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 test is performed by reducing the surface oxide s to copper in an electrolytic cell. It is the responsibility of the user of this standard to establish appropriate safety ast health practices and determine the applicability of regulatory limitations prior to use.

The fracture shall be between gage marks and not closer than 1 in.

Temperature of the copper wire must be kept uniform and measured quite accurately. Other equivalent annealing methods may be used.

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

C, C, C, and C The rod shall be fabricated from copper of such quality and purity. However, in case of dispute, C, C, and C as de? Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters.

ASTM International takes no position respecting the validity of any patent rights asserted in connection astn any item mentioned asfm this standard.

Note that the load is not to be removed by either raising the platform or lowering the upper end of the spiral.

The value of 0. However, a discussion will be found in Notes X1. Last previous edition approved in as B 49 — 98e2.

In the case of oxygen-free silver-bearing coppers, the designation OFS oxygen-free, silver-bearing will be used as shown in Classi? 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?

Historical Version s – view previous versions of standard. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. In tests of soft rod made at speeds not greater than 12 in. The rod shall be free of defects, but blemishes of a nature that do not interfere with the intended application are acceptable.

This is equivalent to a resistivity value of A superscript epsilon e indicates an editorial change since the last revision or reapproval. No edge rolling is required. Other temperatures and times may be used by special agreement between the manufacturer and purchaser.

ASTM B49 – 17

This constitutes a second bend. Failure to conform shall be cause for rejection.

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 is subject to revision at any time by the responsible technical committee and must be reviewed every? This abstract is a brief summary of the referenced standard. Since good temperature control is extremely important, thermocouples should be placed at strategic locations throughout the annealing device. Particular care should be taken to avoid excessive heating of the copper during drawing.

Current edition approved May asrm, Make each successive bend in the opposite direction from the previous bend see Test Methods B Material and Manufacture 5. Before testing, clean each rod sample of oil or grease using acetone or an equivalent solvent.