1、P MILT-4053B 20 AUGUST 1962 SUPERSEDING 5 OCTOBER 1951 MIL-T-4053A MILITARY SPECIFICATION TAPE, PRESSURE-SENSITIVE, ADHESIVE (CORROSION-RESISTANT) This specijcation has been approved by the Department of Defense and is man- datory for use by the Departments of the Army, the Navy, and the Air Force.
2、1. SCOPE 1.1 This specification covers one type of corrosion-resistant pressure-sensitive (glass cloth) tape for use in binding joints in low- pressure hot-air duct,s where the temperature does not exceed 350 F. 2. APPLICABLE DOCUMENTS 2.1 The following documents, of the issue in effect on date of i
3、nvitation for bids, form a part of this specification to the extent specified herein: SPECIFICATIONS FEDERAL QQ-A-267-Aluminum Alloy Bars, -Rods, and Shapes Extruded, 2024 QQ-A-268-Aluminum Alloy Bars, Rods and Wire, Rolled, Dram, and Cold Finished, 2024 uI-P-3l-Paper, Genera.1 Specifications and Me
4、thods of Testing WW-T-799-Tubing, Copper, Seamless (for Use with Soldered or Hared- Fittings) CCC-T-191-Textile, Test Methods and Supplements Thereto PPP-T-68O-Tape, Pressure Sensitive Ad- hesive: Packaging and Packing of MILITARY MIL-T-8504-Tubing, Steel, Corrosion- Resistant (18-8) Annea.led, Airc
5、raft Hy- draulic System. STANDARDS MZITARY MILSTD-1054ampling Procedures and Tables for Inspection by Attributes (Copies of specifications, standards, drawings, and publications required by contractors in connection with specific procurement functions should be obtained from the procuring activity o
6、r as directed by the contracting officer.) 3. REQUIREMENTS 3.1 Material. 3.1.1 Backing material. The tape backing shall consist of a high grade, plain weave glass cloth with a minimum thread count of 55 threads per inch in both warp and filling directions and shall be free from unsightly defects, di
7、rt, lumps, and other irregularities. 3.1.2 Adhesive The tape adhesive shall be thermosetting and pressure-sensitive and sha.ll require no moisture, heat, or other manner of preparation prior to application of the tape. The adhesive shall be a smooth, uniform coating covering the entire a.rea of one
8、side of the tape. The adhesive sha.ll not contain any halogen compounds that might cause corrosion of copper, aluminum, and ferrous a.lloy. 3.2 Physical properties. The physical properties of the tape shall be-in accordance with table I. TABLE I. Physical properties 3.3 Size. 3.3.1 Length. The tape
9、sha.ll be uniformly and smoothly wound in 60-yard rolls, with .the adhesive side in, on suitable cores having .an inside diameter of 3.00f0.0625 inches. .The cores shall have swflicient rigidity to prevent !? FSC .8030, i : Licensed by Information Handling ServicesProvided by IHSNot for ResaleNo rep
10、roduction or networking permitted without license from IHS-,-,-MIL-T-40538 BO MIL-T-4053B distortion of the roll under normal conditions of use. The tape shall be in one continuous strip, except that any single roll may contain not more than three splices, and the number of rolls having three splice
11、s in any one shipment shall not exceed 10 percent. The splices shall not separate upon unwinding. 3.3.2 Width. The width of the tape shall be 1 inch unless otherwise specified by the pro- curing activity (see 6.2). A tolerance of plus or minus j 1 inch tape shall be tested full width; and if the tap
12、e is less than 1 inch in width the strength shall be calculated by dividing the actual breaking strength by the width to convert the resulting answer to pounds per inch of width. 4.5.2 Thickness. The thickness of the tape shall be determined in accordance with Method 173 of Specification UKE“31, exc
13、ept that the tape shall be doubled with the adhesive side in and the thickness of these two layers of tape shall be divided by two to indicate the thickness of a single layer of tape. 4.5.3 Adhesion to steel. Adhesion to steel shall be determined in accordance with Method 100 of Specification UU“P-3
14、1. 4.5.4 Adhesion afer heating. Adhesion after heating shall be determined by the method specified in 4.5.3 for determining adhesion to steel, except that the plates with specimens at- tached shall be heated for 2 hours in an oven at a temperature of 174 to 180 C (345 to 355 F) and shall then be rem
15、oved and allowed to cool at room temperature 23 f1.1 C (70 to 75 I?) for 30 minutes prior to pulling. Failure of the backing material under load during the adhesion portion of this test shall be considered evidence that the adhesive strength is equal to the original. 4.5.5 corrosion. 4.5.5.1 Copper
16、and aluminum. One 6-inch length of %-inch copper tubing conforming to Specification WW-T-799, condition N, and one 6-inch length of %-inch diameter aluminum rod conforming to Specification QQ-A-267 or QQ-A-268, condition T, shall be polished with 150 grit, abrasive cloth or paper. The tubing ._ Prov
17、ided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- r and the rod shall then be spirally wound for approximately onehalf their length with tape overlapped by one-half the width of the tape. Specimens thus prepared shall then be sus- pended over water in a c
18、losed container for 144 hours at room temperature (23 rt 1 C (70 to 75 F). At the end of this exposure period, the tape shall be removed and the metal sur- faces examined visually for any pitting or other signs of corrosion. If the taped metal surfaces are corroded more than the bare metal surfaces,
19、 the tape shall be rejected. 4.5.5.2 Stainless steel. 4.5.5.2.1 Preparation of test specimens. A 10-inch length of tubing conforming to Specifi- cation MILT-8504, with 0.375 outside diam- eter and 0.035 inch wall thicbess, shall be bent on a tube bender to form a U-shaped test speci- men with a radi
20、us as shown on figure 1, and a dimension of 2.250f0.031 inches between the legs. Holes of KG-inch diameter shall be drilled in the tubing, a number 8-32, type 304 stain- less steel machine screw passed through the holes, and the open end of the tubing dram to the dimensions as shown on figure 1. The
21、 tub- ing shall be cleaned with ACS grade xylene. An area 1 inch on each side of the center of the curved portion of tubing shall be spirally mound with %ESS OTHERWISE SPECIFIED, TOIXRANCE: DECIMALS h016 FIGURE 1. Corrosion test specimen. (b) Width (see 3.3.2). (c) Quantity. (d) Applicable levels of
22、 packaging and (e) Whether individual roll or multiple (f) Whether or not a cye liner is required. (g) Whether intermediate packaging is re- Notice: When Government drawings, speci%ations, or other data are used for any pypose other than. in connection with a definitely related Government pro- curem
23、ent operation, the United States Government packing (see 5.1). roll packa,.ig is desired. quired. .4 thereby incurs no responsibility nor any obligation whataoever; and the fact that the Government may have formulated, furnished, or in any way supplied the said drawings, specifications, or other dat
24、a is not to be regarded by implication or otherwise aa in any manner licensing the holder or any other person or corporation, or conveying any rights or permission to manufacture, use, or sell any patented invention that may in any way be related thereto. Custodians: Armp-CE Navy-Wep Air Force-AFSC Preparing activity: -. Air Force-AFSC U.8. BOVERHYEHT PRlNTlW OPPICLtI962 “ - . 11 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
