1、Beneficial comments, (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: Commander, Naval Sea Systems Command, ATTN 05Q, 1333 Isaac Hall Avenue SE, STOP 5160, Washington Navy Yard, DC 20376-5160. AMSC N/A FSC 8030 DIST
2、RIBUTION STATEMENT A. Approved for public release; distribution is unlimited. INCH-POUND A-A-59720 October 23, 2002 COMMERCIAL ITEM DESCRIPTION SEALING AND LOCKING COMPOUNDS, SINGLE-COMPONENT The General Services Administration has authorized the use of this Commercial Item Description, for all fede
3、ral agencies. 1. Abstract. This description covers requirements for single-component compounds and their primers suitable for sealing and locking metal parts. The compounds cure to an insoluable state when confined between closely fitting metal surfaces or when applied to surfaces treated with a com
4、patible primer. 2. Salient characteristics. Salient characteristics shall be in accordance with 2.1 through 2.4.2. Preproduction testing for compliance with all characteristics that require testing (2.1.1.2, 2.1.2 and 2.2 through 2.4.2) shall be performed on the current formulation and every time th
5、ere is a formulation change. Production testing of each batch is not required. However, production testing for compliance with 2.1.1.2 shall be performed every four years. Tests shall be conducted as specified on unpolymerized and polymerized compounds and, unless otherwise specified, shall be condu
6、cted at a temperature of 75F +/- 5F and a relative humidity of 50 +/- 5 percent. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-59720 2 2.1 Formulation. The locking compounds shall have nominal compositions in accordance with Table 1. Table 1 -
7、Nominal Composition of Locking Compounds and Primer Ingredients Weight Percentage Grades Compound AV Compound AVV Compound HT Primer PR-N Polyglycol dimethacrylate 80-85 60-65 - - Bisphenol A fumerate resin - 30-35 - - Saccharin - 1-3 0.1-1 Cumene Hydroperoxide 5-7 1-3 1-3 - N, N-Dialkytoluidines -
8、0.1-1 0.1-1 - Cellulose Ester 1-3 - - - Polyglycol dioctanoate 1-3 - - - Tributylamine 1-Aromatic dimethacrylate ester - - 75-80 - Maleimide resin - - 10-15 - Hydroxyalkyl methacrylate - - 1-3 - Methyl alcohol - - 1-3 - Silica, amorphous, fumed - - 1-3 - 1-Acetyl-2-phenylhydrazine - - 0.1-1 - Maleic
9、 acid - - 0.1-1 - 2-Ethylhexanoic acid - - - 0.1-1 Organo-copper compound - - - 0.1-1 Trialkylammonium Caboxylate - - - 0.1-1 Acetone - - - 95-100 2.1.1 Detrimental materials. 2.1.1.1 Prohibited materials. During the manufacturing processes, tests, inspections, and storage, mercury or mercury compou
10、nds shall not be intentionally added to or come in contact with the product at any time. 2.1.1.2 Chemical impurities. The amount of the following materials in the locking compound or primer shall not exceed the limits specified below when tested in accordance with 2.1.1.3 in the cured state: (a) Tot
11、al chlorides, bromides and fluorides shall each not exceed 0.0250 weight percent (250 ppm) (g/g). (b) Water leachable sulfur shall not exceed 0.0250 weight percent (250 ppm) (g/g). (c) Total antimony, bismuth, cadmium, lead, tin, zinc and phosphorus shall each not exceed 0.0250 weight percent (250 p
12、pm) (g/g). 2.1.1.3 Chemical impurities Test procedure. 2.1.1.3.1 Halogen content determination. 2.1.1.3.1.1 Halogen content (consisting of fluorine, chlorine, and bromine) shall be determined by decomposing the product using Parr Bomb or Pyro hydrolysis techniques and analysis of the residue by ion
13、chromatography, specific ion electrode, or spectrophotometric methods. Other equivalent methods may be utilized. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-59720 3 2.1.1.3.2 Water leachable sulfur test. 2.1.1.3.2.1 The water leaching test sh
14、all be performed as follows: a. Cut one specimen from the selected sample, weighing approximately 15 grams, and record its exact weight to 0.1 gram. The sample weight may be adjusted provided the ratio of sample weight to final volume of solution is maintained (i.e. 15g/500ml). b. Cut the specimen i
15、nto small pieces not greater than 1/4 inch in any dimension. c. Place the specimen in an 800 milliliter (ml) or larger beaker. d. Add approximately 400 ml of distilled water per 15 grams of sample weight to the beaker. e. Cover the beaker with a watch glass and heat for one hour minimum at 200-212F.
