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1、GM GtlL7lM 92 - 900b379 0008LO9 327 m I GENERAL MOTORS ENGINEERING STANDARDS I Materials and Processes - Metals I STITCHING WIRE GM171M 1 SCOPE. This specification covers steel wire (round and flat) suitable for use in stitching (stapling) metallic or non- metallic materials. 1.1 Material may be des
2、ignated in either in.-lb. or metric (SI) units. Properties and dimensions consistent with units specified apply. 2 CHEMICAL COMPOSITION. The steel used shall be of open hearth, basic oxygen, or electric furnace grade. The chemical composition shall be such as to insure that satisfac- tory material w
3、ill be produced in the various grades specified herein. 3 MECHANICAL PROPERTIES. Wire furnished to this specification shall be the grade specified by the purchaser, and shall conform to the properties shown in Table 1. TABLE 1 - MECHANICAL PROPERTIES able 1A - Metric (SI) Units lhble 1B - Customary
4、Units Grade 1 90 1 130 1 170 1 200 1 230 I 260 I 290 I 300 Tensile 80 120 160 190 220 250 290 320 ksi l?o lie lto :2”0 2Fo 2to 3;o 3:o 3.1 BENDING. Grade 90 (flatwire) shall bend flat on itself without fracturing. Grades 130 thru 330 (round wire) shall bend 180” over a one diameter mandrel without f
5、racture. 3.2 Finish coatings shall neither flake or peel when wire is wound around a mandrel equal to the wire thickness. 4 FORM, SIZE AND QUALITY. 4.1 GRADE 90. Normally used in stitching nonmetallic materials. Applicable size to be specified by purchaser, Size mm 2.65 by 0.65 2.60 by 0.45 1.50 by
6、0.70 2.60 by 0.60 2.00 by 0.55 1.50 by 0.60 2.60 by 0.50 1.90 by 0.90 1.50 by 0.50 Size, inch 0.105 by 0.025 0.103 by 0.017 0.060 by 0.028 0.103 by 0.023 0.078 by 0.022 0.060 by 0.024 0.103 by 0.020 0.074 by 0.037 0.060 by 0.020 Tolerances, mm Width = . . . . . . . . . . . . . . . . . . . . . . . .
7、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +0.05, -0.02 Thickness = . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ZbO.013 Tolerance, inch Width = . . . . . . . . . . . . . . . . . . . . . .
8、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +0.002 -0.008 Thickness = . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ti.0005 4.2 GRADES 130 THROUGH 330. Normally used for metal stitching, are as f
9、ollows: Size, mm 0.50 0.65 0.90 1.00 1.20 1.30 Size, inch 0.020 0.026 0.035 0.041 0.048 0.051 0.053 Size Tolerances - M.025 mm or (0.001 in.) with an out-of-round tolerance of one-half the total size tolerance. 4.3 The wire shall not be kinked or improperly cast. Each core shaIl be one continuous le
10、ngth, properly wound. 4.4 Protective coatings, as designated by purchaser, shall con- form to the requirements listed in Table 2. 5 PACKING AND MARKING. All grades of wire shall be wound on paper cores 65 mm, 70 mm or inside diameter by 47 to 50 mm or wide for detachable head spools. A core of wire
11、shall weigh approximately 2.5, 5, 10 kg. Each core shall have a tag or label carrying the maker s name, GM specifica- tion number, grade number, size and finish. Cores shall be packed in substantial cartons containing 25, 50 kg or of wire, as specified. All containers shall be legibly and durably ma
12、rked with the following information: Maker s name, GM specification number, net weight, grade number, size, number of cores, and fish. 6 INITIAL SOURCE APPROVAL. No shipment shall be made by any supplier until representative initial production samples have been approved by materials engineering as m
13、eet- ing the requirements of this specification. 7 INSPECTION AND REJECTION. All shipments of material or parts under contract or purchase order manufac- tured to this specification shall be equivalent in every respect to the initial samples approved by material engineering. There shall be no change
14、s in either formulation or manufacturing processes permitted without prior notification and approval by material engineering. Lack of notification by the supplier con- stitutes grounds for rejection of any shipment. While samples may be taken from incoming shipments and checked for con- 0 CoMghi FEB
15、RUARY 1992 General Motws Corporation All Rights Reserved FEBRUARY 1992 PAGE 1 171M Copyright General Motors North America Provided by IHS under license with GM Licensee=IHS Employees/1111111001, User=Japan, IHS Not for Resale, 06/23/2008 20:58:53 MDTNo reproduction or networking permitted without li
16、cense from IHS -,-,- GM GflL7LM 92 W 9006379 OOOBLLO 049 - I GENERAL MOTORS ENGINEERING STANDARDS I Materials and Processes - Metals I STITCHING WIRE GM171M Rev Date Description 1 Div I D lo/80 Added Grade 130, Metric AEMS E 8/91 Editorial update MC formance to this specification, the supplier shall
17、 accept the responsibility for incoming shipments meeting this specifica- tion without dependence upon purchaser s inspection. 8 GENERAL INFORMATION. This specification was first issued in September 1946. The latest revisions include: TABLE 2 - PROTECTIVE COATING REQUIREMENTS Electra Rued, zn GM4342
18、M Code 2OU32 x x x x x x x x NO&C 32 h, min Gshnizcd, Rerolled x x x x x x.x None 16 h, mia Black Zinc Finish X x x x x x x 32 h, min 64h,min AiKdtTpElCCtfOPliltfd xx NOIIC lOOh,min NOTE: X = These finishes are commercially available in grades indicated. NOTE: XX q This wire Is commercially manufact
19、ured in 1.30 mm or 0.051 inch diameters only and has a zinc thickness of approximately 0.04 mm or 0.0015 inch. Q Copyright FEBRUARY 1992 Generd Motes Corpmticm All Flights i?eswed 171M PAGE 2 FEBRUARY 1992 Copyright General Motors North America Provided by IHS under license with GM Licensee=IHS Employees/1111111001, User=Japan, IHS Not for Resale, 06/23/2008 20:58:53 MDTNo reproduction or networking permitted without license from IHS -,-,-
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