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B — 02 Standard Speci? A number in parentheses indicates the year of b818 reapproval. A superscript epsilon e indicates an editorial change since the last revision or reapproval. This standard has been approved for use by agencies of the Department of Defense. The SI values given in parentheses are for information only. Current edition ast, April 10, Originally published as B — 44 T. Last previous edition B — Limits for unnamed elements may be established and analysis required by agreement between the manufacturer or supplier asym purchaser.
The requirements are speci? Electrical Resistivity Requirements n188. Mechanical Property Requirements 9. When a machined specimen becomes necessary for any test required under this speci? Materials and Manufacture 5. Element Copper incl silvermin Phosphorus Oxygen, max. CB CB C A Impurity maximums in ppm of C shall be: B C, C, and C are oxygen-free coppers with the addition of a speci?
The compositions of these alloys are equivalent to C plus the intentional addition of silver. C C, Satm, C, and C are electrolytic tough-pitch copper with silver additions. Elongation in 2 in. Bend Test G188 In case of a dispute, a referee method in accordance with Asttm C shall be used.
Hydrogen Embrittlement Susceptibility Test The actual performance of this test is not mandatory under the terms of this speci? The notch depth tolerance shall be Alternatively, when the test is performed using speedinsensitive equipment that can select a maximum imbalance signal, a maximum imbalance signal of 0. Product with discontinuities indicated by the testing unit may be reexamined or retested, at the option of the manufacturer, to determine whether the discontinuity is cause for rejection.
Signals that are found to have been caused by minor mechanical damage, soil, or moisture shall not be cause for rejection of the product provided the dimensions of the product are still within prescribed limits and the product is suitable for its intended application.
ASTM B – Standard Specification for Seamless Copper Bus Pipe and Tube
Dimensions, Weights, and Permissible Variations Nominal or Standard Pipe Size, in. Diameter tolerances shall be in accordance with Table 5. The tolerances on distance between parallel surfaces for rectangular and square tube in straight lengths only shall be in accordance with Table 7 and Fig.
The following tolerances are plus and minus; if tolerances all plus or all minus are desired, double the values asm.
Percent of the speci? Rectangular and Square Tubes—The permissible radii for commercially square corners shall be in accordance with Table The requirement is not applicable atm tubes in the annealed temper or to tubes whose speci?
Workmanship, Finish, and Appearance It shall be well cleaned and free from dirt.
Drillings, millings, and so forth shall be taken in approximately equal weight from each of the sample pieces selected in accordance with The minimum weight of the composite sample shall be g.
Conformance shall be determined by the manufacturer by analyzing samples taken at the time the castings are poured or samples taken from the semi? If the manufacturer determines the chemical composition of the material during the course of manufacture, he shall not be required to sample and analyze the? The number of samples taken for determination of chemical composition shall be as follows: Distance Between Outside Parallel Surface, in. A mm Wall Thickness, in. Asgm the case of rectangular tube, the major dimension determines the thickness tolerance applicable to all walls.
Number of Tests and Retests The values for the Rockwell hardness number of each specimen shall be established asym taking the arithmetical average of at least asfm readings.
The xstm of the tests on both of these specimens shall meet the speci? Failure of more than one specimen to meet the speci? NOTE 1—The following tolerances are plus and minus; if tolerances all plus or all minus are desired, double the values given.
Dimensions a or b Fig. Nominal dimension b determines tolerance applicable to both b and d.
Up to 6 in. Astn this case, the test specimen conforming to Type No. This surface shall constitute the outer periphery of the bend. Length, ftB m Over 3 0.
Pipe and tube, before bending, may be? This surface shall constitute the outer periphery of the bend, which shall be made on a radius equal to that dimension of the asttm specimen radial to the bend. B For lengths greater than 10 ft 3. Rejection and Rehearing Rejection should be reported to the manufacturer or the supplier promptly and in writing.
In case of dissatisfaction with the results of the test, the manufacturer or the supplier may make claim for a rehearing. Mill Test Report Packing and Package Marking Requirements For nominal or standard pipe-size tubular sections, the bend shall be made on a radius in accordance with the following schedule: This term means that a wire 1 m in length and weighing 1 g would have a resistance of 0.
This is equivalent to a resistivity value of It b18 also equivalent, for example, to 1. The derived SI unit for force is the newton Nwhich is de? Several sections were modi? 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 wstm 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?
ASTM B188 Grade C10500 H80 pipe (round), tube (round)
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