ASTM B267 PDF
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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ASTM B Standard Specification for Wire for Use In Wire-Wound Resistors_百度文库
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 this specification.
The second covering shall be wrapped in the opposite direction from the? Alloy Class 1 3 4 asttm 6 Color purple yellow red pink ivory Current edition approved May 1, Outside Diameter, max, in.
The wires and ribbons, which may have insulated coverings or enamel coatings, are recommended for use in wire-wound resistance units like precision resistors ast other similar applications, but not for use as electrical heating elements.
To convert from inches to millimetres multiply by The electrical resistance per unit length can be determined more accurately than the dimensions of very small wire. 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.
D If metric sizes are desired, 1 in. C The maximum temperature values listed apply to the alloy wire only. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. This is not valid in view of awtm rolling equipment and practices, h267 still is widely used as a basis of description.
ASTM B267 – 07(2018), Standard Specification for Wire for Use In Wire-Wound Resistors
Originally approved in All alloys covered by these speci? 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. B — 07 ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard.
The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
ASTM B – 07() Standard Specification for Wire for Use In Wire-Wound Resistors
The tension on the wire shall not exceed one half of its yield strength. This specification covers round wires and ribbons with controlled electrical properties made from magnetic and nonmagnetic class 1a alloys.
Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters. Temperature Coefficient of Resistance 8.
No further reproductions authorized. NOTE 1—When ribbon or? This standard is subject to revision at any time by the responsible technical committee and must be reviewed every? All of the information included in this note is based on measurements made in accordance with Test Method B The enamel shall not be underbaked so that one turn adheres to the next on a spool. This slope is determined from the following equation: Maximum indicates the maximum deviation from zero and the plus or minus sign the polarity of the couple.
The covering shall be sufficiently closely wrapped so that, when the wire is bent around a mandrel having a diameter ten times the overall diameter of the covered wire, using only enough tension to give an even compact layer, the wrappings will not open enough to make the wire underneath visible to the unaided eye. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
The nominal resistance per unit length for a round wire is calculated from the nominal resistivity and nominal cross-sectional area. It shall be free from voids or bare spots and have a minimum of back twist.
Historical Version s – view previous versions of standard. It is the responsibility of the user of this standard to become familiar with all hazards including those identi? D in Diameter in.