1、Comments, suggestions, or questions on this document should be addressed to Defense Supply Center Richmond, ATTN: DSCR-VEB, 8000 Jefferson Davis Highway, Richmond, VA 23297-5616, or e-mailed to STDZNMGTdla.mil. Since contact information can change, you may want to verify the currency of this address
2、 information using the ASSIST database at https:/assist.daps.dla.mil/. AMSC N/A FSC 6850 INCH-POUND MIL-DTL-13528C 7 December 2009 SUPERSEDING MIL-H-13528B 27 February 1981 DETAIL SPECIFICATION HYDROCHLORIC ACID, INHIBITED, RUST-REMOVING Reactivated after 7 December 2009 and may be used for new and
3、existing designs and acquisitions. This specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers inhibited hydrochloric acid for use in removing heavy rust deposits from steel surfaces. 2. APPLICABLE DOCUMENTS 2.1 G
4、eneral. The documents listed in this section are specified in sections 3 and 4 of this specification. This section does not include documents cited in other sections of this specification or recommended for additional information or as examples. While every effort has been made to ensure the complet
5、eness of this list, document users are cautioned that they must meet all specified requirements of the documents cited in sections 3 and 4 of this specification, whether or not they are listed. 2.2 Government documents. 2.2.1 Specifications and standards. The following specification and standard for
6、m a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-13528C 2 FEDERAL SPECIFICATIO
7、N QQ-S-698 - Steel, Sheet and Strip, Low Carbon FEDERAL STANDARD FED-STD-313 - Material Safety Data, Transportation Data and Disposal Data for Hazardous Materials Furnished to Government Activities (Copies of these documents are available online at https:/assist.daps.dla.mil/ or from the Standardiza
8、tion Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19111-5094.) 2.3 Non-government publications. The following documents form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation
9、 or contract. AMERICAN SOCIETY FOR QUALITY (ASQ) ASQ Z1.4 - Sampling Procedures and Tables for Inspection by Attributes (Copies of this document are available online at http:/www.asq.org/ or from American Society of Quality, 600 North Plankinton Avenue, Milwaukee, WI 53203.) ASTM INTERNATIONAL ASTM
10、A 108 - Standard Specification for Steel Bar, Carbon and Alloy, Cold-Finished ASTM E 8/E 8M - Standard Test Methods for Tension Testing of Metallic Materials (Copies of these documents are available online at http:/www.astm.org/ or from ASTM International, 100 Barr Harbor Drive, P.O. Box C700, West
11、Conshohocken, PA 19428-2959.) 2.4 Order of precedence. Unless otherwise noted herein or in the contract, in the event of a conflict between the text of this document and the references cited herein, the text of this document takes precedence. Nothing in this document, however, supersedes applicable
12、laws and regulations unless a specific exemption has been obtained. 3. REQUIREMENTS 3.1 Material. The material shall consist of a technical grade hydrochloric acid, of a normality concentration of 4.7 to 4.9, admixed with suitable inhibiting agents to reduce its metal corrosiveness characteristics.
13、Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-13528C 3 3.2 Corrosiveness. The average weight loss of 1020 cold rolled steel panels, pickled at 77 F (25 C) and at 100 F (37.8 C) in the inhibited acid furnished under contract, shall not be gr
14、eater than the average weight loss of similar panels pickled in like manner in the reference standard inhibited hydrochloric acid (see 4.5.1). Furthermore, the test panels shall not be pitted by the acid. 3.3 Hydrogen embrittlement-tensile effects. The average reduction in area of 1213 cold-drawn st
15、eel bars, pickled at 77 F (25 C) and at 100 F (37.8 C) in the inhibited acid furnished under contract, shall be equal to or greater than the reduction in area of similar test specimens pickled in like manner in the reference standard inhibited acid (see 4.5.1). However, if the reduction in area of t
16、he specimens pickled in the reference standard acid is greater than the reduction in area of the untreated control test specimens (see 4.5.3), the acid furnished under contract will be acceptable. 3.4 Rate of rust removal. The average time required by the inhibited acid furnished under contract to r
17、emove rust from 1020 cold rolled steel weather rusted panels, shall not be longer than the average time required by the reference standard acid on similar specimen likewise tested. 3.5 Toxicity. The material shall have no adverse effect on the health of personnel when used for its intended purpose.
