1、INCH-POUND MIL-DTL-32069 July 20, 2000 SUPERSEDING May 13,1982 KK-L-241D MILITARY DETAILED SPECIFICATION LEATHER, CATTLEHIDE, RIGGING This specification is approved for use by all Department and Agencies of the Department of Defense. 1. SCOPE This Military Detailed Specification covers rigging leath
2、er made from full grain cattlehide and is intended for use in shoe and textile repair shops. 1.2 CLASSIFICATION. The leather will be in the following types: Type1 - Sides TypeII- Backs Class 1 - Mildew resistant treated Class 2 - Untreated Beneficial comments (recommendations, additions, deletions)
3、and any pertinent data which may be of use in improving this document should be addressed to: Defense Supply Center Philadelphia, Clothing and Textiles Directorate, Attn: DSCP-COC, bld 6-1-D, 700 Robbins Ave, Philadelphia, PA 19111-5096. AMSC NIA FSC 8330 Provided by IHSNot for ResaleNo reproduction
4、 or networking permitted without license from IHS-,-,-MIL-DTL-32069 2. APPLICABLE DOCUMENTS 2.1 General. 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
5、for additional information or as examples. While every effort has been made to ensure the completeness of this list, document users are cautioned that they must meet all specified requirements documents cited in sections 3 and 4 of this specification, whether or not they are listed. 2.2 Government d
6、ocuments. MIL-L-8067 (Unless otherwise indicated, copies of Federal and military specifications, standards and handbooks are available from the Standardization Documents Order Desk, Bldg. 4D, 700 Robbins Avenue, Philadelphia, PA 19 1 1 1-5094.) 2.3 Non-Government publications. The following document
7、(s) form a part of this document to the extent specified herein. Unless otherwise specified, the issues of the documents which are DoD adopted are those listed in the issue of the DODISS cited in the solicitation. Unless otherwise specified, the issues of documents not listed in the DODISS are the i
8、ssues of the documents cited in the solicitation (see 6.2). AMERICAN SOCIETY FOR TESTING AND MATERIALS D- 6075 Cracking Resistance of Leather D- 2209 Tensile Strength of Leather D- 3495 Hexane Extraction of Leather D- 2617 Total Ash in Leather (Applications for copies should be addressed to American
9、 Society For Testing and Materials, 100 Barr Harbor Drive, West Conshohocken, PA 19428.) ANSUASQC 21.4 (Applications for copies should be addressed to ANSUASQC American Society for Quality Control 611 East Winconsin Ave. , Milwaukee WI 53202) (Non-Government standards and other publications are norm
10、ally available from the organizations that prepare or distribute the documents. These documents also may be available in or through libraries or other informational services.) 2.4 Order of Precedence. In the event of a conflict between the text of this document and the references cited herein (excep
11、t for related associated specifications or specification sheets), the text of this document takes precedence. Nothing in this document however, supersedes applicable laws and regulations unless a specific exemption has been obtained. 2 Provided by IHSNot for ResaleNo reproduction or networking permi
12、tted without license from IHS-,-,-MIL-DTL-32069 3. REQUIREMENTS 3.1 Materials The strap leather shall be full grain cattlehide. Bull hides will not be acceptable. The flesh side of the leather shall be smooth and free of coarse loose flesh. 3.2 Tannage. The leather shall be vegetable tanned. 3.3 Phy
13、sical requirements. 3.3.1 Trim (form and area). The leather shall be furnished in the form of sides or backs as required for the type specified. The area in terms of square feet shall be legibly marked in the butt area on the flesh side of the leather. 3.3.2 Color . Unless otherwise specified (see 6
14、.2), the color of the leather shall be natural as produced by the tanning agents. If necessary, a light application of dye or pigment may be employed to level the color of the grain side. 3.3.3 Weight andThickness. The leather shall be of the weight and thickness specified (see 6.2) as shown in tabl
15、e I. The leather may be shaved on the flesh side to provide greater uniformity of thickness, but shall not be split (see 6.4). TABLE I. Weight and thickness Weight Thickness (ounces) L/ Light Medium Heavy 6to7% 8to9% 10 and above - 1/ 1 ounce = 1/64 inch 3.3.4 Breaking force. Not less than 80 percen
16、t of the specimens tested shall meet the minimum breaking force values indicated in table II when tested as specified in 4.3. TABLE II. Breaking force Thickness (ounces) Breaking force minimum (pounds) 6to7% 8to9% 10 and above 150 200 250 3 Provided by IHSNot for ResaleNo reproduction or networking
17、permitted without license from IHS-,-,-MIL-DTL-32069 3.3.5 Elongation. Not less than 80 percent of the specimens tested shall have elongation values of 25 percent or less, at the loads shown in table III when tested a s specified in 4.3. TABLE III. Elongation load Thickness (ounces) Elongation load
18、(pounds) 6to7% 100 8to9% 150 10 and above 200 3.3.6 Cracking. The leather shall not crack when tested as specified in 4.3. 3.4. Fungicide. Unless otherwise specified (paragraph 6.2), one of the following leather fungicides is required. 3.4.1 2- (thiocyanomethylthio) Benzothiazole. The leather shall
