1、MIL-L-4 3704 26 Map 1970 MILITARY SPECIFICATION LEATHER, CATTLEHIDE, CHROME TANNED, FATLIQUORED . This specification is mandatory for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope.- This specification covers the requirements for chrome tanned, 2. APPLICABLE DOC
2、UMENTS 2.1 The following documents of the issue in effect on date of invitation full grain and burnished full grain cattlehide upper leather. for bids or request for proposal., form 8 part of this specification to the extent specified herein: SPECIFICATION MILITARY MIL-L-43432 - Leather, Packaging a
3、nd Packing Of. STANDARD FEDERAL FED-STD-3l - Leather, Methods of Sampling and Testing. (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 contrac
4、ting officer.) 3. REQUIREMENTS 3.1 Material.- The leather shall be full grain or burnished full grain cat tleh ide. 3.2 Tannage.- The leather shall be chrome tanned. 3.3 physical requirements.- FSC 8330 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,
5、-1-L-43704 83 779970b 0444383 7 r v MIL-L-43 70 4 3.3.1 Trim (form) and area.- The leather shall be trimmed to conform with the definition of “side“ as listed under “Definitions of Terms“ in FED-STD-3U The area expressed in terms of square feet shall be legibly marked in the butt area on the flesh s
6、ide of the leather. The area of the side shall not be greater than 25 square feet. 3.3.2 - Color.- The color of the leather shall be black. The leather shall be dyed on the grain side and the flesh side. sides of the leather, but need not be struck entirely through the leather. Leather previously dy
7、ed or finished in a color not specified and then redyed or refinished to match a specified color shall not be acceptable. The dye shall penetrate both 3.3.3 Finish.- The leather shall have a smooth bright pigmented finish Embossed or printed leather shall not be acceptable. on the grain side, A lacq
8、uer emulsion top finish based essentially on nitrocelluloee compounding shall be applied to the grain side of the leather. 3.3.3.1 Burnishing .- When burnished leather is furnished, burnishing shall be accomplished with automatic machines equipped with 400 grit or 320 dull grit cloth or paper. strat
9、a of the grain, but shall not remove all evidence of e grain. or buffing to correct surface blemishes shall not be permitted. (NOTE: than 80 percent of the specimens tested shall have minimum stitch tearing strength values of 30 pounds; the remaining 20 percent of the specimens tested shall have min
10、imum stitch tearing strength values of 20 pounds. The burnishing operation shall slightly levei out the peak Snuffing 3.3.4 Thickness.- The leather shall be 3-1/2 to 4-3/4 ounces in thickness. 3.3.5 he ounce is equivalent to 1/64 inch.) c Stitch tearing strength.- When tested as specified in 4.3, no
11、t less 3.3.6 Shrinkage temperature.- The leather shall have a minimum shrinkage 3.4 Chemical requirements .- temperature of 99OC when tested as specified in 4.3. 3.4.1 The leather shall conform to the chemical requirements of table I when tested 88 specified in 4.3. TABLE I.- Chemical requirements C
12、haracteris tic Minimum Maximum Chloroform - soluble material 3.0 percent &/ 12.0 Chromic &de, percent L/ 3 ,O 7.0 pH value 3.0 4.5 - i/ Calculated on the moisture free basis. 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-L-43704 3 - W 9999906
13、 0444384 O I - . MIL-G43704 3.4.2 Paranitrophenol.- Unless otherwise specified (see 6.2), the leather shall contain not less than 0.18 percent nor more than 0.70 percent paranitro- phenol fungicide when tested as specified in 4.3. 3.5 Workmanship.- The leather shall conform to the quality and grade
14、of The occurrence of defects shall product established by this specification. not exceed the applicable acceptable quality levels. 4. QUALITP ASSURANCE PRWSIONS 4.1 Responsibility for inspection.- Unless otherwise specified in the contract or purchase order, the supplier is responsible for tlie perf
15、ormance of all inspection requirements as specified herein. specified in the contract or order, the supplier may use his awn or amy other facilities suitable for the performance of the inspection requir-nts speci- fied herein, unless disapproved by the Government. The Government reserves the right t
16、o perform any of the inspections set forth in the specification where such inspections are deemed necessary to assure supplies and semices conform to prescribed requirements. 4.1.1 Certificate of compliance.- Where certificates of compliance are submitted, the Government reserves the right to check
17、test such items to determine the validity of the certification. Except as otherwise 4.2 Inspection.- Sampling for inspection shall be performed in accordance with FED-STD-3ll, except when otherwise indicated hereinafter. 4.2.1 Component and material inspection.- In accordance with 4.1 above, compone