18、Questions pertinent to this effect shall be referred by the procuring activity to the appropriate departmental medical service who will act as an advisor to the procuring agency. A Material Safety Data Sheet (MSDS) shall be furnished in accordance with FED-STD-313. 3.6 Recycled, recovered, or enviro
19、nmentally preferable materials. Recycled, recovered, or environmentally preferable materials should be used to the maximum extent possible, provided that the material meets or exceeds the operational and maintenance requirements, and promotes economically advantageous life cycle costs. 4. VERIFICATI
20、ON 4.1 Classification of inspection. The inspection requirement specified herein is classified as conformance inspection (see 4.4). 4.2 Lot. A lot of inhibited hydrochloric acid shall consist of not more than 1,000 gallons of material produced by one manufacturer in a batch process, and submitted at
21、 one time for acceptance. 4.3 Sampling. 4.3.1 Sampling for examination of filled container. A random sample of filled containers shall be taken in accordance with ASQ Z1.4, inspection level S-1, with the Acceptance Quality Limit (AQL) as specified in the contract (see 6.2), to verify compliance with
22、 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-13528C 4 all stipulations of this specification regarding fill, closure, marking and other requirement not involving tests. 4.3.2 Sampling for tests. Two containers from each batch shall be sel
23、ected at random and a one-gallon sample shall be taken from each container. 4.4 Conformance inspection. 4.4.1 Examination of filled containers. Each sample filled container selected as in 4.3.1 shall be examined for defects of construction of the container and the closure, for evidence of leakage, a
24、nd for unsatisfactory markings. Each filled container shall also be examined for required fill. Any container in the sample having one or more defects, or under required fill, shall be cause for rejection. If the number of nonconforming containers in any sample exceeds the acceptance number for the
25、appropriate sampling plan of ASQ Z1.4, the lot represented by the sample shall be rejected. 4.4.2 Lot acceptance tests. Each sample taken as in 4.3.2 shall be subjected to the tests specified in 4.5. Failure of either sample to comply with any of tests specified herein shall be cause for rejection o
26、f the lot or batch. 4.5 Test procedures. 4.5.1 Reference standard inhibited hydrochloric acid. The reference standard inhibited acid used for comparison in the tests shall be prepared as follows: Place 10.0 grams each of para-toluidine and hexamethylene tetramine in a 2,000-ml volumetric flask. Add
27、100 ml of 4.8 N technical grade hydrochloric acid at room temperature. Let the mixture stand until a precipitate forms. Add approximately 800 ml of distilled water and 700 ml of concentrated technical grade hydrochloric acid to bring the final solution to a normality of 4.8, mixing the solution well
28、, cooling it to room temperature, and bringing it up to volume with distilled water. 4.5.2 Corrosiveness. 4.5.2.1 Panel preparation. Sixteen panels of cold-rolled and thoroughly annealed 18-gage 1020 steel, each 2-1/2 by 2-1/2 inches (6.4 by 6.4 cm) shall be prepared. The steel sheets or strips used
29、 to make the panels shall conform to QQ-S-698. The edges of the panels shall be milled square. All rough spots on the panel surfaces shall be removed with No. 1 emery cloth (approximately 100 strokes are normally required), followed by rubbing with crocus cloth (100 stroke on each face). Finally the
30、 faces of the panels shall be rubbed against analytical grade celite (hydrated amorphous silica). The edges of the panels shall be treated in identical sequence, but using only half the number of strokes required for the panel faces. The panels shall then be swabbed with absorbent cotton under runni
31、ng water, washed with alcohol, and air-dried. The panels shall be handled with tweezers subsequent to the celite treatment to avoid contact with the hands of the operator. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-13528C 5 4.5.2.2 Treat
32、ment procedure at 77 F (25 C). Eight of the test panels shall be individually weighed, to the nearest 0.1 milligram, and placed into separate Petri dishes, 100 millimeters in diameter by 20 millimeters deep with each panel held by a glass hook so that only one of its edges touches the bottom of the
33、dish. A sufficient amount of the standard reference acid at 77 F (25 C) shall be added to four of the dishes (approximately 45 ml to each dish), so as to completely cover the panel. A like amount of that inhibited acid under test, also at 77 F (25 C) shall be added to each of the other four dishes.
