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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The rod shall be free of defects, but blemishes of a nature that do not interfere with the intended application are acceptable. When this reaction is complete, reduction of the cupric oxide occurs at a higher voltage.


G Not including oxygen. Originally approved in Packaging and Package Marking Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.

B 49 — 98 Reapproved Standard Speci? The values given in parentheses are for information only. Other equivalent annealing methods may be used. Number of Tests and Retests The value of 0. ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard.

The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. It is also equivalent, for example, to 1.

Mechanical Property Requirements 8. Rod Treatment—A rod sample of suitable length shall be cut from the end of a coil lot, and if necessary, reduced to a diameter of either 0. Other temperatures and times may be used by special agreement between the manufacturer and purchaser. The impurity total for UNS C is de?


The as-received sample shall be cold rolled to a?

ASTM B49 – 17

The weight shall be supported initially with a platform and loaded onto the spiral uniformly and smoothly by either of two methods, namely: Historical Version s – view previous versions of standard. However, in case of dispute, After drawing, a coil of the wire shall be formed by winding the conductor around a mandrel n49 a minimum diameter of mm 7. 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.

C, C, and C as de?

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

It is the responsibility of asstm user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. 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.

Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. Current edition approved May 1, A complete discussion of this subject is contained in NBS Handbook Copper wire is initially given a low temperature anneal under tightly controlled conditions, subsequently wound into a spiral helical con?


Temperature of the copper wire must be kept uniform and measured quite accurately.

Rejection and Rehearing Particular care should be taken to avoid excessive heating of the copper during drawing. The rod shall be fabricated from copper of such quality and purity.

One end of the test sample is? For example, the wire shall either be allowed to cool for 5 min between passes or quenched to ambient temperature after each pass. This standard does not purport to address all of the safety concerns, if any, associated with its use. D From B Grade 2 copper or equivalent. Last previous edition approved in as B 49 — 98e2. A number in parentheses indicates the year of last reapproval. However, in the event of failure of a rod specimen to conform to the criteria of 7.

ASTM B49 – 17 – Standard Specification for Copper Rod for Electrical Purposes

Since good temperature b94 is extremely important, thermocouples should be placed at strategic locations throughout the annealing device. Using an indelible marking tool, a mm gage length is marked over the midlength of the copper wire.

Make sure that each specimen undergoes the bend test in accordance with