1、 MIL-C-82594 80 9979706 OLL0873 O m MI L-C- 82594 - 15 SeptemSer 1971 See Section 6 MILITARY SPECIFICATION CORROSION PREVENTIVE COMPOUND .UD SURFACE SEALER FOR NONFERROUS METALS This specificatior; is mandatorJ9 for use by all Depart- nlertts atld Agetlcies of the Department of Defense. 1. SCOPE 1.1
2、 Scope. This specification covers a solvent-dispersed compound which penetrates metal pores and forms a microthin, clear, protective coating, and seal to prevent corrosion when applied by aerosol, brush, dip, or spray to nonferrous metals. 1.2 Classification. The corrosion preventive compound and su
3、rface sealer shall be of the following types, as specified (see 6.2). Type I Type II Aerosol application Brush, dip, or spray application 2. APPLICABLE DOCUMENTS 2.1 The following documents of the issue in effect on date of invita- - tion for bids or request for proposal, form a part of this specifi
4、cation to the extent specified herein. SPECIFICATIONS Federal QQ-Z-325 Zinc Coating, Electrodeposited, Requirements for QQ-A- 32 7 Aluminum Alloy, Plate and Sheet 6061 QQ-A- 355 QQ-P-416 Aluminum Alloy, Plate and Sheet 2024 Cadmium Plating (Electrodeposited) Provided by IHSNot for ResaleNo reproduct
5、ion or networking permitted without license from IHS-,-,-MIL-C-82594 TT-E-485 PPP-C-96 PPP-D-729 PPP-P-704 bli 1 i tary JAN-H- 792 MIL-E-5272 MIL-C-5541 MIL-A-8625 STANDARDS Federal FED-STD- 141 Militan Enamel, Semi-Gloss, Rust-Inhibiting Cans, Metal, 28 Gage and Lighter Drum, Metal, 55-Gallon (for
6、Shipment of Non-Corrosive Material) Pail, Shipping, Steel (1 through 12 gallons) Humidity-Cabinet, Operation of Environmental Testing, Aeronautical and Associated Equipment, General Specification for Chemicals Films and Chemical Film Materials for Aluminum and Aluminum Materials Anodic Coatings for
7、Aluminum and Aluminum Alloys Paint, Varnish, Lacquer and Related Materials, Methods of Inspection, Sampling and Testing MIL-STD-105 Sampling Procedures and Tables for Inspection by Attributes MIL-STD-129 Marking for Shipment and Storage e I MIL-STD-1341 Symbols for Packages and Containers for Hazard
8、- ous Industrial Chemicals anb Materials (Copies of specifications, standards, drawings, and publications -required by suppliers in connection with specific procurement functions should be obtained from the procuring activity or as directed by the contracting officer.) 2.2 Other publications. The fo
9、llowing dcument forms a part of this specification to the extent specified herein. Unless otherwise indicated, the issue in effect on date of invitation for bids or request for proposal shall apply. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL
10、-C-82593 (Application for copies should be addressed to the American Society for Testing and Materials , 1916 Race Street, Philadelphia, Pa. 19103.) 3. REQU I RElrlENTS 3.1 First article inspection. The corrosion preventive compound and surface sealer furnished under this specification shall be a pr
11、oduct which has been inspected and passed the first article inspection speci- fied herein (see 4.3 and 6.2.1). 3.2 Material. The corrosion preventive compound and surface sealer, hereinafter referred to as ttcompound,tt shall be composed of a base mate- rial dispersed in solvent so as to form a flui
12、d formulation conforming to this specification. The compound shall not be injurious in any way to personnel using.it, if reasonable procedures and safety precautions are used. 3.3 Appearance and film thickness, The compound when applied in accordance with 4.4.1 shall form a microthin, uniform, clear
13、 film. Film thickness when measured in accordance with 4.5.2 shall not exceed 0.0003 inch. 3.4 Sprayability, The flow rate at 40“ Fahrenhei-t from a fully pres- surized container for type I or from a commercially available pressure- type container for type II shall be not less than 1.0 gram per seco
14、nd when tested in accordance with 4.5.3. The compound shall be readily sprayable so as to provide a uniform and continuous film after subjecting a fully pressurized container (type I) or a full container (type II) to 40“ Fahrenheit for a period of 24 hours. 3.5 Curing. Upon application, the compound
15、 shall dry to touch in 3 minutes maximum at 70“ Fahrenheit. The compound shall obtain full cure with complete physical properties in 8 days at 70“ k 5“ Fahrenheit or in 5 to 10 minutes at 350“ to 500 Fahrenheit. . Provided by IHSNot for ResaleNo reproduction or networking permitted without license f
16、rom IHS-,-,-1 MIL-C-82594 3.6 Coverage. 3.6.1 Type I. The contents of a 10-ounce spray container shall be sufficient to coat 75 square feet when applied, using the spraying method specified in 4.5.1.4. 3.6.2 Type II. The contents of a 1-gallon container shall be suffi- cient to coat 3000 square feet
