1、r . n 1 MIL-C-83450A 83 m 9999906 0474971 O m MIL-C-83450A( US AF) 14 September 1978 SUPERSEDING MIL-C-83450(USAF) 2 October 1974 MILITARY SPECIFICATION CLOTH, META-ARAMID WARP, META-MIID/ PARA-AWD FILLING, META-ARAMT.D/NOVOLOID FILLING, NAPPED This specification is approved for use by Air Force Mat
2、erials Laboratory, Department of the Air Force, and is available for use by all Departmentsand Agencies of the Department of . Defense. 1. SCOPE 1.1 Scope. This specification covers the requirements for non-melting cloth used in the manufacture of special flying clothing. 2. APPLICABLE DOCUMENTS 2.1
3、 Issues of documents. The following documents, of the issue in effect on date of invitation for bids or request for proposal, form a part of this specification to the extent specified herein. SPECIFICATIONS FEDERAL PPP-P-1133 Packaging and Packing of Synthetic Fiber Fabric Beneficial comments (recom
4、mendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to:. AFML/MXA, WPAFB, O. 45433, by using the self- addressed Standardization Document Improvement Proposal (DD Form 1426 appearing at the end of this document or by letter. FSC
5、 8305 Licensed by Information Handling ServicesMIL-C-83450A 3 W 999790b 0474972 2 MIL-C-83450A(USAF) STANDARDS FEDERAL FED-STD-4 Glossary of Federal Imperfections FED-STD-19 1 Textile Test Methods MILITARY MIL-STD-105 Sampling Procedures and Table for Inspection by Attributes (Copies of specificatio
6、ns, 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 contracting officer.) 3. REQUIREMENTS 3.1 Standard sample for nap. shall match the degree of nap of the standard sampl
7、e. The napped side of the finished cloth 3.2 Material. 3.2.1 Warp. The yam shall be 200/100 denier continuous filament, meta-aramid. when tested as specified in 4.3. The yam shall not char at temperature less than 675F 3.2.2 Filling. The yam shall be 200/100 denier continuous filament meta-aramid an
8、d a 50/50 staple fiber blend of meta-aramid and para- aramid intermediate modulus, or meta-Aramid and novoloid, 12 s - + 2 cc. 3.3 Color. The color of the continuous filament aramid shall be Sage Green 1565, solution dyed yam. The color of all the staple fibers shall be natural. 3.4 Physical require
9、ments. The physical requirements of the finished cloth shall be as specified in Table I when tested as specified in 4.3. 3.4.1 Weave. The weave shall be a 8 harness warp face stain, 5 counter as relates to the staple filling yam. I The weave shall be 1 up, 3 down right twill for two ends and 3 down,
10、 1 up reversal for two ends as relates-to the continuous filling aramid. woven two picks continuous filament and two picks staple. The fabric shall be 2 Licensed by Information Handling Services. . MIL-C-83450A 83 W 9999906 O474973 4 W Characteristics Weight (oz. /sq. yd.) Yarns per inch (minimum) W
11、arp Filling (continuous filament) Filling (staple) Minimum Maximum Warp Filling Warp Filling Turns per inch (Continuous filament yarn) Breaking strength Tearing strength (lbs. ) (minimum) MIL-C-8 3 4 50A (USAF) Table I. Physical requirements. Requirements 9.0 5 0.5 105 65 65 4.0 8.0 150 100 20 20 3.
