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. 2018 by Navistar, Inc. FEBRUARY 2018 Page 1 of 22 NAVISTAR, INC. Material, Parts, and Process Specificati
2、ons (MPAPS) NUMBER: MPAPS L-6039 Former Designation: TMS-6039 TITLE: Rubber (TSR) Molding Compounds CURRENT REV No.: 1802 DATE: Feb. 2018 WRITTEN/EDITED BY: G. Svidron APPROVED BY: R. Goluch SUPERSEDES: Rev. 1608 Aug. 2016 PRINTED COPIES OF THIS DOCUMENT MUST BE VERIFIED FOR CURRENT REVISION This sp
3、ecification may involve hazardous 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
4、prior to use. 1.0 APPLICATION This specification covers thermoset rubber (TSR) molding compounds used in truck applications. These TSR compounds are generally molded or extruded and may contain recycled materials. For thermoplastic elastomers (TPR/TPE/TPU), see MPAPS L-6040. Note: Mount properties a
5、re listed in Table 8 some sections of which are in a restricted issue appendix, MPAPS L-6039-R. Contact Materials Engineering (referenced in Section 8.0) for further information. 1.1 Restricted Chemical Substances Effective January 1, 2007, all product supplied to the requirements of this specificat
6、ion must comply with the requirements of the MPAPS B-50 specification. 2.0 SCOPE This specification covers the general requirements, identification, inspection, property and performance requirements, quality plan, and source approval and quality control requirements for these TSR compounds. 2.1 Rubb
7、er Compound Designation - Description The TSR compounds covered in this specification may include several different types of polymer base, such as EPDM, NR, CSM, NBR, etc. Within each of these basic polymer groups, several different blends and curing treatments are available, and unless otherwise sp
8、ecified, may be used to provide the specified hardness and other material properties required for the part. A specific polymer may be specified within the material designation for the part. Upon approval of the prototype and/or PPAP samples, no changes in the polymer base, blend, curing treatment, o
9、r other processing variables shall be made without the approval of Materials Engineering and the Quality Department of the receiving plant. 2.1.1 TSR Prefix All rubber molding compounds provided to the requirements of this specification shall be designated with the TSR prefix. A specific polymer may
10、 or may not be specified in the material designation. These materials may contain recycled rubber (post-consumer recycled material, such as automotive tires) with prior Engineering approval. If industrial recyclate (pre-consumer recycled material) is included in the TSR compound, it shall be reporte
11、d separately from the post-consumer recycled content. NUMBER: MPAPS L-6039 TITLE: Rubber (TSR) Molding Compounds REVISION: 1802 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
12、 all patent liability. 2018 by Navistar, Inc. FEBRUARY 2018 Page 2 of 22 2.2 Suffix Designations Additional requirements for parts made from the rubber molding compound may be specified by adding a suffix to the compound designation. The suffix requirement is in addition to the normal durometer hard
13、ness and tensile requirements of the material designation and independent of the polymer base used for the part. The suffix designation follows and is separated from the TSR prefix by a “dash. In some cases more than one suffix requirement may be designated. An alternate method of assigning a sequen
14、tial number to new compounds has been added to facilitate development of parts while parameters may yet change. 2.2.1 Suffix-H: This designates a heat- and weather-resistant TSR material. Unless otherwise specified on the Engineering drawing, product supplied shall meet the heat resistance and aged
15、heat adhesion requirements as specified in Tables 4-9. Minimal oil resistance is expected for this type of material. 2.2.2 Suffix-O: This suffix designates a TSR compound with good oil and/or diesel fuel resistance. Unless otherwise specified on the Engineering drawing, parts supplied will meet the
16、oil and fuel resistance requirements specified in Tables 4-9. Typical polymers that may be used for this specification include: Acrylonitrile-butadiene (nitrile or NBR) and appropriate blends. 2.2.3 Suffix-H/O: This suffix designates a heat-resistant TSR material that also exhibits good oil and dies
17、el fuel resistance. Unless otherwise specified on the Engineering drawing, parts supplied will meet both the heat resistance and oil and fuel resistance requirements specified in Tables 4-9. Typical polymers that may be used for this specification include: Chloroprene (CR), Chlorinated Polyethylene(
18、CPE or CM), Chloro-sulfonated Polyethylene (CSM), Epichlorohydrin copolymer (ECO), Acrylonitrile-butadiene (nitrile or NBR), Hydrogenated Nitrile (HNBR), and appropriate blends. 2.2.4 Suffix-H/C: This suffix designates a heat- and weather-resistant TSR material with good resistance to heavy-duty die
