance between parallel surfaces of as-extruded rod and bar applicable to Speci? They are usually 10 or 12 ft [ or mm] and subject to established length tolerances. Cand B The number of samples taken for the determination of composition shall be as follows: Table 8—Thickness tolerances for rectangular and square bar applicable to Speci?

Measure the departure from straightness at each end and at the center by means of a dial gage mounted on a suitable movable block and set successively at the three points to be measured while rotating the shaft slowly and carefully to avoid vibration.

For hexagonal and octagonal rods cold-drawn to size, corner radii shall not exceed 1?

Local departure from straightness should be measured with a 1-ft [mm] straightedge and a feeler gage. One specimen from each piece shall be tested without further treatment, and the other specimen shall be tested after precipitation heat treatment. Packaging and Package Marking Table 1—Tolerances for diameter or distance between parallel surfaces of cold-drawn rod applicable to Speci? Dimensions, Mass and Permissible Variations 6. Standards Subsctiption may be the perfect solution.

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Work Item s – proposed revisions of this standard. If the document is revised or amended, you will be notified by email. C and C Forgings and Extrusions. Table 13—Length tolerances for full-length pieces applicable to Speci? Table 14—Schedule of lengths speci?

ASTM B249/B249M – 18a

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.

The corners, A, will usually be sharp but shall not have rough or projecting edges. In rectangular specimens of reduced thickness, the outside or tension surface shall be an as fabricated surface.

Products shall be manufactured by hot working, cold working, or both, and finished by cold working, annealing, or heat treatment and straightening as identified necessary to meet the properties specified. The product shall be well cleaned and free from dirt. You can download and open this file to your own computer but DRM prevents opening this file on another computer, including a networked server.

Number of Tests and Retests 9. asttm

Combining values from the two systems may result in nonconformance with the specification. Tolerances, Plus and Minus,A in. The total range of the dial reading at a given point, divided by two, gives the departure from straightness at that point. Link to Active This link will always route to the current Active version of the standard. In the case of copper-beryllium alloy, two specimens shall be taken for each required test.

The products shall also meet performance requirements when subjected to residual stress, mercurous nitrate, ammonia vapor, and semiguided bend tests. Rounded Unit for Observed or Calculated Value. To determine compliance with this paragraph, shafting shall, in case of disagreement, be checked by the following method: NOTE 1—The length tolerances in this table are all plus; if all minus tolerances are desired, use the same values; if tolerances are desired plus and minus, halve the values given.

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ASTM BASTM BM铜和铜合金棒材、型材及锻件_百度文库

When so ordered, the edge contours described in 6. To determine compliance with this tolerance, the lengths shall, in case of disagreement, be checked by the following method: When tolerances are speci? Over 2 to 4 Incl zstm.

Within the text the SI values are given in brackets. The testing facility must be able to demonstrate that there is no statistically signi? NOTE 2—Because of the discontinuous nature of the processing of castings into wrought products, it is not always practical to identify speci? Current edition approved Oct.

This standard is not included in any packages. Workmanship, Finish, and Appearance 7. We have no amendments or corrections for this standard. C, C, and C Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. Originally published axtm B — 51 T.

Table 2—Tolerances for diameter or distance between parallel surfaces of cold-drawn rod applicable to Speci? Thickness Tolerances, Plus and Minus,A in.

Should the lot consist of less than?