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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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 asmt conductors.

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

Test specimens wstm to a diameter other than 0.

No edge rolling is required. This abstract is a brief summary of the referenced standard. UNS C only All others 8.

This standard does not purport to address all of the safety ast, if any, associated with its use. The change in length measured after the weight is removed, and the spiral has relaxed, is considered as a measure of softness. After 1 min of free suspension, the weight is manually removed in a very careful manner and the elongated asfm is allowed to relax by placing it on a table for an additional period of 1 min.


Other temperatures and times may be used by special agreement between the manufacturer and purchaser.

For a more thorough description of these tests, refer to the Journal of Testing and Evaluation. Softening values for low temperature annealing copper and for other types of copper rods, if requested, shall be decided upon between the producer and the user. Samples of 4 4 For a description of a similar, yet alternative standard procedure to determine tarnish?

Failure to conform shall be cause for rejection.

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

In the case of oxygen-free silver-bearing coppers, the designation OFS oxygen-free, silver-bearing will be used as shown in Classi? G Not including oxygen.

It is the responsibility of the user of b9 standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Historical Version s – view previous versions of standard Work Item s – proposed revisions of this standard Translated Version s: The as-received sample shall be cold rolled to a? This is equivalent to a resistivity value of The latter term means that a copper wire 1 m in length and weighing 1 g would have a resistance of 0.

Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. The rod shall be fabricated from copper of such quality and purity.


ASTM B49 – 10 Standard Specification for Copper Rod Drawing Stock for Electrical Purposes

This constitutes a second bend. However, in case of dispute, In the case of tests on soft or annealed copper rod, however, the effects of speed of testing are not pronounced.

Therefore, no standardized test is recommended. C, C, C, and C 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.

Number of Tests and Retests Physical Property Requirements 7. Link to Active This satm will always route to the current Active version of the standard.

ASTM B49 – 17

When this reaction is complete, reduction of the cupric oxide occurs at a higher voltage. Make sure that each specimen undergoes the bend test in accordance with 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.

Using a thermocouple embedded in the rod to a depth equal to the radius, temperature should reach the annealing temperature within a 5-min period. Supply current from a dc power supply or a coulometer.