1、MIL-C-40084C 80 M 7797906 0434784 7 m. .8 June 1990 SUPERSEDING MIL-C-40084B 7 January i980 MILITAHY SPECIFICATION CORROSION PREVENTIVE COMPOUND, WATER-EMULSIEIABLE, OIL TYPE This specification is approved for use by all Depart- ments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. Th
2、is specification covers a fire-resistant, .I water-emulsifiable, oil type corrosion preventative compound to be used as a rust inhibiting coating. 2. APPLICABLE DOCUMENTS 2.1 Government documents. 2.1.1 Specifications, standards, and handbooks. The following specifications, standards, and handbooks
3、form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those listed in the issue of the Department of Defense Index of Specifications and Standards (DODISS) and supplement thereto, cited in the solicitation (see 6.2) SPECIFICATIONS
4、FEDERAL O-C-291 * - Chloroform, Technical O-bl-232 - Methanol (Methyl Alcohol) QQ-A-250/1 - Aluminum 1100, Plate and Sheet QQ-C-576 - Copper Flat Products with Slit, Slit and Edge-Holled, Sheared, Sawed or Machined Edges (Plate, Bar, Sheet and Strip) QQ-P-416 - Plating, Cadmium (Electrodeposited) QQ
5、-S-698 - Steel; Sheet and Strip, Low Carbon RR-S-366 - Sieve, Test TT-N-95 - Naphtha, Aliphatic . Beneficial comments (recommendations, additions; deletions) and any pertinent data which may be of use in improving this document should be addressed to: Director, U.S. Army Laboratory Command, Material
6、s Technology Laboratory, ATTN: SLCMT-MEE, Watertown, MA O2l72-OOOl by using the Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter., AMSC N/A FSC 8030 DISTRIBUTION STATEMENT A Approved for public release; distribution unlimited. Licensed b
7、y Information Handling ServicesMIL-C-40084C 80 9 9999906 0434985 9 9 MIL-C-40084C MILITARY MIL-P-116 - Preservation, Methods of DOD-P-16232 - Phosphate Coatings, Heavy, Manganese or Zinc Base (for Ferrous Metals) STANDARDS FEDERAL FED-STD-1 - Pain , Varnish Lacquer -and Related Materials, Methods of
8、 Inspection, Sampling and Testing Submfssion of Methods of Testing FED-STD-313 - Material Safety Data Sheets Preparation and the FED-STD-791 - Lubricants, Liquid Fuels and Related Products; MILITARY MIL-STD-129 - Marking for Shipment and Storage MIL-STD-290 - Packaging, of Petroleum , 72-1750F (220-
9、790C). After storage, there shall be no evidence of a 3.3.2 Salt tolerance. When tested as in 4.3.4.2, the emulsion shall remain homogeneous for 24 hours after saturated sodium chloride is added. After storagae at 77OF (25OC) there shall be no evidence of a complete oil ring formed on the surface, n
10、or any other evidence of phase separation. However, a slight oil film or creaming will be permitted. 3.3.3 Sensitivity to hydrogen ion concentration. When tested as in 4.3.4.3, the emulsion shall remain homogeneous when its hydrogen ion concentration is varied between pH 11 and pH 3. After storage a
11、t 77OF (25OC) there shall be no evidence of a complete oil ring formed on the surface, nor any other evidence of phase separation. film or creaming will be permitted. However, a slight oil 3.3.4 Corrosion protection. 3.3.4.1 Humidity protection. When tested as specified in 4.3.4.4.1, the emulsion sh
12、all be capable of protecting metal parts against corrosion during continuous moisture condensation on the parts at temperatures up to 1200F (49OC). using a 1 to 10 water emulsion. The adequacy of the compound for this purpose shall be determined 3.3.4.2 Salt-spray protection. When tested as specifie
13、d in 4.3.4.4.2, the emulsion shall be capable of protecting parts against corrosion during continuous moisture condensation caused by a 20 percent sodium chloride solution at a temperature of 95OF (350C). 3.3.4.3 Wetting property, When tested as specified in 4.3.4.4.3, the emulsion shall be capable
14、of protecting metal parts against corrosion in the presence of contamination caused by oil or grease at temperatures up to 18003 (82OC) . 3.3.4.4 Corrosion stain. When tested as specified in 4.3.4.4.4, the emulsion shall not contain agents or inhibitors which will stain polished metal surfaces. and
15、stain during compressed contact at temperatures up to 1800F (820C). The emulsion shall be capable of protection against corrosion 3.3.4.5 Corrosion immersion. When tested as specified in 4.3.4.4.5, there shall be. no corrosion inducing agents or inhibitors present in the emulsion which will produce
16、visually evident pitting, etching, or a weight change in excess of the following. dark discoloration. In addition, the specimens shall show no 4 Licensed by Information Handling Services0- Metal MIL-C-40084C 0 7777706 0434788 4 W MIL-C-40084C Milligrams -per square centimeter Alinum.,. 0.2 Copper. 0
17、.2 Steel. . 0.2 Zinc. 0,4 Cadmium Plate 0.4 Zinc osphae . 0.4 3.3.5 Removability. When tested as specified in 4.3.4.5, upon completion of the corrosion protection tests, the emulsion shall-be capable of removal by a naphtha solvent rinse. 3.3.6 Foaming, When tested as specified in 4.3.4.6, fifteen m
18、inutes after mixing, the foam on the surface of the emulsion shall not exceed 30 millili ters. 3.3.7 Film characteristics. The emulsion shall produce a film that does not become gummy, tacky or hard after storage at 210oF (99OC) when tested as specified in 4.3.4.7. 3.3-8 Film thickness. The emulsion