12、4.2 - Width. Unless otherwise specified (see 6.2), the width shall be 54 inches inclusive of selvages. 3.5 Finishing. The cloth shall be desized, scoured, heat set and given a durable antistatic finish. The filling side of the fabric shall be napped with two passes through the machine. 4. QUALITY AS
13、SURANCE 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 otherwise specified in the contract or order, the supplier may use his own
14、 or any other facilities suitable for the performance of the inspection requirements specified herein, unless disapproved by the Government. The Government reserves the right to perform any of the inspections set forth in the specification where such inspections are deemed necessary to assure suppli
15、es and services conform to prescribed requirements. 4.1.1 Certificate of compliance. Where certificates of compliance are submitted the Government reserves the right to check test such items to determine the validity of the certification, 4.2 Inspection. Sampling for inspection shall be performed in
16、 accordance with MIL-STD-105, except where otherwise indicated hereinafter. 3 Licensed by Information Handling ServicesMIL-C-3450A 83 m 999990b 0474974 b m 7 4.2.1 Examination of the end item. Examination of the end item shall be in accordance with the provisions of 4.2.1.1 through 4.3. 4.2.1.1 Yard
17、-by-yard examination. Each roll in the sample shall be examined on the face side only. does not exceed 100 yards, the entire yardage in the roll shall be examined. 100 yards shall be examined. All defects as defined in Section III of FED-STD-4 which are clearly noticeable at normal inspection distan
18、ce (3 feet) shall be scored and assigned demerit points as listed in 4.2.1.1.1 except as follows: When the total yardage in the roll When the total yardage in the roll exceeds 100 yards, only a. Only coarse yarns that exceed twice the normal yam diameter shall be scored. b. Mixed filling (shade bar)
19、 shall be scored only when resulting from wrong ply, wrong twist in the yarn, or off shade yarn. c. Only knots and slubs which exceed limits shown in Figure 1 of FED-STD-4 shall be scored. No linear yard (increments of 1 yard on the measuring device of the inspection machine) from any one roll withi
20、n the sample shall be penalized more than 4 points. The sample size shall be 20 rolls selected from 20 containers. The lot shall be unacceptable if the points per 100 square yards of the total yardage examined exceeds 50 points, The lot shall be unacceptable if the points per 100 square yards of two
21、 or more individual rolls exceeds 75 points. one roll exceeds 75 points per 100 square yards a second sample of 20 rolls shall be examined only for individual roll quality examina- tion. second sample exceeds 75 points per 100 square yards. Point computa- tion for lot quality and individual roll qua
22、lity shall be as follows: If The lot shall be unacceptable if one or more rolls in the Points per Contracted width of cloth (inches) X total yards inspected 100 sq yds - Total points scored in sample X 3600 4.2.1.1.1 Demerit points. Demerit points shall be assigned as follows : 4 Licensed by Informa
23、tion Handling ServicesMIL-C-83450A 3 9999906 0474975 For defects 3 inches or less in any dimension - one point For defects exceeding 3 inches, but not exceeding 6 inches in any dimension - two points For defects exceeding 6 inches, but not exceeding 9 inches in any dimension - three points For defec
24、ts exceeding 9 inches in any dimension - four points, The following defects, when present, shall be.scored four points for each yard in which they occur: Baggy, ridgy or wavy cloth Width less than specified Uneven Weaving, 4.3 Testing of the end item. FED-STD-191, wherever applicable as listed in Ta
25、ble II shall be followed. except where otherwise Specified, apply to the results of the deter- minations made on a sample unit for test purposes as specified in.the applicable test method. The sample unit shall be 5 continuous yards, full width, of the finished cloth. individual values utilized in e
26、xpressing the final result. size shall be expressed in units of 1 yard. The lot shall be unacceptable if one or more units fail to meet any requirement specified. The sample size (number of sample units) shall be as follows: The methods of testing specified in The physical and chemical values specif
27、ied in Section 3, All test reports shall contain the The lot Lot size (yards) Sample size 800 or less 801 thru 22,000 22,001 and over 5 2 3 5 Licensed by Information Handling ServicesMIL-C-83450A 3 777770b 0474776 T MIL-C- 83 4 SOA( USAF) Table IL. Test methods. Character is tic Aramid Identificatio
28、n . Charring Denier Novolo id Identification Weight Yarns per inch Warp Filling Tams per inch Breaking strength Warp Filling Warp Filling Tearing strength Requirement Paragraph 3.2.1 & 3.2.2 3.2.1 3.2.1 3.2.2 3.4 3.4 3.4 3.4 3.4 3.4 3.4 3.4 Test method - i/ - i/ - 11 - i/ 5041 5050 5050 4052 5100 51
29、00 5134 5 134 i/ Unless otherwise specified, a certificate of compliance shall be submitted and will be acceptable for the stated requirements. 5. PACKAGING 5.1 Put-up and packaging. C as specified (see 6.2). Put-up and packaging shall be level A or 5.1.1 Level A and C. accordance with the applicabl
30、e requirements of PPP-P-1133. The cloth shall be put-up and packaged in 5.2 Packing. 6.2). Packing shall be level A, B, or C as specified (see 5.2.1 Levels A, B, and C. The cloth shall be packed in accordance with the applicable requirements of PPP-P-1133. 5.3 Marking. contract or order, shipments s
31、hall be marked in accordance with PPP-P-1133. In addition to any special marking required by the 6 Licensed by Information Handling ServicesY L MIL-C-83450A 3 W 9999906 0474977 1 W 6. NOTES 6.1 Intended use. The cloth covered by this specification is intended for use in the fabrication of flight clo
32、thing. 6.2 Ordering data. Procurement documents should specify the following: a. Title, number and date of this specification. b. Width (see 3.4.2). c. Selection of applicable levels of packaging and packing (see 5.1 and 5.2). 6.3 nominal machine width of 82 inches. The fabric has been successfully woven on a Dornier loom of a Custodian: Air Force - 11 Preparing Activity: Air Force - 11 Proj ect No. 8305-F511 * U.S. GOVERNMENT PRINTING OFFICE: 1978 - 703-122/4510 7 Licensed by Information Handling Services
