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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Therefore, no standardized test is recommended. Make each successive bend in the opposite direction from the previous bend see Test Axtm B Historical Version s – view previous versions of standard Work Item s – proposed revisions of this standard Translated Version s: If you feel that your comments have not received a fair hearing you should make your views known to the ASTM Committee on Standards, at the address shown ast.
The specimen shall have the following chemical composition: Link to Active This link will always route to the current Active version of the standard.
ASTM B49 – 17 Standard Specification for Copper Rod for Electrical Purposes
This standard does not purport to address all of the safety concerns, if any, associated with its use. In tests of soft rod made at speeds not greater than 12 in. Last previous edition approved in as B 49 — 98e2. Failure to conform shall be cause for rejection. 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.
Before testing, clean each rod sample of oil or grease using acetone or an equivalent solvent. Particular care should be taken to avoid excessive heating of the copper during drawing. Test Procedures—A mm-long test sample is cut from the annealed coil of wire.
After drawing, a coil of the wire shall be formed by winding the conductor around a mandrel having a minimum diameter of mm 7. Mechanical Property Requirements 8.
Samples of 4 4 For a description of a similar, yet alternative standard procedure to determine tarnish? The weight shall be supported initially with a platform and loaded adtm the spiral uniformly and smoothly by either of two methods, namely: Embrittlement test shall be performed on the specimen to reflect propensity towards hydrogen embrittlement and shall be performed only on oxygen-free copper.
The impurity total for UNS C is de? This abstract is a brief summary of the referenced standard. Supply current from a dc power supply or a coulometer. 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.
Other equivalent annealing methods may be used. 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.
NOTE 1—The following speci? Note that the load is not to be removed by either raising the platform or lowering the upper end of the spiral. This is equivalent to a resistivity value of The as-received sample shall be cold rolled to a? The electrolyte shall be a 0. However, in the event of failure of a rod specimen to conform to the criteria of 7. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application.
Softening values for low temperature annealing copper and for other types v49 copper rods, if requested, shall be decided upon between the producer and the user.
ASTM B49 – 17
An ASTM method has not been developed. Cuprous oxide is reduced initially.
Physical Property Requirements 7. Copper wire is initially given a low temperature anneal under tightly controlled conditions, subsequently wound into a spiral helical con? A number in parentheses indicates the year of last reapproval. For a more thorough description of these tests, refer to the Journal of Testing and Evaluation. 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.
C, C, C, and C The values given in parentheses are for information only. This test is performed by reducing the surface oxide s to copper in an electrolytic cell. In the case of oxygen-free silver-bearing coppers, the aztm OFS oxygen-free, silver-bearing will be used as shown in Classi?
B 49 — 98 Reapproved Standard Speci? The manufacturer shall afford the inspector representing the purchaser all reasonable facilities to satisfy him that the material being furnished is in accordance with this speci? 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.
Workmanship, Finish and Appearance This constitutes a second bend. The rod shall be fabricated from copper of such quality and purity. The change in length measured after the weight is removed, and the spiral has relaxed, is considered as a measure of softness. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are astk provided as part of the standard. Make sure that each specimen undergoes the bend test in accordance with Test specimens processed to a diameter other than 0.
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. The latter term means that a copper wire 1 m in length and weighing 1 g would have a resistance of 0.