19、 shall produce a coating wih a maximum film thickness of 0.002 inches when tested as specified in 4.3.4.8. 3.3.9 Film flaking. The emulsion shall produce a cohesive film capable of withstanding impact without flaking at a temperature of -650 (-54OC), or colder, when tested as specified in 4.3.4.9. 3
20、.4 Toxic products and formulations. The material shall have no adverse effect on the health of personnel when used for its intended purpose. Questions pertinent to this effect shall be referred by the contracting activity to the appropriate departmental medical service who will act as an advisor to
21、the contracting agency (see 4.4). 4. QUALITY ASSURANCE PROVISIONS. 5 4.1 Responsibility for inspection. Unless otherwise specified in the contract or purchase order, the contractor is responsible for the performance of all inspection requirements (examinations and tests) as specified herein. Except
22、as otherwise specified in the contract or purchase order, the contractor may use his own or any other facilities suitable for the performance of the inspection requirements specified herein, unless disapproved by the Government. any of the inspections set forth in this specification where such inspe
23、ctions are deemed necessary to ensure supplies and services conform toprescribed requirements. The Government reserves the right to perform 4.1.1 Responsibility for compliance. All items shall meet all requirements of sections 3 and 5. The inspection set forth in this specification shall become a pa
24、rt of the contractors overall inspection system or quality program. The absence of any inspection requirements in the specification shall not relieve the contractor of the responsibility of ensuring that all products or supplies submitted to the Government for I Licensed by Information Handling Serv
25、icesMIL-C-qOOqC 0 7999706 043L1789 b W acceptance comply with all requirements of the contract. Sampling inspection, as part of manufacturing operations, is an acceptable practice to ascertain conformance to requirements, however, this does not authorize submission of known defective material, eithe
26、r indicated or actual, nor does it commit the Government to accept defective material. 4.1.2 Sampling and inspection. Sampling and inspection shall be performed in accordance with method 1022 of Fed. Test Method Std. No. 141. 4.2 Classification of tests. All tests required for the testing of this ma
27、terial are classified as quality conformance tests, except the one year storage emulsification and the humidity protection tests. 4.3 Test methods. 4.3.1 Test conditions. The routine and referee testing conditions shall be in accordance with Section 7 of Fed. fest Method Std. No. 141, except as othe
28、rwsie specified herein. ranges specified in 3.2, 3.3 or as applicable, shall constitute failure of the applicable test. Failure of any test result to fall within the 4.3.1.1 Test procedures. conducted in accordance with Fed. Test Nethod Std. No. 791 or designated ASTM Methods and as specified herein
29、. tests deemed necessary to determine that the material meets the requiremants of this specification. The following tests (see table 11) shall be The right is reserved to make any additional TABLE II Test methods. Test ASTM Method Flash and Fire Points ASTM D92 Saponif i ca t ion Number Moisture Con
30、tent Pour Point Viscosity At 1OOOF (380C) Ash Content Neutralization Number ASTM D94 ASTM D95 ASTM D97 ASTM D445 ASTM D482 ASTM D974 4.3.2 Stability test. Fifty milliliters of compound shall be placed into a tall form, 4 oz sample bottle. The bottle shall be stoppered and subjected to a temperature
31、of OOF (-18OC) for 16 hours. examined for evidence of phase separation. 77O + 5OF (25O + 2OC) and examined for phase separation or gelling. Non-conformance-to 3.2.4 shall constitute failure of the test. The compound shall then be The compound shall be warmed to 4.3.3 Emulsification tests. Place 80 m
32、illiliters of distilled water maintained at 77O + 5OF, (25O + 2OC) into a 150 milliliter graduated cylinder. Lower a stirring paddle with dimensions approximately 3/4 by 1/16 by 4-3/8“, attached to a stirring apparatus, to within “1/4 of the bottom“ of the cylinder and stir for Within Tminutes adz 2
33、0 milliliters of compound into the water. 6 Licensed by Information Handling ServicesMIL-C-40084C 80 7779906 0934770 2 MIL-C-40084C 5 minutes at 500 revolutions per minute (RPM). A similar emulsion shall be prepared utilizing synthetic hard water prepared as described in 4.3.4,i.z. Non-conformance t
34、o 3.2.5 shall constitute failure of test. 4.3.4 Tests on the properties of the emulsions. Except as otherwise specified, a sufficient quantity of 1:4 emulsion shall be prepared by mixing for 5 minutes at 500 RPM with a stirring paddle as described in 4.3.3.1. The emulsion shall be subjected to the f
35、ollowing physical and chemical tests. 4.3.4.1 Emulsion stability test. 4.3.4.1.1 Preparation of the emulsions. Two emulsions shall be used for the stability test. One emulsion shall be prepared with distilled water and the other emulsion shall be prepared with synthetic hard water as specified in 4.