16、 f. Allow the beaker to cool to room temperature. g. Vacuum filter the leachate from the beaker separately through a prewashed filter (No. 41 Whatman or equivalent coarse porosity filter) and a Buchner funnel. Wash the beaker thoroughly with distilled water using ten or more washes and vacuum filter
17、 the wash solutions. Dilute the filtrate to 500 ml, or the appropriate volume to maintain a 15 g/500 ml ratio. h. If necessary, store the filtrate in a cleaned polyethylene or glass container covered to prevent evaporation. i. Prepare a control filtrate with no specimen following the instruction in
18、d through h. 2.1.1.3.2.2 Determination of leachable sulfur concentration. Using aliquots from the control filtrate and the sample filtrate in 2.1.1.3.2.1.g, determine the concentration of sulfur as follows: a. Place 25 ml of the filtrate in a 50 ml or larger clean beaker properly identified. b. Add
19、distilled water saturated with bromine drop by drop while stirring until a red-brown color persists. Then cover the beaker with a watch glass. c. Heat the solution in the covered beaker on a hot plate until the bromine color disappears. d. Allow the solution to cool to room temperature. e. Transfer
20、the solution to a volumetric flask and add distilled water rinses from the beaker to make up a final volume that is consistent with the sulfate test method. Determine the sulfate ion concentration of this final diluted volume using an appropriate method of ASTM D 516. f. Use the following formula to
21、 obtain the water-leachable sulfur concentration of the filtrate: Sulfur, g/g (ppm) = C X Vs X V X 0.334/(25.0 X M) Where: C = concentration of sulfate ion (SO42-) in filtrate, in milligrams per liter, determined in step e. Vs= final volume of solution in milliliters per 2.1.1.3.2.1.g V = milliliter
22、s of final diluted volume, and M = grams of the test specimen, prepared per 2.1.1.3.2.1.a 2.1.1.3.2.3 Ion chromatography analysis in accordance with ASTM D 4327 and inductively coupled plasma analysis are acceptable alternates for the ASTM leachate analysis of 2.1.1.3.2.2 specified above. 2.1.1.3.2.
23、4 The leachable sulfur concentration for primer shall be determined by testing the residue that is present after evaporation. The leachable sulfur concentration for compounds shall be determined with material that has been polymerized. 2.1.1.3.3 Analysis for metals and phosphorus 2.1.1.3.3.1 The ind
24、ividual concentrations of antimony, bismuth, cadmium, lead, tin, zinc and phosphorus shall be determined by atomic absorption, plasma emission, emission spectrographic or X-ray fluorescence methods, as appropriate. Other equivalent methods may be utilized. Provided by IHSNot for ResaleNo reproductio
25、n or networking permitted without license from IHS-,-,-A-A-59720 4 2.1.2 The compounds and the primer shall have been certified and assigned a “Limited” or “Permitted” usage category in accordance with the Nuclear Powered Submarine Atmosphere Control Manual (NAVSEA S9510-AB-ATM-010/(U). 2.1.3 The co
26、mpounds and primer shall not contain any Class I or Class II ozone depleting substances as designated by the Environmental Protection Agency in Code of Federal Regulations 40 (CFR) Part 82. 2.1.4 Locking compounds shall not be a Resource Conservation and Recovery Act (RCRA) hazardous waste in the un
27、used or used forms or generate a hazardous when being applied due to the mixture rule, except for PR-N. PR-N has the potential to generate hazardous waste. The EPA hazardous waste number for PR-N is D001 (Hazardous waste per 40CFR 261.21/Acetone). 2.2 Properties, unpolymerized. 2.2.1 Viscosity. The
28、unpolymerized compound shall have a viscosity within the range, as applicable, specified in Table 2, when tested as specified in 2.2.1.1. Table 2 - Unpolymerized Viscosity and Polymerized Prevailing Torque of Locking Compounds Grade Viscosity, centipoises (pascal-seconds) Prevailing Torque, in-lbs (
29、newton-meters) AV 100-250 (0.10-0.25) 100-250 (11.3-28.2) AVV 1,000-10,000 (1.0-10.0) 100-250 (11.3-28.2) HT 4,000-15,000 (4.0-15.0) 100 minimum (11.3 minimum) 2.2.1.1 The viscosity shall be determined by ASTM D445 or by method B of ASTM D1084. For ASTM D445 conversion to centipoises shall be made b
30、y multiplying the centistokes by the density of the compound. 2.2.2 Flash point. The unpolymerized compound shall have a flash point of not less the 200F (93C) when tested as specified in 2.2.2.1. 2.2.2.1 The flash point shall be determined with a tag closed tester using ASTM D 56. 2.2.3 Corrosivity
31、. The unpolymerized compound shall not be corrosive to steel, aluminum alloy, or brass when tested as specified in ASTM D 5363. 2.2.4 Storage stability. The unpolymerized compound packaged in original bottles shall not show excessive deterioration when stored for 10 days at 120F +/- 3F (48.9C +/- 1.
32、7C) and tested as specified in 2.2.4.1. 2.2.4.1 Five bottles of each size container shall be conditioned for 10 days at 120F +/- 3F (48.9C +/- 1.7C). After cooling to room temperature, the compound shall be tested for viscosity (see 2.2.1) and prevailing torque after normal curing (see 2.3.1). An in
33、crease in viscosity in excess of 50 percent, or failure of the compound to meet the prevailing torque specified in Table 2 shall constitute excessive deterioration. 2.2.5 Workmanship. The unpolymerized compound shall be smooth and homogeneous after shaking, free from lumps, caked material, and parti
34、cles of foreign matter when examined. 2.2.6 Ultraviolet fluorescence. Grades AV and AVV of the unpolmerized compound shall fluoresce under ultraviolet illumination when tested in accordance with ASTM D 5363. 2.3 Properties, polymerized. 2.3.1 Prevailing torque after normal curing. Prevailing torque
35、is the torque measured at 180 rotation of the nut when tested as specified in 2.3.1.1. The polymerized compound shall have an average prevailing torque within the range specified in Table 2. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-59720 5
36、 2.3.1.1 Prevailing torque shall be determined as specified in ASTM D 5649 using unplated, 3/8-inch size, 24 threads per inch, Unified National Fine thread series, Class 2 fit (3/8-24 UNF2) Grade 2 bolts in accordance with SAE J429. Nuts shall conform to Federal Specification FF-N-836. The bolts sha
37、ll have a minimum length of one inch. 2.3.2 Prevailing torque after immersion in solvents. The prevailing torque of each grade of compound shall not be less then the minimum value specified in Table 2 after immersion in the solvents specified in Table 3 when tested in accordance with in ASTM D 5363.
