ASTM F4-66(1999)

Standard Specification for Carbonized Nickel Strip and Carbonized Nickel-Plated and Nickel-Clad Steel Strip for Electron Tubes

SCOPE
1.1 This specification covers carbonized nickel strip and carbonized nickel-plated and nickel-clad steel strip for use 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-Dec-1999
• 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 F4-66(2005) - Standard Specification for Carbonized Nickel Strip and Carbonized Nickel-Plated and Nickel-Clad Steel Strip for Electron Tubes (Withdrawn 2010)
• Effective Date: 01-Jan-2005

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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 4 – 66 (Reapproved 1999)
Standard Specification for
Carbonized Nickel Strip and Carbonized Nickel-Plated and
Nickel-Clad Steel Strip for Electron Tubes
This standard is issued under the fixed designation F 4; the number immediately following the designation indicates the year of original
adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.Asuperscript
epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope 4.4 Edge—The edge shall be such as would result from a
standard slitting operation.
1.1 This specification covers carbonized nickel strip and
4.5 Burr—The burr shall not exceed one half the strip
carbonized nickel-plated and nickel-clad steel strip for use in
thickness or 0.0025 in. (0.064 mm) whichever is smaller, as
electron tubes.
measured in accordance with the procedure described in the
1.2 The values stated in inch-pound units are to be regarded
Appendix of Specification F1.
as the standard. The metric equivalents of inch-pound units
may be approximate.
5. Workmanship, Finish, and Appearance
2. Referenced Documents 5.1 The surface shall be free of any lubricant used in
processing. The appearance of the carbonized strip shall be
2.1 ASTM Standards:
uniform.
F 1 Specification for Nickel-Clad and Nickel-Plated Steel
5.2 Other appearance characteristics shall be defined as
Strip for Electron Tubes
agreed upon by the producer and the consumer.
F 3 Specification for Nickel Strip for Electron Tubes
F155 TestMethodforTemperofStripandSheetMetalsfor
6. Test for Carbon Loss
Electronic Devices (Spring-Back Method)
6.1 Testing for carbon loss by firing of carbonized materials
3. Temper covered by this specification shall be conducted in such a
manner as to ensure an acceptable standard of quality for
3.1 The temper of the strip shall conform to limits agreed
operation in electron-tube applications.
upon by the producer and the consumer, and shall be deter-
6.2 The materials being tested shall be protected by the use
mined in accordance with Test Method F155.
of a suitable covered boat, so as to prevent direct radiation
4. Dimensions, Mass and Permissible Variations
from the furnace heating elements or direct impingement of
gas.
4.1 Thickness—The thickness of the material shall conform
6.3 The cooling section of the furnace shall contain the
to the following tolerances:
same atmosphere as that in the hot zone.
Thickness, in. (mm) Thickness, Tolerance, in. (mm)
Under 0.010 (0.25) 60.0005 (0.013) 6.4 The furnace atmosphere shall consist of pure hydrogen
0.010 to 0.020 (0.25 to 0.5), incl 60.0008 (0.020)
or25%nitrogenand75%hydrogen,andshallhaveamoisture
content no greater than saturation at−45°C. The maximum
Thethicknessshallbemeasured0.375in.(9.5mm)fromthe
oxygen content of the furnace atmosphere shall be 0.001% by
edge on 1-in. (25.4-mm) or wider strip, or at any point on
volume.
narrower strip.
6.5 The firing temperature shall be 850 6 10°C. The firing
4.2 Width—Forstriplessthan3.0in.(76mm)wideandless
time shall be 9 6 1 min at temperature for carbonized nickel,
than 0.020 in. (0.51 mm) thick, the width tolerance shall be
for both classes of carbonized nickel-clad steel, and for
60.005 in. (0.13 mm).
carbonized nickel-plated steel, Type II; an
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