NAVISTAR MPAPS A-8-2016 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. 2016by Navistar, Inc. OCTOBER 2016 Page 1 of 9 NAVISTAR, INC. Material, Parts, and Process Specification
2、s (MPAPS) NUMBER: MPAPS A-8 Former Designation: CEMS A-8 TITLE: Steel Wire CURRENT REV No.: 1610 DATE: Oct. 2016 WRITTEN/EDITED BY: W. Cook APPROVED BY: R. Goluch SUPERSEDES: 1506 June 2015 PRINTED COPIES OF THIS DOCUMENT MUST BE VERIFIED FOR CURRENT REVISION This specification may involve hazardous
3、 materials, 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. 1.0 APPLICATION Wir
4、e Rods, Coarse Round Wire, and Finished Wire and Rope Wire made of carbon, alloy and stainless Steel. Requirements for steel wire not included in this specification are in the following Engineering Material Specifications: Steel Wire Springs MPAPS A-9 2.0 SCOPE This specification covers requirements
5、 for general purpose and miscellaneous grades of steel wire and wire rods and ropes used in the Companys products. Unless otherwise specified, the appropriate ASTM Standards will apply to this specification. 3.0 REFERENCE DOCUMENTS Unless otherwise specified, the latest issue of all referenced stand
6、ards shall apply. The following standards, specifications and regulations are referenced in this specification. Quality System Standard ISO 9001 or TS-16949 CFR Title 29, Part 1910 NAVISTAR Supplier Packing and Shipping Std. D-13 NAVISTAR Engineering Design Std A-16 NAVISTAR MPAPS B-50 Mil Spec W694
7、0 ASTM A641/641M 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 composition. 4.1 Wire Classification and Chemical Composition Steel wire and wire rods and ropes purchased to this specification will conform to
8、 the required analysis for the steel shown in Table I. NUMBER: MPAPS A-8 TITLE Steel Wire CURRENT ISSUE DATE: October 2016 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
9、patent liability. 2016 by Navistar, Inc. OCTOBER 2016 Page 2 of 9 TABLE I CLASSIFICATION, CHEMICAL COMPOSITION AND DESCRIPTION OF WIRE TYPES Type of Wire SAE Steel Designation; ASTM Std Description Bright basic 1006, 1008,1010,1015, 1018,1020 A510 A853 Low carbon steel wire, hard drawn dry without a
10、ny treatment or processing to change normal properties obtained by cold drawing. Alloy Steel A752 Alloy steel rod and wire, for applications requiring improved properties Zinc Coated Steel A641 Low carbon steel wire, galvanized. Rope wire: Uncoated Steel Standard carbon Steel* except: P 0.045% A510
11、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 rods or wire. Rope wire: Zinc-coated steel A510 A1007 Wire for rope fabr
12、ication 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 heat resistant wire used for rope fabrication. Special drawing may be req
13、uired 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 shall conform to the general requirements of ASTM A510, ASTM A752 ASTM A6
14、41 or ASTM A555 as applicable. 4.3 Surface And Mechanical Requirements 4.3.1 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 respectively or A368 (Stainless Steel). See Appendix f
15、or typical mechanical properties. 4.3.2 Zinc Coated steel wire will have the surface properties and mechanical requirements of ASTM A641. NUMBER: MPAPS A-8 TITLE Steel Wire CURRENT ISSUE DATE: October 2016 This document is restricted and may not be sent outside Navistar, Inc. or reproduced without p
16、ermission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 2016 by Navistar, Inc. OCTOBER 2016 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
17、or scratches which would make wire unsuitable for general use. Wire shall have no appreciable cracks after being cold bent flat on itself and hammering down to a thickness of one diameter. Alloy Steel Per ASTM A752 Zinc Coated Steel Temper (soft, medium or hard) and Coating Class may be specified, a
18、s per ASTM A641, in the call out. If no Coating Class is specified, minimum coating weight shall be 55g/m2 and the full surface shall be covered in zinc. rope wire The surface shall not contain imperfections inconsistent with good commercial practice. No cracks shall be induced by wrapping the wire
19、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 by 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 dep
20、endent on grade, thus, specific properties should comply with requirements on drawings. 4.4 Dimensional Tolerances 4.4.1 Wire purchased to this specification will meet the appropriate dimensional tolerances shown in Tables III and IV. TABLE III DIAMETER AND OUT-OF-ROUND* TOLERANCES, UNCOATED WIRE Wi
21、re Diameter, mm, incl Tolerance, plus or minus, mm Wire Diameter, inch, incl Tolerance, plus or minus, inch Round wire in coils Straightened and 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
22、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 tolerance. NUMBER: MPAPS A-8 TITLE Steel Wire CURRENT ISSUE DATE: October 2016 This document is restricted and may not be sent outside Navistar, Inc. or reproduc
23、ed without permission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 2016 by Navistar, Inc. OCTOBER 2016 Page 4 of 9 TABLE IV LENGTH TOLERANCES, UNCOATED, STRAIGHTENED AND CUT WIRE Cut Length, M Tolerances, plus or minus, mm Cut Length, ft Tolerance, Plus
24、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 4.4.2 For aircraft quality wire ropes (zinc-coated, single strand), the dimensions and tolerances will be consistent with the latest issue of MIL-W6940. Stainless steel ropes will conform
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