38、 The specimens used in the solvent resistance test shall be as specified in 2.3.1.1. The solvent resistance testing of grade HT shall be as specified in 2.3.2.1. Table 3 - Solvents and Applicable Solvent Specifications Solvent Applicable Solvent Specification Reagent water ASTM D1193 Isopropyl alcoh
39、ol ATM D 770 Automatic transmission fluid SAE J311b Unleaded gasoline ASTM D 439 Ethylene glycol ASTM D 2693 Jet reference fuel SAE AMS 2629 Lubricating oil1/2190TEP per MIL-L-17331Substitute ocean water1/ASTM D 1141 Note: 1/Grades AV and AVV are not required to be tested with lubricating oil and su
40、bstitute ocean water solvents. 2.3.2.1 For grade HT solvent resistance tests, prevailing torque shall be determined as specified in ASTM D 5649 using unplated, 3/8-inch size, 16 threads per inch, Unified National Course thread series, Class 2 fit (3/8-16UNC-2). Each bolt material specified in Table
41、4 shall be tested. The bolts shall have a minimum length of 1 inch. The prevailing torque shall not be less then the minimum value specified in Table 2 after immersion in the solvents specified in Table 3 when tested in accordance with in ASTM D 5363. The exceptions are that the minimum acceptable p
42、revailing torque is 75 in-lbs for 70/30 copper-nickel in ethylene glycol and transmission fluid and for titanium in lubricating oil. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-59720 6 Table 4 - Fastener Hardware for Grade HT Solvent Resistan
43、ce Tests Alloy Group Bolt Material Nut Material SAE J429 Grade 5 bolts Nuts to FF-N-836 Steel, AISI 4140 ASTM A193 Grade B7 ASTM A194, Grade 4 or Grade 7 Iron Base Alloys1/304 Stainless Steel ASTM F593, Group 1 304 Stainless Steel ASTM F594 Group 1 70/30 Copper Nickel ASTM B151, Alloy C71500 70/30 C
44、opper Nickel ASTM B151, Alloy C71500 Copper Base Alloys Nickel Aluminum Bronze ASTM B124 or B150, Alloy C63200 Nickel Aluminum Bronze ASTM B124 or B150, Alloy C63200 K-Monel QQ-N-286, Class A Monel 400 QQ-N-281, Class A Nickel Base Alloys Alloy 625 ASTM B446, Grade 1 Alloy 625 ASTM B446, Grade 1 Tit
45、anium Base Alloys1/Titanium ASTM B348, Grade 2 Titanium ASTM B348, Grade 2 Note: 1/Primer PR-N shall be applied to titanium and 304 stainless steel fasteners prior to application of the locking compound. 2.3.3 Speed of curing. The prevailing torque of each grade of compound after six hours of normal
46、 curing shall be not less than 50 percent, and after 24 hours not less than 100 percent of the minimum specified value in Table 2, when tested as specified in 2.3.1.1. 2.3.4 Hot Strength. The prevailing torque shall not be less than 60 percent of the minimum value specified in Table 2, after two hou
47、rs exposure; for grade AV to a temperature of 200 +/- 10F (93 +/- 5.5C), for grade AVV to a temperature of 300 +/- 10F (149 +/- 5.5C), and for grade HT to a temperature of 425 +/- 10F (218 +/- 5.5C). The testing shall be as specified in ASTM D5363. 2.3.5 Heat aging. The prevailing torque for each gr
48、ade of compound shall not be less than 50 percent of the minimum prevailing torque specified in Table 2 when grade AV and AVV are aged at 300 +/- 10F (149 +/- 5.5C) or grade HT is aged at 425 +/- 10F (218 +/- 5.5C) for 1000 +/- 2 hours and tested as specified in ASTM D 5363. 2.3.6 Low temperature to
49、rque. The prevailing toque at -65F +/- 2F (-53.9C +/- 1C) shall not be less than the minimum values specified in Table 2 when tested as specified in ASTM D 5363. 2.3.7 Fluid tightness. The compound shall be capable of making leak-tight assemblies when tested as specified in ASTM D 5657. 2.4 Primer properties. 2.4.1 Grade PR-N (speed of curing). Grade PR-N primer, when applied to unpolished and untreated cadm
