ASTM B49 PDF

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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D From B Grade 2 copper or equivalent. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. This constitutes a second bend. Qstm 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.

An ASTM method has not been developed. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility. In tests of soft rod made at speeds not greater than 12 in.

This is equivalent to a resistivity value of This abstract is a brief summary of the referenced standard. Physical Property Requirements 7. Historical Version s – view previous versions of standard.

Since good temperature control is extremely important, thermocouples should be placed at strategic locations throughout the annealing device. One end of the test sample is? A complete discussion of this subject is contained in NBS Handbook No edge rolling is required.

ASTM B49 – 17

A number in parentheses indicates the year of last reapproval. After drawing, a coil of the wire shall be formed by winding the conductor around a mandrel having a minimum diameter of mm 7.

The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. The change in length measured after the weight is removed, and the spiral has relaxed, is considered as a measure of softness. B 49 — 98 Reapproved Standard Speci?

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ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard. The impurity total for UNS C is de? Hardness shall be measured along the center line of the annealed specimen using the Rockwell F scale, in accordance with Test Method E Rejection and Rehearing It is also equivalent, for example, to 1. Number of Tests and Retests Other temperatures and times may be used by special agreement between the manufacturer and purchaser.

For example, the wire shall either be allowed to cool for 5 min between passes or quenched to ambient temperature after each pass. Historical Version s – view previous versions of standard Work Item s – proposed revisions of this standard Translated Version s: It is recommended that an 8-mm-diameter dummy rod sample be formed into a mm-diameter ring and placed in the constant temperature bath at the same position normally occupied by the test wire.

Failure to conform shall be cause for rejection. Link to Active This link will always route to the current Active version of the standard. This standard does not purport to address all of the safety concerns, if any, associated with its use. Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters.

Test Method E should be referenced for the determination of silverbearing alloys permitted under this speci?

This standard is subject to revision at any time by the responsible technical committee and must be reviewed every? This standard does not purport to address all of the safety concerns, if any, associated with its use. 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.

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Using an indelible marking tool, a mm gage b499 is marked over the midlength of the copper wire. Other equivalent annealing methods may be used. C, C, and C as de? Material and Manufacture 5. Test Procedures—A mm-long test sample is cut from the annealed coil of wire. The rod shall be free ast, defects, but blemishes of a nature that do not interfere with the intended application are acceptable. The rod shall be fabricated from copper of such quality and purity.

Rod Treatment—A rod sample of suitable length shall be cut from the end of a b4 lot, and if necessary, reduced to a diameter of either 0. 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.

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

The weight shall be supported initially with a platform and loaded onto the spiral uniformly and smoothly by either of two methods, namely: 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.

Packaging and Package Marking Therefore, no standardized test is recommended.

The latter term means that a copper asttm 1 m in length and weighing 1 g would have a resistance of 0. When this reaction is complete, reduction of the cupric oxide occurs at a higher voltage.

This sample shall either be annealed or not annealed according to the following circumstances: 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. The electrolyte shall be a 0.

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