19、contain not less than 1OOppm and not more than 400ppm of active ingredient 2- (thiocyanomethylthio) benzothiazole (TCMTB), (see paragraph 4.4.1). 3.4.2 Ortho- Phenyl Phenol. The leather shall not contain less than 540 ppm and not more than2580 ppm. (see paragraph 4.4.2) 3.4.3 Diiodomethyl para Tolys
20、ulfone . The leather shall contain not less than 300 ppm and not more than 2000 ppm. (see paragraph 4.4.3) 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-32069 3.5 Chemical requirement 3.5.1 specified in 4.3. The leather shall conform to t
21、he chemical requirements of table III when tested as TABLE IV Chemical requirements Characteristic Minimum Maximum Chloroform-soluble material, percent L/ 7.0 18.0 18.0 Water-soluble material, percent L/ _ 5.0 Total ash, percent L/ _ Acidity (pH) 3.3 5.0 - 1/ Moisture free basis. 3.6 Workmanship. Th
22、e finished leather shall conform to the quality established by this specification. The occurrence of defect shall not exceed the applicable acceptable levels. 4.0 VERIFICATION. 4.1 as follows: Classification of inspections. The inspection requirements specified herein are classified 4.1.1 government
23、 reserves the right to check test such items to determine the validity of the certification. Certificate of compliance. Where certificates of compliance are submitted, the 4.2 provisions of ANSUASQC Z1.4, except where otherwise indicated hereinafter. Conformance inspection. Sampling for inspection s
24、hall be in accordance with the 4.2.1 material shall be tested in accordance with all the requirements of referenced specification, drawings, and standards unless otherwise excluded, amended, modified, or qualified in this specification or applicable purchase document. Component and material inspecti
25、on. In accordance with 4.1 above, components an 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-32069 4.2.2 Examination of the end item. The classification of defects found during the examination shall be in accordance with the lists shown
26、in 4.2.2.1 and 4.2.2.2. The sample unit for these examinations shall be one side or back. The lot size shall be expressed in terms of one side or back. A sample size of 15 and a rejection number of 2 shall be applicable for thickness determinations on lots consisting of 51 or more units of product.
27、Separate examinations shall be performed for visual and dimensional characteristics, but the same sample may be used for each examination. 4.2.2.1 Examination for visual characteristics. Examine Defect Material Not full grain cattlehide Trim Not sides or backs as required Color Unless otherwise spec
28、ified, color not natural Quality of leather Burn mark on flesh side Flesh side not smooth or has areas of loose Flesh in excess of four square inches in total area. Any hole, deep cut, scratch, damaged grain hipmark, Rough shoulder, Stain, or other defects which individually or collectively impair t
29、he cutting value of more than 10 % of the total area of the back or sided. Raw streak NOTE: Light, well healed scratches and grub holes, light fat wrinkles, and slight stains Shall not be classified as defects. 4.2.2.2 Examination for dimensional characteristics. Examine Defect Area (expressed in Te
30、rms of square feet) Not as marked on leather Marking Omitted Thickness I/ Not as specified - 1/ Thickness shall be measured in accordance with ASTM-D- 18 14 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-32069 4.3 End item testing. The met
31、hods of testing specified in ASTM wherever applicable and as listed in table IV, shall be followed. Sampling procedure and location from which the sample unit is to be obtained shall be in accordance with ANSUASQC 21.4. All test reports shall contain the individual values utilized in expressing the
32、final result . The lot shall be rejected if any one of the following conditions exists: a. More than three test failures occur for breaking force or elongation. b. More than one test failure occurs for the remaining requirements applicable to the sample unit. c. Any composite fails to meet the speci
33、fied requirement. TABLE V Tests Requirement Characteristic paragraph Requirement Applicable to Test Sample Composite method unit sample Material Tannage Breaking force 3.1 3.2 3.3.4 - 1/ - - 1/ - AS TM- D - 2209 X Elongation 3.3.5 AS TM- D - 2209 X Cracking 3.3.6 ASTM-D-6075 X Chloroform-soluble mat
34、erial 3.4.1 ASTM-D-3495 - X Water-soluble material 3.4.1 ASTM-D-3495 - X Total ash 3.4.1 ASTM-D-3790 - X PH value 3.4.1 ASTM-D-3790 - X Fungicide 3.4. para 4.4 X - 1/ Unless otherwise specified, a certificate of compliance is required and will be acceptable for the stated requirement. 7 Provided by
35、IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-32069 4.3.1 The diameters of the mandrels for the indicated thickness shall be as follows: Cracking. The leather shall be tested for cracking in accordance with ASTM-D-6075. Thickness of leather (ounces) Di
36、ameter of mandrel (inches) 6to7% 8to9% 10 and above ?A ?A 5/16 4.4 Fungicide 4.4.1 TCMTB. Testing to determine the concentration of Busan 30 L in the leather shall be conducted by using Buckman Laboratories standard test method for 2- (Thiocyanomethylthio) Benzothiazole Analysis of Leather by HPLC.
37、This method may be obtained by contacting Buckman Laboratories at 1256 North McLean Blvd., Memphis, TN 38108 (800) 282-5625. 4.4.2 Ortho-phenyl phenol. Testing to determine chemical concentration in leather shall be conducted in accordance with Test I, Type I of the MIL-L-8067 specification. 4.4.3 D
38、iiodomethyl para Tolysulfone. The chemical concentration in the leather shall be conducted using the High Pressure Liquid Chromatography (HPLC) test method as follows: 4.4.3.1 Grinding. Grind the leather according to paragraph 6.3.7 of ASTM Method D2813 Standard Practice for Sampling Leather for Phy
39、sical and Chemical Tests. 4.4.3.2 Stock Standard Preparation. Weigh accurately approximately 1OOmg of Diiodomethyl- para-tolylsulfone Internal Reference Standard (IRS), into a 1OOml volumetric flask. Add approximately 50ml of acetonitrile, stopper and sonicate to aid dissollution (about 1 minute). D
40、ilute to volume with acetonitrile. 4.4.3.3 Working Standards Preparation. Transfer 3ml aliquots of the Stock Standard Preparation in to 25,50, 100, and 250ml volumetric flasks. Dilute to volume with acetonitrile. These standards contain approximately 12, 30, 60 and 120ppm of Diiodomethyl-para-tolyls
41、ulfone. Note: (1) A lower standard may be required for samples containing very low levels of Diiodomethyl para tolysulfone (2) Solutions must be stored in darkness to prevent degradation. Minimize exposure to light during preparation and use. The Standard Preparations may be retained one month. 8 Pr
42、ovided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-32069 (3) Internal Reference Sample (IRS) is available from Chemtan Company, Inc., P.O. Box C, Exeter. NH 03833 Tel.: 603-772-3741 4.4.3.4 Sample preparation. Accurately weigh approximately 3 to 5
43、g of sample into a 150ml beaker. Add 75-1OOml of acetonitrile. Cover samples with parafilm, mix 16 to 24 hours on magnetic stir plate. The following day, allow samples to settle; remove necessary amount of acetonitrile and inject Note: Samples may have to be diluted further to fall within standard c
44、urve. 4.4.3.5 Testing equipment: a. HPLC System with variable UV detector and integrating computer. Suitable syringe and glassware. b. A micro-Bondapak C18 column (Waters Associates P/N 2734) or equivalent. c. 0.45-micron polycarbonate filters (Nuclepore Corporation, Catalog No. 11 1107) or equivale
45、nt. d. Calculator capable of doing linear regression. e. Reagents: Acetonitrile (Chromatographic grade). 4.4.3.5.1 Typical mobile phase. Mix 550ml of distilled water and 450ml of acetonitrile. Filter and degas the solution. The concentration may be varied to meet system suitability requirements With
46、in range 50% to 40 acetonitrile. 4.4.3.5.2 Typical chromatographic conditions: Injection Volume 20 Microliters Flow 2.5 mlminute Detector 235 nm 4.4.3.6 System suitability. Inject the highest working standard until 2 percent agreement is reached between two successive injections. Chromatograph for a
47、pproximately 15 minutes. Determine that, after the solvent front, one impurity peak elutes before the major peak. Elution for mo no io do me th yl- p ara- t o 1 ylsulfo ne is ab0 ut 6 minu tes and for Diio do me th yl- p ara- t o 1 ylsulfo ne is about 8.5 minutes. 9 Provided by IHSNot for ResaleNo r
48、eproduction or networking permitted without license from IHS-,-,-MIL-DTL-32069 4.4.3.7 Procedure. Inject each standard and sample preparation in duplicate allowing each injection to run for at least 15 minutes. Measure the peak response for the Diiodomethyl-para- to 1 ylsulfo ne. Note: The run time
49、may have to be increased for samples with late eluting peaks. Perform a linear regression of peak response (area) versus concentration for each of the components. For each component: Concentration (ppm) in leather = Concentration (ppm) XZ from linear regression. Sample wt (g) 5. PACKAGING. 5.1 Packaging. For acquisition purposes, the packaging requirements shall be as specified in the contract or or