18、nts and materials shall be tested in accordance with all the require- ments of referenced specifications, drawings and standards, unless otherwise excluded, amended, modified, or qualified in this specification or applicable purchase document. 4.2.2 Examination of the end item.- The classification o
19、f defects found during the examination of the leather for visual and dimensional characteristics shall be in accordance with 4.2.2.1 and 4.2.2.2. The sample unit for these examinations shall be one side. one side. Sampling for these examinations shall be performed in accordance with FED-STD-311, exc
20、ept that a sample size of 15 and a rejection number of 2 shall be applicable for thickness determinations on lots consisting of 91 or more sides. characteristics, but the same sample may be used for each examinatlion. The lot size shall be expressed in units of Separate examinations shall be perform
21、ed for visual and dimensional 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-L-43704 3 M 9977706 O444385 2 1 P MIL-L-43 704 4.2.2.1 Examination for visual characteristics .- Examine Defect . . Trim- Not in the form bf sides. Color Finish Not a
22、s specified or not uniform. Does not penetrate grain and flesh side. Evidence that leather has been redyed or refinished to cover unspecified color. Finish not smooth. Dull finish. Finish peeled, chipped or tacky. Grain snuffed or buffed. Finish missing . Quality of leather Cut, hole, open or badly
23、healed scratch, tear, stain, deep fat wrinkle, heavy vein, hip mark, rough shoulder, coarse grain, pipey area, loose flesh or other surface imperfection which individually or collectively impair the cutting value of more than 10 percent of the area of the leather. 4.2.2.2 Examination for dimensional
24、 characteristics .- Ex amine Defect Area (expressed in Less than area marked on leather. terms of square feet) Area exceeds 25. square feet. Marking Thickness L/ Omitted, illegible or not in area specified. Less than 3-1/2 ounces or greater than 4-3/4 ounces. - l/ Thickness shall be determined in ac
25、cordance with method 1011 of FED-STD-311 except that no individual thickness measurement shall be less than the minimum or greater than the maximum specified. 4.2.3 Examination of preparation for delivery requirements .- An examination shall be made in accordance with the provisions of ML-L-43432 to
26、 determine that packaging, packing and marking comply with the section 5 requirements of this specification. 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-L-43704 4.3 End item testing.- The methods of testing specified in FED-STD-311 wherever
27、 applicable and as listed .in table II, shall be followed. procedure and location from which the sample unit is to be obtained shall be in accordance with FED-STD-311*. values utilized in expressing the. final result. The lot shall be rejected . i any one of the following conditions exist: Sampling
28、Al1 test reports .shall contain the individual a. b. C. Any test failure occurs for stitch tearing strength. More than one test failure occurs for shrinkage temperature. Any composite test result fails to meet the specified requirement. TABLE II .- End item testing Requirement applicable to : Requir
29、ement Test Sample Characteris tic paragraph method unit Composite Material identi- f ication Tannage Finish Stitch tearing strength Shrinkage temperature Chlorof om-solub le material Chromic oxide pH value Paranitr ophenol 3.1 3.2 3.3.3 3.3.5 3.3.6 3.4.1 3.4.1 3.4.1 3.4.2 - i/ - i/ - i/ 2151 7011 63
30、41 6515 6621 6711 Unless otherwise specified, a certificate of compliance shall be submitted and will be acceptable Tor the requirement stated. 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-L-43704 83 W 7779706 0444387 b W r P MIL-L- 4370 4 5
31、, PREPARATION FOR DELIVERY 5.1 Packaging.- Packaging shall be ievel A orC as specified (see 6.2). 5.1.1 Levels A and C.- Leather shall be packaged in accordance with the applicable requirements of MIL-L-43432. 5.2 Packing.- Packing shall be level A, B, or C as specified (see 6.2). 5.2.1 Levels A, B,
32、 and C.- Leather shal be packed in accordance with the applicable requirements of MIL-L-43432. 5.3 Marking.- In addition to any special marking required by the contract or order, interior packages and shipping containers shall be marked in accordance with MIL-L-43432. 6. NOTES 6.1 Intended use.- The
33、 cattlehide is intended for use as upper leather in mens oxford safety shoes. 6.2 Ordering data.- Procurement documents should specify the following: a. b. C. Title, number and date of this specification. When paranitrophenol fungicide is not required (see 3.4.2). Selection of applicable levels of packaging and packing (see 5.1 and 5.2) custodians : Preparing activity: Army-m .Navy - SA Air Force - 11 Review activities: Army-m Navy - SA, MC Air Force - 82 Army - GL Project No. 8330-0127 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
