ASTM有色金属标准.B49 – Designation: B 49 – 98 (Reapproved ) Standard Speci?cation for Copper Rod. Product. Oxygen-Free Copper Rod Cu-OFE-8, Cu-OFE, Cu-OFE, Cu- OFE,. Cu-OFE, Cu-OFE, Cu-OFE Standard. PN-EN , ASTM B ASTM B Standard Specification for Copper Rod for Electrical Purposes. standard by ASTM International, 04/01/ View all product details.

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Link to Active This link will always route to the current Active version of the standard.

The electrolyte shall be a 0. Supply current from a dc power supply or a coulometer. A superscript epsilon e indicates an editorial change since the last revision or reapproval. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend.

However, in case of dispute, No edge rolling is b449. After 1 min of free suspension, the weight is manually removed in a very careful manner and the elongated spiral is allowed to relax by placing it on a table for an additional period of 1 min. It is informational only and not an official part of the standard; the full text of the standard ast, must be referred to for its use and application. Failure to conform shall be cause for rejection.

When the individual reactions between the oxides and hydrogen ions are complete, gaseous hydrogen is evolved and may be seen visually at the surface of the copper rod sample.


This specification covers the requirements for rod drawing stock produced from electrolytic tough-pitch or oxygen-free coppers and is suitable for further fabrication into electrical conductors.

Rejection and Rehearing Make each successive bend in the opposite direction from the previous bend see Test Methods B Work Item s – proposed revisions of this standard. The values given in parentheses are for information only. The manufacturer shall afford the inspector representing the purchaser all reasonable facilities sstm satisfy him that the material being furnished is in accordance with this speci?


aztm Although 10 milliampere mA is a typical value of current, it is best to have equipment capable of operating in the range of 1 to 20 mA. This standard has been approved for use by agencies of the Department of Defense.

Users of this standard are aastm advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility. An ASTM method has not been developed. Before testing, clean each rod sample of oil or grease using acetone or an equivalent solvent. Other temperatures and times may be used by special agreement between the manufacturer and purchaser.

However, a discussion will be found in Notes X1. This test is performed by reducing the surface oxide s to copper in an electrolytic cell. Because of the uncertain correlation with performance, and the subjective aspect of interpretation, these tests should only be used as an indicator of in-house process control. ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard.

However, in the event of failure of a rod specimen to conform to the criteria of 7. Make sure that each specimen undergoes the bend test in accordance with 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.

C, C, and C as de? ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date. A number in parentheses indicates the year of last reapproval. The fracture shall be between gage marks and not closer than 1 in.

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This standard is subject to revision at any time by the responsible technical committee and must be reviewed every? The rod shall be free of defects, but blemishes of a nature that do not interfere with the intended application are acceptable.

A complete discussion of this subject is contained in Bb49 Handbook Mechanical Property Requirements 8. Historical Version s – view previous versions of standard Work Item s – proposed revisions of this standard Translated Version s: Material ast, Manufacture 5.

From B Grade 1 copper or equivalent. Packaging and Package Marking C, C, C, and C In tests of soft rod made at speeds not greater than 12 in. This is equivalent to a resistivity value of This sample shall either be annealed or not annealed according to the following circumstances: The value of 0.

The weight shall be supported initially with a platform and loaded onto the spiral uniformly and smoothly by either of two methods, namely: G Not including oxygen. NOTE 1—The following speci?

ASTM B49 – 17

For example, the wire shall either be allowed to cool for 5 min between passes asym quenched to ambient temperature after each pass. Current edition approved May 1, Particular care should be taken to avoid excessive heating of the copper during drawing. Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters.