1、spec flIL-S-1LI729 13 = 7777706 0278318 1 - (G - 92 -a-!-/ - MIL-S-14929 (MU) 30 August 1968 MILITARY SPECIFICATION SULFUR : COMMERCIAL GRADE (FOR USE WITH AMMUNITION) 1. SCOPE 1.1 Scope,-Commercial grade sulfur covered by this fication is for use in ammunition. 2. APPLICABLE DOCUMENTS 2.1 The follo
2、wing specifications, standards and drawings of the issue in effect on date of invitation for bids form a part of this purchase description. STANDARDS MILITARY MIL-STD-105 - Sampling Procedres and Tables for Inspection Dy Attributes (ABC-STD-105). MIL-STD-109 - Quality Assurance Terms and Definitions
3、 (Copies of specifications, standards, drawings, and publications required by contractors in connection with specific procurement functions should be obtained from the procuring activity or as directed by the contracting officer). 3. REQUIREMENTS 3.1 Chemical requirements.-The sulfur shall conform t
4、o the requirements on Table I. Sulfur (dry basis) Mois ture Ash Organic impurities TABLE I Chemical Requirements Minimum Percent 99.5 -=CUMENT CONTAINS b PAGES. ? - FSC 1375 pf Maximum Percent -3- 0.5 0.1 0.1 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from I
5、HS-,-,- MIL-S-1q929 13 W 999990b 02983193 W MIL-S-14929 (MU) 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection.-Unless otherwise specified in the contract or purchase order, the supplier is responsible for the performance of all inspection requirements as specified herein. Except as
6、otherwise specified in the contract or order, the supplier may use his own or any other facilities suitable for the performance of ths inspection requirements as specified herein, unless disapproved by the Government. The Government reserves the right to perform any of the inspections set forth in t
7、he specification where such inspections are deemed necessary to assure supplies and services conform to prescribed requirements. Reference shall be made to Standard MIL-STD-109 in order to define terms used herein. 41.1 Submission of product.-At the time the completed lot of product is submitted to
8、the Government for acceptance, the contractor shall supply the following Information accompanied by a certificate which attests that tho informatinn provided is correct and applicable to the product being submitted: quality assurance provisions specified within this specification a. A statement that
9、 the lot complies with all of the b. Number of units of product inspected. c. Results obtained, by defect_ code, for all inspections performed. d. Drawing, specification number and date, together with an identification and date of changes. e. Certificates of conformance on all material purchased by
10、the contractor when such material in controlled by Government or commercial specifications referenced in any of the contractual documents. f. Number of items in the lot. g. Date submitted. The certificate shall be signed by a responsible agent of the certifying organizatjon. The initial certificate
11、submitted shall be substantiated by evidence of the agents authority to bind his principal. Substantiation of the agents authority will not be required with subsequent certificates unless, during the course of the contract, this authority is vested in another agent of the certifying organization. 2
12、Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-S-14929 (MU) 4.2 Inspection provisions 4.2.1 Lot formation. -The term “lot“ as used throughout this specification refers to an inspection lot, which is defined as an essentially homogeneous collecti
13、on of units of product from which a representative sample is drawn and inspected to determine conformance of the lot with applicable requirements. The sample selected shall represent only that quantity of units from which the sample was drawn and shall not be construed to represent any prior or subs
14、equent quantities presented for inspection. Homogeneity shall be considered to exist provided the lot has been produced by one manufacturer in one unchanged process, in accordance with the same drawings, same drawing revisions, same specifications and same specification revisions. Changes to the pro
15、cess, specification or drawings not affecting safety, performance, interchangeability, or storage, as determined by the Government. shall not be deemed to alter the homogeneity of the lot. Inspection lots shall comply with MIL-STD-105. 4.2.2 Sampling 4.2.2.1 Lumps.-A representative sample of approxi
16、mately 2 1/2 pounds shall be taken from each estimated tenth of the lot. The ratio of lumps to fines shall be approximately the same in the sample as in the lot. The 10 samples shall be combined to form a composite sample and handled in the following manner: crush the lumps to reduce the composite s
17、ample to laboratory size by the usual quartering process. Place the sample in a clean, dry, glass bottle and stopper tightly. Label the bottle in a manner that will identify the sample with the lot represented. If the sample fails to comply with paragraph 3, the lot shall be re j ect ed . 4.2.2.2 In
18、spection.-All containers shall be carefully examined and any which show evidence of leakage, loss of contents, objectionable dents, or corrosion, shall be considered as not meeting the requirements of this specification. 4.3 Test methods and procedures. 4.3.1 Moisture, Major defect, Code No. O1001 (
19、see 6.2).-Weigh approximately 50 grams of the sample on a tared watch glass, heat for 12 hours at approximately 82 degrees C., cool in a desiccator and weigh. Calculate the percent of moisture as follows: Percent moisture = loss in weight x 100 weight of sample 3 Provided by IHSNot for ResaleNo repr
20、oduction or networking permitted without license from IHS-,-,-MIL-S-LLI727 13 7777706 0298321 1 MILrS-14929 (MU) 4.3.2 Organic impurities and ash, Hajor defect, Code No. 02001.-Weigh approximately 15 grams of the dried sample, (see 4.3.1), into a tared porcelain dish. Ignite the sample trith a small
21、 pin flame. The sulfur, once ignited, will burn evenly and clean unless organic matter is present. if organic matter is present, a film of melted asphalt or oily matter forms over the surface of the molten sulfur and shuts off the air so that the flame from the burning sulfur is extinguished. When a
22、 film of dark oily natter is first noticed, touch it lightly with the pin flame and it will usually break or char, allowing the sulfur to burn evenly. Toward the end of the burning, apply a very gentle heat to the dish and thus char the organic matter but keep the temperature well belw red heat SO t
23、hat the organic matter is not ignited. When all the sulfur is burned off, as indicated by lack of sulfur dioxide odor, cool the dish in a desiccator and weigh. This weight, (A) represents the combined organic impurities and ash. Ignite the residue in the dish to burn off the organic impuri- ties, co
24、ol in a desiccator and weigh. This weight (BI represents the ash, and the difference between the two (A-B) represents the organic impurities. Calculate the percentage of organic impurities and of ash as follows: Percent organic impurities = (A - B) x 100 weight- of sample Percent ash = B x 100 weigh
25、t of sample 4.3.3 Organic impurities retest.-If the percentage of organic impurities exceeds 0.1 percent as d-etermined in 4.3.2, the percentage of sulfur contained in the residue shall be determined by the following procedure: weigh the same weight of sample as used in 4.3.2 into a tared porcelain
26、dish. Ignite and burn the sanple using the same procedure used in 4.3.2 Uriti.1 all the sulfur is burned off as indicated by lack ofculfur dioxide fumes. Prepare an oxidizing agent by melting 4 grams of potassium hydroxide and. 0.5 grams of potassium nitrate in a large silver crucible with the addit
27、ion of a little water. Cool the mixture and transfer the residue quantitatively from the tared porcelain dish to the large silver crucible. Heat gradually, stirring the mixtures frequently with a silver wire until all the organic matter is decomposed. 4 Provided by IHSNot for ResaleNo reproduction o
28、r networking permitted without license from IHS-,-,-MIL- S- 14 9 2 9 Cool and dissolve the melt in approximately 300 milliliters of water. Make the solution just acid with hydrochloric acid. Heat to boiling and a6d 5 milliliters of a 10-percent barium chloride solution. Filter the solution through a
29、 tarea Gooch crucible. Dry the precipitate in an oven for 1 hour, then in a muffle furnace to a dull red heat. Cool in a desiccator and weigh. The true percentage of organic impurities may be calculated as foows: Percent sulfur in residue = A x 100 x 0.1373 weight of sample True percent organic impu
30、rities = B - C Where : A = Weight of barium sulfate precipitate B = Percent organic impurities as determined in 4.3.2. C = Percent sulfur in residue as determined in this paragraph. 4.3.4 Sulfur, Major defect, Code KO. 03001.-Determine the percent of sulfur as follows: Percent sulfur (dry basis) = 1
31、00 - (percent organic impurities + percent ash) 5. PREPARATION FOR DELIVERY 5.1 Packaging.-Unless otherwise specified, commercial packages are acceptable. 5.2 Packing.-Unless otherwise specified, the sulfur shall be packed in 5-ply multiwall paper bags containing approximately 112 pounds, The bags s
32、hall be constructed of 5-ply, 60-pound sheet (the outer sheet being highly calendered for water-resistance) 6/12 threads, pasted gussets, cushioned stitch, and sewn open mouth. 5.3 Bulk shipments.-When specified in the contract or order, bulk shipments of Powder sulfur may be made in carload lots. 5
33、.4 Marking.-Unless otherwise specified, shipping containers shall be marked with the name of the material, the type, and quantity contained therein as defined by the contract or order under which the shipment is made, the name of the contractor, and the number of the contract or order. 5 Provided by
34、 IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-I4 _ MIL-S-LV927 13 W 997.7906 0278323 5 L-S-14929 (MU) 6. NOTES 6.1 Ordering data.-Procurement documents shall specify a. Title, number- and date of this specification. the following : 6.2 Inspection code numbers
35、.-The five-digit code numbers assigned to the inspections herein are to facilitate future data collection and analysis by the Government. 6.3 Intended use.-The sulfur is intended for use in the manufacture of black powder. 6.4 Caution should be exercice in the storing of sulfur as it is a combustible material under certain conditions. Custodian: Preparing Activity: Project Number: 1375-AO13 FSC 1375 AFXY-MU AKlY-i4U 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
