ASTM F3-99

Standard Specification for Nickel Strip for Electron Tubes

SCOPE
1.1 This specification covers nickel strip for use as cathodes or other elements in electron tubes.  
1.2 The values stated in inch-pound units are to be regarded as the standard. The metric equivalents of inch-pound units may be approximate.

General Information

• Status: Historical
• Publication Date: 09-Jan-2002
• ICS: 31.100 - Electronic tubes
• ICS: 77.150.40 - Nickel and chromium products
• Technical Committee: F01 - Electronics
• Drafting Committee: F01.03 - Metallic Materials, Wire Bonding, and Flip Chip

Relations

• Replaced By: ASTM F3-02 - Standard Specification for Nickel Strip for Electron Tubes
• Effective Date: 10-Jan-2002

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or
withdrawn. Contact ASTM International (www.astm.org) for the latest information.
Designation: F 3 – 99
AMERICAN SOCIETY FOR TESTING AND MATERIALS
100 Barr Harbor Dr., West Conshohocken, PA 19428
Reprinted from the Annual Book of ASTM Standards. Copyright ASTM
Standard Specification for
1
Nickel Strip for Electron Tubes
This standard is issued under the fixed designation F 3; the number immediately following the designation indicates the year of original
adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A superscript
epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope 4. Dimensions, Mass and Permissible Variations
1.1 This specification covers nickel strip for use as cathodes 4.1 Strip up to and including 0.020 in. (0.51 mm) is covered
or other elements in electron tubes. by this specification.
1.2 The values stated in inch-pound units are to be regarded 4.2 Strip over 0.020 in. (0.51 mm) is covered by Specifica-
as the standard. The metric equivalents of inch-pound units tion B 162.
may be approximate. 4.3 Thickness—The thickness shall conform to the toler-
ances of Table 1.
2. Referenced Documents
4.4 Width—The width, as slit, shall conform to the toler-
2.1 ASTM Standards:
ances of Table 2.
2
B 162 Specification for Nickel Plate, Sheet, and Strip 4.5 Edgewise Bow—The edgewise bow shall be no more
3
E 39 Test Methods for Chemical Analysis of Nickel
than 0.5 in (13 mm) in 8 ft (2.4 m).
E 107 Test Methods for Chemical Analysis of Electronic 4.6 Edge—The edge shall be such as would result from a
4
Nickel
standard slitting operation.
E 129 Test Method for Spectrographic Analysis of Thermi- 4.7 Burr—The burr shall not exceed one half the strip
4
onic Nickel Alloys by the Powder Technique
thickness or 0.0025 in. (0.064 mm), whichever is smaller.
F 1 Specification for Nickel-Clad and Nickel-Plated Steel
5 5. Chemical Requirements
Strip for Electron Tubes
F 16 Test Methods for Measuring Diameter or Thickness of 5.1 The chemical composition of nickel strip used for
5
Wire and Ribbon for Electronic Devices and Lamps cathodes shall be as prescribed in Specification F 239. For
F 155 Test Method for Temper of Strip and Sheet Metals for approved test methods, see 7.5.
6
Electronic Devices (Spring-Back Method) 5.2 Nickel strip used for elements other than cathodes shall
F 239 Specification for Nickel Alloy Cathode Sleeves for conform to the requirements of Table 3 as to chemical
7
Electron Devices composition, or as specified in Specification F 239, if desired.
5.3 The choice of grade for specific applications shall be
3. Physical Requirements
agreed upon between the producer and consumer.
3.1 Temper—The temper shall conform to limits agreed
6. Sampling
upon by the producer and consumer when determined in
accordance with Test Method F 155. 6.1 Unwind required sample strip from each coil selected
3.2 Finish—The surface shall be as smooth and free of for inspection in such a manner that bending, twisting, and any
oxide, pits, scratches, seams, slivers, streaks, stains, scale, other distortion is prevented.
blisters, edge cracks, trimming burrs, and other defects or 6.2 If coil construction will permit, it is recommended that
contaminants, as best commercial practice will permit when samples from coils of material be taken from both ends.
examined under 103 magnification.
7. Test Methods
7.1 Thickness—On material 0.004 in. (0.10 mm) and under
in thickness, make six measurements at least 1 m apart in
1
This specification is under the jurisdiction of ASTM Committee F-1 on
accordance with Test Methods F 16 or with any equivalent
Electronics and is the direct responsibility of Subcommittee F01.03 on Metallic
method directly readable and accurate to 60.5 % of strip
Materials.
Current edition approved Jan. 10, 1999. Published March 1999. Originally
thickness. On 1-in. (25-mm) or wider strip, or at any point on
published as F 3 – 57. Last previous edition F3–95.
narrower strip, make all measurements about 0.4 in. (10 mm)
2
Annual Book of ASTM Standards, Vol 02.04.
3 from the edge.
Discontinued; see 1994 Annual Book of ASTM Standards, Vol 03.05.
4
Annual Book of ASTM Standards, Vol 03.05.
NOTE 1—An alternative method of determining strip thickness by
5
Annual Book of ASTM Standards, Vol 10.04.
weighing is suggested in Appendix X1.
6
Discontinued 1985, see 1983 Annual Book of ASTM Standards, Vol 10.04.
7
Discontinued 1992, see 1991 Annual Book of ASTM Standards, Vol 10.04.
1

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F3
TABLE 1 Thickness Tolerances
material. Measure any deviation from straightness at the
Thickness, in. (mm) Thickness Tolerance, in. (mm) maximum distance of the material from the straightedge by
1
A
means of a scale graduated in ⁄16 in. or 1 mm and read to the
Up to 0.004 (0.10), 65 % of over-all thickness, but not less
...