1、MIL-A-4614bB (3) m 9999906 L348856 255 W NOT MEASUREMENT SENSTIVE MIL-A-46146B AMENDMENT 3 28 October 1992 SUPERSEDING AMENDMENT 2 21 January 1992 MILITARY SPECIFICATION ADHESIVES-SEALANTS, SILICONE, RN, NONCC )RROS IVE (FOR USE WITH SENSITIVE METALS AND EQUIPMENT) This amendment forms a part of MIL
2、-A-46146B, dated 21 November 1990 and is approved for use by all Departments and Agencies of the Department of Defense PAGE 5 3.3.2.1.1: Delete and substitute: “3.3.2.1.1 Heat resistance. The cured silicone adhesive-sealant or Group I and Group II after exposure for 168 + 4 hours (7 days + 4 hours)
3、at 392 + 4OF (200 + 2OC) shall meet the requirements for hardness, tensile strength and elongation as specified in table II when tested as specified in 4.5.3.1.2, except that the tensile strength and elongation for Group II material shall be 250 psi (min) and 300 percent (min), respectively. Grbup I
4、II material after exposure for 72 + 4 hrs (3 days 4 hrs) at 600 + 4OF (316 + 2OC) shall have a hardness, Shore A (Durometer) of 60 max, tensile strength of 200 psi, min (1379KPa) and elongation of 100% min.“ AMSC No. A5033 1 of 4 FSC 8040 DISTRIBUTION STATEMENT A Approved for public release; distrib
5、ution unlimited. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-AMENDMENT 3 PAGE 12 “TABLE VI. Qualitv conformance inspection. Test Characteristic Group I Requirements Group II Group III 1 Method Test I Total solids content , 3.3.1 Application rate
6、i 3.3.1 Flow j 3.3.1 1 Viscosity “- I Tack free time 3.3.1 Corrosion I/ a/ 3.3.1.1 (a) I l I ! 3.3.1 I 3.3.1 1 4.5.3.2.1 j3.3.1 4.5.3.2.2 ! 4.5.3.2.3 3.3.1 1 - i ASRl D1084 i I Method B I 3.3.1 3.3.1 i 4.5.3.2.5 3.3.1.1 (a) 3.3.1.1 (a), 4.5.3.2.6.1 “_ i3.3.1 I i I Cured compound GrouDs 1 - 111 Hardn
7、ess Tensile strength Elongation 3.3.2.1 3.3.2.1 3.3.2.1 Peel strength ! 3.3.2.1 Dielectric strength 2/ I I l 3.3.2.2 j ASRl D2240 ASRl D412 (Die C) ASRl D412 (Die C) 4.5.3.2.7 ASRl D149 l. l i l 1 1/ When authorized by the procuring activity shipment may be made prior to the completion of the corros
8、ion test upon receipt of a letter (see 4.5.3.2.9) certifying that the sealing adhesive-sealant shall meet the corrosion test requirements of 3.3.1.1 a. - 2/ Quality conformance inspection, for corrosion and dielectric strength, on lots of silicone adhesive-sealant, which are run in a continuous basi
9、s, shall be made at least every four months during manufacturers test inspect ion. “ PAGE 18 5.3: Delete and substitute: “5.3 Marking. In addition to any special marking required by the contract or order herein, interior and exterior shipping containers shall be marked in accordance with MIL-STD-129
10、 for military levels of protection. A label shall be attached to each exterior container of silicone adhesive-sealant and primer (if required) with additional data as follows: (a) Number and title of this specification. (b) Adhesive-sealant group and type. (c) Dates of manufacture and reinspection.
11、2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-I MIL-A-4bL46B (3) m 9999906 1348858 028 m AMENDMENT 3 I PAGE 18 (d) Cure time if other than that specified (see 4.5.2.2). (e) WARNING: relative to toxicity (see 3.5). (f) WARNING: as to fluid resista
12、nce (see 6.1.1) (8) Label attached to containers of silicone adhesive-sealant shall contain application instructions for adhesive-sealant and primer (see 3.4). “CAUTION: APPLY ONLY IN A WELL VENTILATED AREA. KEEP AWAY FROM HEAT, SPARKS, AND OPEN FLAME“ RESULT IN ADHESION FAILURE.“ (h) Each unit cont
13、ainer of primer shall be marked as follows: (i) WARNING: FAILURE TO USE RECOMMENDED PRIMER ON SOME METALS MAY PAGE 21 6.9 Supersession dafa. This specification supersedes the following military specifications: a. MIL-A-46146A(l) 13 March 1991 b. MIL-R-47211A(MI) 21 September 1989 - Type III only PAG
14、E 22 Table VIII: Delete and substitute: Group Code Type Code Size Code + Color Code! Required Code “ . .“ “4 - . - - i -._I l “TABLE VIII. Militarp part number coding. ! . “. “_ _ . . . . . . . . . -. . . . . . . . . . . . - - . . . . . . “ -. . . - . . . . . -. . Container 1, I Primer -“I I l I 1 I
15、 1 1 3 oz tube A Gray G I III 3 6 oz cartridge C Translucent T No N , II 2 II 2 1 5 oz tube B White W Yes Y ! 1 50 ga 12 oz cartridge D pint E 5 gallon pail F llon drum G _ Example: M46146 1 1 A W Y I Color (White) L- Container Size (3 oz tube) i I Type (1) .J _ Group (I) Specification Identificatio
16、n“ 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MLL-A-4b14bB (3) m 77779Ob 1348857 Tb4 D AMENDMENT 3 PAGE 24 “TABLE IX. Comarison data for revision A to revision B Revision A 1 - Revision B Group I - General Purpose Type 1 Type I - Thixotropic p
17、aste Type II Type II - Self-leveling liquid Type III - High Strength Non-corrosive Group II - High Strength Type I - Thixotropic paste Type II - Self-leveling liquid I 1 Group III - High Temperature Type I - Thixotropic paste TvDe II - Self-leveling liauid MIL-R-4721lA(MI) Type III 11 Custodians : N
18、avy - AS Air Force - 11 Amy - MR Review activities: Amy - AR, ME, AT, MI, SM, EA Navy - AS, SH, OS Air Force - 11, 99 User activities: Army - CE, MI, AL Navy - OS, SH, YD GSA-FSS - lOFTE Preparing activity: Army - MR Project 8040-0527 WP# ID-0815A/DISC-O026A. FOR MTL USE ONLY. k Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
