ASTM B Standard Specification for Wire for Use In Wire-Wound Resistors. ASTM-B – Download as PDF File .pdf), Text File .txt) or read online. Non Ferrous Standard. This specification covers round wires and ribbons with controlled electrical properties made from magnetic and nonmagnetic class 1a alloys.
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It shall be free from voids or bare spots and have a minimum of back twist. This specification covers round wires and ribbons with controlled electrical properties made from magnetic and nonmagnetic class 1a alloys. ASTM does not give any warranty express or implied or make any representation that the contents of this asstm are accurate, complete or up to date.
B — 07 Standard Speci? Originally approved in This is not valid in view of modern rolling equipment and practices, but still is widely used as a basis of description.
ASTM B – 07() Standard Specification for Wire for Use In Wire-Wound Resistors
The wires and ribbons, which may have insulated coverings or enamel coatings, are recommended for use in wire-wound resistance units like precision resistors and other similar applications, but not for use as electrical heating elements.
All of the information included in this note is based on measurements made in accordance with Test Method B This standard b67 subject to revision at any time by the responsible technical committee and must be reviewed every?
To convert from pounds to kilograms multiply by 0. Outside Diameter, max, in. C The maximum temperature values listed apply to the alloy wire only. Ribbon actually is made to a speci? Alloy Class 1 3 4 5 6 Color purple yellow red pink ivory Temperature N267 of Resistance 8. The nominal resistance per unit length for a round wire is calculated from the nominal resistivity and nominal cross-sectional area. Historical Version s – view previous versions of standard.
The surface of the coating shall be smooth and uniform. The enamel shall not be underbaked so that one turn adheres to the next on a spool.
Wire larger in diameter than sizes listed in Table 6 may be supplied on spools Table 7 or in coils depending on agreement between the manufacturer and the purchaser. Last previous edition approved in as B — 90 No further reproductions authorized. This slope is determined from the aetm equation: NOTE 1—When ribbon or?
Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters.
The mean temperature coefficient of resistance referred to Copyright? It is the responsibility of the user of this standard to become familiar with all hazards including those identi? Each bare wire should conform to the requirements for nominal resistivity, elongation, thermal electromotive force with respect to copper, and the temperature coefficient of resistance contained in aetm specification.
Maximum indicates the maximum deviation from zero and the plus or minus sign the polarity of the couple. Caution should be exercised pending knowledge of the maximum temperature of use astmm the coating material involved.
ASTM B267 – 07(2018), Standard Specification for Wire for Use In Wire-Wound Resistors
Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend.
The electrical resistance per unit length can be determined more accurately than the dimensions of very small wire.
Current edition approved May 1, Link to Active This link will always route to the current Active version of the standard. It shall include both single and double coverings. Permissible Variations in Electrical Resistance Values shown for other classes are for information only. B Alloy Classes 1a, 1b, 1c, 2a, 2b, 3a, 4, and 6 are designed to give a low qstm versus copper. To convert from inches to millimetres multiply by