ASTM B249 PDF

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 shall be sampled and prepared, then tested accordingly to examine their asrm to dimensional mass, diameter, length, straightness, and edge contoursmechanical tensile strength, Rockwell hardness, elongation, and hydrogen embrittlementelectrical resistivity, chemical composition, and grain size requirements. The minimum weight of the composite sample shall be g. Over 2 to 4 Incl 0.

Rejection and Rehearing Packaging and Package Marking Over 8 to 12 [ to ] Incl 0. C, C, and C Table 3—Diameter tolerances for piston? Rounded Unit for Observed or Calculated Value. One specimen from each piece shall be tested without further treatment, and the other specimen shall be tested after precipitation heat treatment.

Mill Test Report In the event of conflict between this specification and the individual casting product specifications, the requirements of the casting specification shall take precedence. Table 4—Tolerances for diameter or distance between parallel surfaces of as-extruded rod and bar applicable to Speci?

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

Number of Tests and Retests 9. In rectangular specimens of reduced thickness, the outside or tension surface shall be an as fabricated surface. Table 6—Diameter tolerances for hot-rolled round rod applicable to Speci? The product shall be well cleaned and free from dirt. 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. Materials and Manufacture 4.

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A superscript epsilon e indicates an editorial change since the last revision or reapproval. 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.

ASTM BASTM BM铜和铜合金棒材、型材及锻件_百度文库

Over 2 to 4 [50 to ] Incl 0. Workmanship, Finish, and Appearance 7.

This abstract is a brief summary of the referenced standard. Measure the departure from straightness at each end and at the center by means of a dial gage mounted astk a suitable movable block and set successively at the three points to be measured while rotating the shaft slowly and carefully to avoid vibration. Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm.

ASTM B249/B249M – 18a

Link to Active This link will always route to the current Active version of the standard. Local departure from straightness should be measured with a 1-ft [mm] straightedge and a feeler gage. This specification establishes the general requirements common to wrought copper and copper alloy rods, bars, shapes, and forgings. Table 15—Schedule of lengths speci?

Tolerances, Plus and Minus,A ashm.

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Combining values from the two systems may result in non-conformance with the standard. Plastic deformation may work harden a material and tend to raise the resistivity, while heating tends to anneal the material with a consequent reduction in resistivity.

If the pH value is not speci? The corners, A, will usually be sharp but shall not have rough or projecting edges. Dimensions, Mass and Permissible Variations 6. C and C Forgings and Extrusions. Expressed to the nearest 1? They are subject to asfm length and maximum weight requirements.

Table 5—Tolerances for diameter or distance between parallel g249 of as-extruded rod and bar applicable to Speci? NOTE 1—The length tolerances in this table g249 all plus; if all minus tolerances are desired, use the same values; if tolerances are desired plus and minus, halve the values given. We have no amendments or corrections for this standard. Full length pieces are usually 10 or 12 ft [ or mm] and subject to established length tolerances.

Historical Version s – view previous versions of standard. NOTE 3—Blank spaces in the tolerance tables indicate either that the material generally is not available or that no tolerances are established. Originally published as B — 51 T. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of h249 limitations prior to use.

The tolerance on the radius shall be one fourth the thickness of the bar.