17、 minimum, when applied, using the dip method specified in 4.5.1.4. 3.7 Flash point. The compound shall not flash at temperatures under 85“ Fahrenheit when tested in accordance with 4.5.5. 3.8 Corrosion resistance. The compound shall afford protection against the environmental conditions of humidity
18、and salt spray. There shall be- no evidence of pitting, etching, or corrosion when tested in accordance with 4.5.6 and 4.5.7. 3.9 Fungus resistance. The compound shall resist fungus when tested in accordance with 4.5.8. 3.10 Heat resistance, The compound shall resist temperature extremes ranging fro
19、m -100“ to 500“ Fahrenheit when tested in accordance with 4.5.9. 3.11 Flexibility. The compound shall be flexible and show no evidence of cracking, peeling, flaking, or lifting when tested in accordance with 4.5.10. 3.12 Paint adhesion. The compound shall provide adhesion for paints. There shall be
20、no evidence of paint peeling, flaking, or lifting when tested in accordance with 4.5.11. 3.13 Storage life. The compound shall be certified by the supplier as having a storage life of at least 36 months from the time of delivery when stored unopened at a temperature of 40“ to 90“ Fahrenheit. . 4 Pro
21、vided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-82594 4, QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection. Unless otherwise specified in the contract or purchase order, the supplier is responsible for the perform- ance of all inspect
22、ion requirements as specified herein. Except as otherwise specified in the contract or order, the supplier may use his own or any other facilities suitable for the performance of the inspec- tion requirements specified herein, unless disapproved by the Government. The Government reserves the right t
23、o perform any of the inspections set- forth in this specification where such inspections are deemed necessary to assure that supplies and services conform to prescribed requirements, 4.2 Classification of inspection. The inspection of the compound shall be classified as follows: (a) First article in
24、spection (see 4.3) (b) Quality conformance inspection (see 4.4). 4.3 First article inspection. Unless otherwise specified (6.2.1) , the contractor shall produce a first article or preproduction lot of the compound at the same plant, using the same materials and processes that he proposes to use in f
25、ulfilling the contract. First article samples selected in accordance with 4.3.1, shall be subjected to all quality conformance examinations and t.ests specified herein. Failure of the samples to meet all the requirements shall he cause for rejection of the first article sample. 4.3.1 Sampling for fi
26、rst article inspection. The samples for each type of compound shall be forwarded for analysis to the laboratory desig- nated by the procurement activity. -1.3.1.1 Type I. Six containers of type I compound, prepared as speci- fied in 5.1.1, shall be selected from the first quantity produced for first
27、 article lot. These containers shall be in addition to the quantity on order. 4.3.1.2 Type II. A 1-gallon sample of the compound shall be selected from the first quantity produced for first article lot and placed in a clean, dry, metal container with the top sealed. The container shall be in additio
28、n to the quantity on order. S Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-82594 4.4 Quality conformance inspection. Quality conformance inspection shall consist of all the examinations and tests specified in table I. Table I QUALITY CONFORM
29、ANCE INSPECTION Examination .or tests Fi lm th i cknes s Sprayability Curing Coverage Type I application Type II application Flash point Corrosion resistance Humidity Salt spray Fungus Heat resistance Flexibility Paint adhesion Visual 4.4.1 Sampling. Requirement 3.3 3.4 3.5 3.6.1 3.6.2 3.7 3.8 3.8 3
30、.9 3.10 3.11 3.12 5. Test method 4.5,2 4.5.3 - 4.5.4 - 4.5.5 4.5.6 4.5.7 4.5.8 4.5.9 4.5.10 4.5.11 4.4.4 4.4.1.1 Inspection lot. For the purpose of sampling, an inspection lot of type I compound shall consist of not more than 1200 filled con- tainers, An inspection lot of type II compound shall cons
31、ist of one production batch but shall not exceed 5000 gallons. 4.4.1.2 Samples. 4.4.1.2.1 Type I. Unless otherwise specified by the procuring activity, at least six containers of the compound from each inspection lot shall be sklected at random, certified by the manufacturer as complying with the re
32、quirements set forth herein, and gorwarded for check analysis to the test laboratory designated by the pr.3curement activity concerned, 4.4.1.2.2 Type II. Unless otherwise specified by the procuring activity, a 1-gallon sample of the compound from each inspection lot shall be selected at random and
33、placed in a clean, dry, metal container with the top sealed and forwarded to the test laboratory designated by the procurement activity concerned. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-82594 4.4.2 Rejection. If any sample fied in 4.5,
