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
25、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 rope for further discussion on measurement techniques. TABLE V DIAMETER TOLERANCE OF CARBON STEEL WIRE USED FOR ROPES Diameter Range Uncoated Zinc-Coa
26、ted at Finished Size mm inch Mm inch mm inch 0.25-0.61 0.010-0.024 +0.008 -0.020 +0.003 -0.007 +0.013 -0.025 +0.0005 -0.0010 0.62-1.50 0.025-0.059 +0.013 -0.025 +0.005 -0.010 +0.025 -0.051 +0.0010 -0.0020 1.51-2.34 0.060-0.092 +0.025 -0.025 +0.010 -0.010 +0.038 -0.064 +0.0015 -0.0025 2.35-2.90 0.093
27、-0.141 +0.025 -0.038 +0.010 -0.015 +0.051 -0.076 +0.0020 -0.0030 TABLE VI MAXIMUM OVALITY OF WIRE ROPES Nominal Diameter Permissible Ovality*, max mm Inch wire core rope, % fiber core rope, % Up to 3 Up to 0.118 7 - 3-5 0.118-0.197 6 8 5-7 0.197-0.276 5 7 Over 7 Over 0.276 4 6 * The variation in fou
28、r diameter measurements will not exceed the ovality requirements 4.5 Additional Requirements 4.5.1. For wire ropes, no strand splices or welded joints will be allowed in completed strands. No wire joints (e.g. welds) will be allowed in a 3-wire strand. In strands containing more than three wires, wi
29、re joints are not allowed to be more frequent than one weld in any 46 m (150 feet) of completed strand. 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
30、 Standards. Suppliers are required to assume all patent liability. 2016 by Navistar, Inc. OCTOBER 2016 Page 5 of 9 For aircraft quality strands containing 19 or more wires, joints will be well spaced and not less than 61 m (200 feet) apart. 4.5.2. Requirements for the strength, surface coating, and
31、ending procedure for all ropes will be denoted on the design drawings. 5.0 QUALITY All product supplied shall be clean and free from dirt, oils sharp edges, or defects harmful to product performance. The supplier should be capable of providing statistical evidence that the material has been produced
32、 within process control limits established by the supplier for this product and that the process is capable of meeting the requirements of this specification. 6.0 QUALIFICATION Engineering qualification of sources is required in advance of production shipments. Samples shall be accompanied by test d
33、ata certifying that all requirements of the specification have been met. 6.1 Quality Control Plan A Quality Control Plan for products supplied to the requirements of this specification will be established by mutual agreement between NAVISTAR and the supplier. Unless specific exception is noted, the
34、following characteristics, where applicable*, shall be included in the plan as features for management by statistical process control.* * Other characteristics for inclusion in the control plan may be specified on the engineering drawing and/or purchase order. * See NAVISTAR Engineering Design Stand
35、ard A-16 7.0 SOURCE APPROVAL AND QUALITY CONTROL 7.1 Supplier Requirements All suppliers to NAVISTAR are required to be registered to ISO 9001 Quality System Requirements. NAVISTAR will also accept TS-16949 registration as long as the supplier can also fulfill all AIAG PPAP (Production Part Approval
36、 Process) documentation and approval requirements. Suppliers must maintain their certification with an accredited registrar and must furnish copies of registration certificates to their Corporate Buyer upon request. 7.2 Approval Parts supplied against contracts or purchase orders citing this specifi
37、cation shall be equivalent in all respects to those samples which were approved by the purchaser. No changes in formulation or processing practices are permitted without approval. In the event that changes in material, properties, processing practices, construction, color, or labeling of the product
38、 are required, the supplier shall notify NAVISTAR Materials Engineering and Purchasing and Supplier Development of the proposed change(s). Test data indicating conformance to all requirements of this specification, test samples, and new or amended or updated Material Safety Data Sheet(s) (MSDS), in
39、accordance with CFR Title 29, Part 1910 shall be submitted with the request for change. 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. Supp
40、liers are required to assume all patent liability. 2016 by Navistar, Inc. OCTOBER 2016 Page 6 of 9 7.3 Process Control The supplier shall either, perform and report results of tests on specific lots of parts produced using ISO 9001 or TS-16949 guidelines, or provide statistical evidence of the lot h
41、aving been produced in a state of statistical control and with a process capable of providing all required properties. The part supplier and the quality control manager of the using NAVISTAR plant may determine testing and reporting requirements on specific products. 8.0 SHIPPING AND HANDLING Shippi
42、ng and identification shall be in accordance with NAVISTAR Supplier Packing and Shipping Standard D-13. Parts shall be packaged so as to avoid any damage in shipment detrimental to the appearance of the part. 9.0 DESIGNATION ON DRAWINGS Specification of steel wire on drawings and purchase orders wil
43、l be by the size and type of wire. Any other necessary information, such as a particular steel grade or strength requirements of ropes or ended cables, will also be included. Examples: Bright Basic Wire, MPAPS A-8 Wire Rope, Aircraft Quality, MPAPS A-8 Steel wire, Zinc Coated, Hard, Class 1, MPAPS A
44、-8 10.0 TECHNICAL INFORMATION For further information related to the technical content of this specification, contact: Suppliers may purchase controlled copies of this specification by contacting: Materials Engineering and Technology Dept. 10400 W. North Avenue Melrose Park, IL 60160 E-mail: Materia
45、lsEngineeringN IHS Markit. 15 Inverness Way East Englewood CO 80112-5776 Phone: 1-800-854-7179 E-mail: AutomotiveIHS.com Website: http:/ 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 pe
46、rmission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 2016 by Navistar, Inc. OCTOBER 2016 Page 7 of 9 A.0 GENERAL INFORMATION (Not a requirement) A.1 TYPICAL MECHANICAL PROPERTIES Typical mechanical properties for wire are shown in Tables I and II. TABLE
47、 I TYPICAL TENSILE STRENGTH, BRIGHT BASIC WIRE, HARD DRAWN AND ANNEALED IN PROCESS Wire Size Typical Tensile Strength, MPa Wire Size Typical Tensile Strength, 103 steel wire gage diameter, mm diameter, inch SAE Designation SAE Designation 1006 1008 1010 1012 1018 1006 1008 1010 1012 1018 - 10.32 thr
48、u 19.05* 407-441 427-455 462-496 483-517 517-552 0.4062 thru 0.7500* 59- 64 62- 66 67- 72 70- 75 75- 80 - 6.747 thru 9.922 441-469 455-483 496-517 517-538 552-572 0.2656 thru 0.3906 64- 68 66- 70 72- 75 75- 78 80- 83 - 6.350 469 490 531 545 586 0.2500 68 71 77 79 85 - 5.953 476 496 538 552 593 0.2344 69 72 78 80 86 - 5.556 483 503 538 558 600 0.2188 70 73 78
