NAVISTAR MPAPS A-8-2015 Steel Wire.pdf
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1、This document is restricted and may not be sent outside Navistar, Inc. or reproduced without permission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 2015 by Navistar, Inc. JUNE 2015 Page 1 of 9 NAVISTAR, INC. Material, Parts, and Process Specifications (
2、MPAPS) NUMBER: MPAPS- A-8 Former Designation: CEMS A-8 TITLE: Steel Wire CURRENT REV No.: 1506 DATE: June 2015 WRITTEN/EDITED BY: W. Cook APPROVED BY: R. Goluch SUPERSEDES: October 2001 PRINTED COPIES OF THIS DOCUMENT MUST BE VERIFIED FOR CURRENT REVISION This specification may involve hazardous mat
3、erials, equipment, and procedures. This specification does not purport to address all of the safety issues associated with its use. The user is responsible to consult appropriate safety and health practices and to determine the applicability of regulatory limits prior to use. Change Notice: Eliminat
4、ed “Bundling wire” and “Industrial Quality Rod” classifications; Added applicable ASTM standard references; Editoral Changes; Adopted MPAPS Format. 1.0 APPLICATION Wire Rods, Coarse Round Wire, and Finished Wire and Rope Wire made of carbon, alloy and stainless Steel. Requirements for steel wire not
5、 included in this specification are in the following Engineering Material Specifications: Steel Wire Springs MPAPS A-9 2.0 SCOPE This specification covers requirements for general purpose and miscellaneous grades of steel wire and wire rods and ropes used in the Companys products. Unless otherwise s
6、pecified, the appropriate ASTM Standards will apply to this specification. 3.0 REFERENCE DOCUMENTS Unless otherwise specified, the latest issue of all referenced standards shall apply. The following standards, specifications and regulations are referenced in this specification. Quality System Standa
7、rd ISO 9001 or TS-16949 CFR Title 29, Part 1910 NAVISTAR Manufacturing Std. MS-D-13 NAVISTAR Engineering Design Std A-16 NAVISTAR MPAPS B-50 Mil Spec W6940 ASTM A1007 ASTM A853 ASTM A368 ASTM A555 ASTM A510/510M ASTM A752/752M 4.0 REQUIREMENTS Steel wire is classified by its usage and chemical compo
8、sition. 4.1 Wire Classification and Chemical Composition Steel wire and wire rods and ropes purchased to this specification will conform to the required analysis for the steel shown in Table I. NUMBER: MPAPS A-8 TITLE Steel Wire CURRENT ISSUE DATE: June 2015 This document is restricted and may not b
9、e sent outside Navistar, Inc. or reproduced without permission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 2015 by Navistar, Inc. JUNE 2015 Page 2 of 9 TABLE I CLASSIFICATION, CHEMICAL COMPOSITION AND DESCRIPTION OF WIRE TYPES Type of Wire Steel Designa
10、tion, ASTM Std Description Bright basic 1006, 1008,1010,1015, 1018,1020 A510 A853 Low carbon steel wire, hard drawn dry without any treatment or processing to change normal properties obtained by cold drawing. Alloy Steel A752 Alloy steel rod and wire, for applications requiring improved properties
11、Rope wire: Uncoated Steel Standard carbon Steel* except: P 0.045% A510 A1007 Wire intended for rope fabrication. Steel is selected and carefully prepared to produce a high tensile strength wire with superior toughness. Refined drawing techniques are used to produce rope wire from thermally treated r
12、ods or wire. Rope wire: Zinc-coated steel A510 A1007 Wire for rope fabrication is zinc-coated to finished size or coated and drawing to finished size. The zinc coating can be applied by a hot dip or electrolytic process. Rope wire: stainless steel Types: 302, 304 or 316 A555 A368 Corrosion and/or he
13、at resistant wire used for rope fabrication. Special drawing may be required to satisfy special fatigue strength requirements. * Specific steel grade dependent upon flexibility and strength requirements of finished products. 4.2 Material Requirements Unless otherwise specified, materials supplied sh
14、all conform to the general requirements of ASTM A510, ASTM A752 or ASTM A555 as applicable. 4.3 Surface And Mechanical Requirements Steel wire and rope wire purchased to this specification will conform to the surface properties shown in Table II and the mechanical requirements of ASTM A853 and A1007
15、 respectively or A368 (Stainless Steel) or (See Appendix for typical mechanical properties). NUMBER: MPAPS A-8 TITLE Steel Wire CURRENT ISSUE DATE: June 2015 This document is restricted and may not be sent outside Navistar, Inc. or reproduced without permission from Corporate Technical Standards. Su
16、ppliers are required to assume all patent liability. 2015 by Navistar, Inc. JUNE 2015 Page 3 of 9 TABLE II SURFACE AND MECHANICAL REQUIREMENTS Type of Wire Surface and Mechanical Requirements bright basic Surface shall be bright and free from seams or scratches which would make wire unsuitable for g
17、eneral use. Wire shall have no appreciable cracks after being cold bent flat on itself and hammering down to a thickness of one diameter. bundling Wire shall withstand tight twisting on inself in rope-like strings. It shall not show defects or spring back when one piece is closely wound on another s
18、traight piece. rope wire The surface shall not contain imperfections inconsistent with good commercial practice. No cracks shall be induced by wrapping the wire twice in a close helix about a mandrel three times the nominal diameter of the wire. If the wire is zinc coated, no zinc shall be removed b
19、y rubbing with bare fingers after the coated wire is wrapped twice in a close helix about a mandrel five times the nominal wire diameter. Tensile strength is dependent on grade, thus, specific properties should comply with requirements on drawings. 4.4 Dimensional Tolerances Wire purchased to this s
20、pecification will meet the appropriate dimensional tolerances shown in Tables III and IV. TABLE III DIAMETER AND OUT-OF-ROUND* TOLERANCES, UNCOATED WIRE Wire Diameter, mm, incl Tolerance, plus or minus, mm Wire Diameter, inch, incl Tolerance, plus or minus, inch Round wire in coils Straightened and
21、cut wire 0.89 to under 1.93 over 1.93 to 3.77 over 3.77 to 12.69 12.70 and over 0.02 0.05 0.05 0.08 0.02 0.05 0.08 0.10 0.035 to under 0.076 over 0.076 to 0.148 over 0.148 to 0.499 0.500 and over 0.001 0.002 0.002 0.003 0.001 0.002 0.003 0.004 * Permissible out-of-round: 50% of the total gage tolera
22、nce. TABLE IV LENGTH TOLERANCES, UNCOATED, STRAIGHTENED AND CUT WIRE Cut Length, m Tolerances, plus or minus, mm Cut Length, ft Tolerance, Plus or minus, Inch Under 0.91 0.91 to 3.66, incl over 3.66 1.5 2.3 3.0 Under 3 3 to 12, incl over 12 0.06 0.09 0.12 NUMBER: MPAPS A-8 TITLE Steel Wire CURRENT I
23、SSUE DATE: June 2015 This document is restricted and may not be sent outside Navistar, Inc. or reproduced without permission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 2015 by Navistar, Inc. JUNE 2015 Page 4 of 9 4.5 For aircraft quality wire ropes (zi
24、nc-coated, single strand), the dimensions and tolerances will be consistent with the latest issue of MIL-W6940. Stainless steel ropes will conform to ASTM A368. Dimensions and tolerances for individual wires and wire ropes are listed in Tables V and VI, respectively. See Appendix section on wire rop
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