34、Record the time of addition of the acids. After 90 minutes of pickling in the acids, maintained at 77 2 F (25 1.1 C) the panels shall be removed, washed thoroughly with water, dried with paper toweling, rubbed with analytical grade celite (50 times on each face), again washed with water, then with a
35、lcohol, air-dried, and reweighed. The average loss in weight of the two sets of panels shall be calculated and compared. The panels shall then be observed under 6X magnification for evidence of pitting. 4.5.2.3 Treatment procedure at 100 F (37.8 C). The procedure for the pickling treatment at 100 F
36、(37.8 C) shall be identical to that followed in the treatment at 77 F (25 C) (see 4.5.2.2), except that the temperature of both the reference standard acid and of the acid under test shall be brought to 100 F (37.8 C) prior to being added to the Petri dishes containing the test panels. The temperatu
37、re shall then be maintained at 100 2 F (37.8 1.1 C) for the 90 minute duration of the test. The panels shall be treated like those exposed at 77 F (25 C) and the average loss in weight of the two sets of panels calculated and compared. The panels shall then be observed under 6X magnification for evi
38、dence of pitting. 4.5.3 Hydrogen embrittlement-tensile effects. 4.5.3.1 Preparation of test specimens. Two 10-foot (3.05 meters) bars of 1213 cold drawn steel, 1/2 inch (1.3 cm) in diameter, shall be cut into l-foot (0.3 meter) lengths. The steel bar used shall conform to ASTM A 108. The ten section
39、s obtained from one bar shall be kept apart from the 10 sections of the other bar. The specimens shall be swabbed with naphtha, followed by acetone, washed with water, then with alcohol and air dried. 4.5.3.2 Treatment procedure at 77 F (25 C). Eight of the specimens from each bar shall be placed in
40、to separate test tubes, l-inch (2.5 cm) in diameter by 15 inches (38.1 cm) in length. The remaining two specimens of each bar shall be kept in reserve for control purposes. Four of the specimens of one of the bars shall be covered with the inhibited acid under test, and the other four specimens of t
41、hat bar covered with the reference standard acid, with both acids at a temperature of 77 F (25 C). The specimens shall be allowed to remain in the acids, at a controlled temperature of 77 2 F (25 1.1 C) for 90 minutes. The specimens shall then be removed, washed thoroughly with water, dried with pap
42、er toweling, then washed with alcohol, and dried again with paper toweling. The average diameter of the individual specimens shall be measured half way between the ends. The specimens shall then be subjected to the tension test outlined in ASTM E 8/E 8M, within one hour following the pickling treatm
43、ent, using a gage length of 2 inches (5.1 cm). The control specimens reserved from the bar shall also be tested likewise. The smallest diameter at the point of break of each specimen shall be measured and the average reduction in area of the specimens pickled in the acid under test, of those pickled
44、 in Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-13528C 6 the reference standard acid, and of the control specimens, calculated and compared for compliance with the requirements. 4.5.3.3 Treatment procedure at 100 F (37.8 C). The specimens
45、 obtained from the second bar shall be treated in similar manner as those treated at 77 F (25 C), except that the temperature of the acid under test and that of the reference standard acid shall be brought to 100 F (37.8 C) prior to being added to the test tube containing the specimens. The temperat
46、ure shall be maintained at 100 2 F (37.8 1.1 C) for the 90 minute duration of the pickling treatment. The specimens shall be washed, dried, measured, broken, and their smallest diameter at the point of break determined in identical manner as for those specimens treated at 77 F (25 C). The control sp
47、ecimens shall be broken and measured in identical manner as the control specimens for the 77 F (25 C) test. The average reduction in area of the specimens pickled in the acid under test, of those pickled in the reference standard acid, and of the control specimens shall likewise be calculated and co
48、mpared for compliance with the requirements. 4.5.4 Rate of rust removal. 4.5.4.1 Preparation of test panels. Twelve panels of cold-rolled and thoroughly annealed 18-gage 1020 steel, each measuring 2-1/2 by 1/2 inches (6.4 by 1.3 cm) shall be prepared. The steel sheets or strips used to make the pane
49、ls shall conform to QQ-S-698, and shall have been exposed to the weather, under as uniform exposure conditions as possible, for a period of 6 months prior to the test. 4.5.4.2 Procedure. The test panels shall be washed with petroleum ether and air-dried. Each panel shall be placed separately into test tubes of 25 millimeter diameter. A 12-ml portion of the acid under test, at 77 F (25 C),