34、 it shall be cause for the sample. fails to pass any of the tests speci- rejection of the lot represented by 4.4.3 Examination of containers. A random sample of filled containers shall be selected in accordance with MIL-STD-105 to verify compliance with the requirements of this specification not req
35、uiring tests. Each sample-filled container shall be examined for defects of construction of the container and the closure, for evidence of leakage, and unsatisfactory marking, Each filled container shall also be weighed and the amount of its contents determined, Any container in the sample having on
36、e or more defects or under required fill, shall be cause for rejection. 4.5 Test mocedures . 4.5.1 Preparation of test panels. 4.5.1.1 Precautions. The following precautions shall be observed in carrying out the cleaning and finishing procedures. (a) The utensils and cloths used in the preparation o
37、f the test panels shall be clean and free of contamination. Solvents shall be clean and renewed frequently. (b) In all stages of treatment beginning with step (a), handling of equipment with bare hands shall be avoided. The panels shall be handled with hooks or similar devices, care being taken to p
38、revent contact of the panels with contaminated surfaces during the cleaning or marring the film during coating and subsequent handling. Specimens on which the film has been damaged by handling shall not be used for test purposes. 4.5.1.2 Panel composition and size. Panels shall be fabricated from ba
39、re no. 6061 aluminum (QQ-A-327), bare no. 2024 aluminum (QQ-A-355), cadmium-plated steel (QQ-P-416), and zinc-coated steel (QQ-2-325). The panels shall be 1/8 x 2 x 4 inches. 4.5.1.3 Panel cleaning, The panel test surfaces shall be cleaned and finished as follows : (a) Round off all edges of the pan
40、els to a smooth surface. (b) Ream out holes used for suspension of the panels. (c) The test surface shall be smooth and free of scratches. (e) Chemically treat as required by table II. -. (d) Hot vapor degrease. 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license f
41、rom IHS-,-,-Table II FIVE PERCENT SALT SPRAY TEST letal ?io. 2024 aluminum Xo. 2024 aluminum No. 6061 aluminum No. 6061 aluminum Cadmium-plated steel class 1, type I Cadmium-plated steel class 1, type II Zinc- coated s tee1 class 2, type II Surface condition Compound on ly Per MIL-C-5541, class 1, w
42、ith compound Compound only Per MIL-A-8625, type II, with compound Compound only Dichromate treatment with compound Dichromate treatment with compound Length of test (hoc.rs) 168 500 500 1000 336 80 O 500 4.5.1.4 Application of compound. Type I compound shall be applied by spraying to the point of ru
43、noff to both sides of the panels held verti- cally, Care shall be taken to insure that all panel edges are coated. Film on center portion of panel shall not be touched or disturbed in any way. Type II compound shall be applied by dipping panels held vertically into the compound and withdrawing slowl
44、y. Procedures shall be Performed at an ambient temperature of 77“ If. 2“ Fahrenheit and a relative humidity of 45 t 5 percent. Coated panels shall be dried in a draft-, dust-, and fume-free atmosphere and cured for 8 days at 73“ If. 5“ Fahrenheit and 45 ? 5 percent relative humidity or for 5 to 10 m
45、inutes at 350“ to 500“ Fahrenheit. 4.5.2 Film thickness. The film thickness produced by the compound shall be determined in accordance with method 6181 of FED-STD-141. 4.5.3 Sprayability. 4.5.3.1 Type I. A fully filled pressurized container shall be placed in a suitable cold chamber and held at a te
46、mperature of 40“ f 2“ Fahren- heit for a period of 24 hours. At the end of this period and while still -“ R Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-82594 at 40 Fahrenheit a determination shall be made of the discharge rate from the cont
47、ainer by the following formula: iteight of filled Weight of container after Discharge rate - container (in grams) - partial discharge (in grams) (grams/second) - Time of discharge (in seconds) The time of discharge shall be that required to discharge approximately 30 grams of compound. Spray some of
48、 the compound on a vertically- positioned glass plate a: a distance of about 12 inches moving the nozzle at a rate of about 1 inch per second, allow to dry 24 hours, and examine film for evenness and continuity. 4.5.3.2 Type II. A commercially available pressure-type spray gun shall be filled. one-h
49、alf to two-thirds full with the compound under test, placed in a suitable cold chamber, and held at a temperature of 40“ F 2“ Fahrenheit for a period of 24 hours. At the end of this period, while still maintained at the temperature, a determination shall be made of the fluid flow rate from the gun, using a pressure of 35 f 3 pounds per square inch, gage (psig), on the fluid container, For this determina- tion, the atomizing