36、3.4.1.2. 4.3.4.1.2 Synthetic hard water. Dry several grams of special reagent calcium carbonate (caco3) powder, low in heavy metals, alkalies and magnesium at 2250 t 5OF (1070 + 2OC) until a constant weight is obtained. add dilute hydrochloric acid (HC1) until the powder is dissolved. Add 200 millil
37、iters of distilled water and boil until the carbon dioxide (COZ) has been expelled. Cool the solution to 770 + 50F (25O + 2OC), add several drops of methyl red indicator and-adjust to an intermediate orange color by adding dilute ammonium hydroxide or dilute HC-1 as required. distiled water to the 5
38、00 milliliter mark on the flask. Dilute this solution with an equal amount of distilled water in order to produce hard water containing 125 parts per million CaCO3, Weigh 0.125 grams into a 5 milliliter volumetric flask and slowly Add 4.3.4.1.3 Test procedure. The emulsions shall be placed in separa
39、te 150 milliliter graduated cylinders, stored for 24 hours at 770 + 50F (250 + 2OC) and examined for phase separation. They shall then beplaced in a temperature of i750 + 50F (800 + 02C), for 24 hours. At the end of the 77OF (25OC) and 75oF(790C)-storage period, examine for evidence of a complete oi
40、l ring on the surface, or any other evidence of phase separation. Non-conformance to 3.3.1 shall constitute failure of this test. 4.3.4.2 Salt tolerance test. Place 100 milliliters of emulsion into a 200 milliliter Florence flask and add dropwise 0.5 milliliter of saturated - sodium chloride solutio
41、n. Cork and shake vigorously. Store for 25 hours at 77O + 50F(250 + 2OC). After storage, examine for evidence of a complete oil rTng on the surface, or any other evidence of phase separation. Non-conformance to 3.3.2 shall constitute failure of this test. 4.3.4.3 Test for pH sensitivity. Place 20 mi
42、lliliters of emulsion into each of two 3 by i5 centimeter test tubes. is added dropwise with agitation from a burette to one emulsion until it indicates pH 11. paper. indicates pH 3. 5OF (25O + 2OC). ring on the surface, or any other evidence of phase separation. Non-conformance to 3.3.3 shall const
43、itute failure of this test. One normal (1N) ammonium hydroxide The pH of the emulsion is determined by use of hydrion pH In the same manner add 1N hydrochloric acid to other emulsion until it Shake the two test tubes and store for 24 hours at 770 - + After storage examine for evidence of a complete
44、oil 7 Licensed by Information Handling ServicesMIL-C-40084C 80 7779706 0434793 4 MIL-C-40084C 4.3.4.4 Corrosion protection tests, Except as otherwise specified, a sufficient quantity of 1:4 emulsion shall be prepared by mixing for 5 minutes at 500 RPM with astirring paddle as described in 4.3.4.4.1.
45、 4.3.4.4.1 Humidity protection tests. 4.3.4.4.1.1 Test panels. The test panels shall be 2 by 4 by 1/8“; cold rolled steel conforming to QQ-S-698. Badly rusted stock shall not be used for making test panels. The edges of the panels shall be rounded and suspension holes reamed prior to cleaning. 4.3.4
46、.4.1.2 Cleaning test panels. The test surfaces of the panels shall be cleaned with naphtha conforming to TT-N-95 and methanol conforming to O-M-232, Grade A, as follows: (a) While cleaning the test panels, they shall be handled with hooks or forceps at all times. to guard against impurities on the t
47、est panels by avoiding contact with any type of contaminated surfaces. and solvents used must be clean and free from contamination. All precautions shall be taken The utensils (b) The solvents shall be maintained at a temperature high enough to keep the temperature of the panels above the dew point
48、during handling operations when they are not submerged in solvent or stored in a desiccator. (c) Wipe the surfaces clean with solvent soaked rags and scrub with surgical gauze swabs in a beaker of hot naphtha. (d) Rinse in a beaker of hot methanol. store in a desiccator until further processing, Air
49、 dry the panels and 4.3.4.4.1.3 Sandblasting test panels. Test panels shall be sandblasted to a fresh, uniformly, abraded surface with clean white, dry, sharp sand, or a size that will allow all of it to pass through a number 10 sieve conforming to RR-S-366, a minimum of 90 percent to pass through a number 20 sieve and not more than 10 percent to pass through a number 50 sieve. Immediately after sandblasing, the panels shall be placed into a container of anhydrous methanol. Remaining residue and contamination shall be removed by holding the panels in a rack at 250 from the