19、sel coolants. Unless otherwise specified on the Engineering drawing, parts supplied will meet both the heat resistance and coolant resistance requirements specified in Tables 4-9. A typical polymer that may be used is EPDM. Minimal oil resistance is expected for this material. 2.2.5 Suffix-M: This s
20、uffix designates a common TSR class of materials except used in mount or isolator applications. Dynamic property requirements for these parts are generally specified separately on the Engineering drawing. Typically, the TSR material is a Natural Rubber. Natural Rubber blends with IR and SBR may be c
21、onsidered with prior approval. Chloroprene can be considered in a similar fashion in applications requiring high heat and oil resistance but lower flex fatigue resistance. When highly damped materials are required, butyl compounds may be specified. 2.3 Specific TSR Compound Designations A lower case
22、 letter may be used at the end of the compound designation to specify a specific blend or composition of TSR compound. The lower case letter is added at the end, after the tensile strength number, to indicate a specific compound. For example, as indicated in Table 3, TSR65-10a designates an 8021 mol
23、ding compound supplied by NRI. The specific molding compound designated by the use of the lower case letter will be indicated in Tables 4-9 or will be shown on the engineering drawing. 2.4 Explanation Examples of Designation System The material designation on the drawing shall consist of the TSR mat
24、erial prefix, followed by any suffix requirements H, -O, -C, or M, followed by the durometer and tensile strength specified. In some cases, a specific compound identifier (lower case letter) may be used to differentiate compound variations. A specific polymer base material may also be identified in
25、the specification as well. 2.4.1 Designation on Drawings: Rubber per MPAPS L- 6039, TSR60-10 NUMBER: MPAPS L-6039 TITLE: Rubber (TSR) Molding Compounds REVISION: 1802 This document is restricted and may not be sent outside Navistar, Inc. or reproduced without permission from Corporate Technical Stan
26、dards. Suppliers are required to assume all patent liability. 2018 by Navistar, Inc. FEBRUARY 2018 Page 3 of 22 2.4.1.1 This designation identifies a basic TSR elastomer, without a specific polymer base identified, with a durometer hardness of 60 and a tensile strength of 10 MPa. 2.4.2 Designation o
27、n Drawings: EPDM per MPAPS L-6039 TSR-H70-8a 2.4.2.1 This designation requires an EPDM compound meeting the heat resistance requirement with a durometer of 70 and a tensile of 8 MPa. This is also a specific compound variation as designated by the lower case letter “a.” The specific material descript
28、ion is shown on the Engineering drawing. 2.4.3 Designation on Drawings: Natural Rubber per MPAPS L-6039 TSR-M50-25b 2.4.3.1 This is an engine mount material made from Natural Rubber with a durometer of 50 and a tensile strength of 25 MPa. A specific compound, designated by the lower case letter “b”,
29、 will be shown on the drawing. The print also describes specific dynamic and static spring rates for this part. 2.4.4 Designation on Drawings: TSR-0020 per MPAPS L-6039 2.4.4.1 An alternate designation, intended primarily for parts still under development that may require material property modificat
30、ions prior to final production release but after the print geometry has been determined. 3.0 REFERENCE DOCUMENTS Unless otherwise specified the latest issue of all referenced standards shall apply. The following specifications and standards are referenced in this specification. Quality System Standa
31、rd ISO 9001 or TS-16949 CFR Title 29, Part 1910 ASTM D 1171 NAVISTAR Eng. Design Std. A-16 ASTM D 395 ASTM D 2137 NAVISTAR Supplier Packing and Shipping Std. D-13 ASTM D 412 ASTM D 2240 NAVISTAR ISQ-001-QM NAVISTAR MPAPS P-9543 ASTM D 575 ASTM D 3884 NAVISTAR MPAPS B-50 ASTM D 624 ASTM D 5963/DIN 53
32、516 ASTM D 1630 NAVISTAR MPAPS L-6040 ASTM B 117 NAVISTAR MPAPS B-1 ASTM D 5992 4.0 GENERAL REQUIREMENTS All materials covered by this specification shall meet the requirements specified herein and shall be molded or extruded, using good industry practices. 4.1 Finish Unless otherwise specified on t
33、he engineering drawing, the finish for molded parts shall be uniform as produced from polished steel tools. The mold will be polished to a surface finish of 800 nm or better. Extruded products shall have a smooth, clean surface, free from any foreign matter. Extruded finish will be equivalent to Rub
34、ber Manufacturers Association (RMA) F2 for mold finish. 4.2 Flash Unless otherwise specified on the engineering drawing, the parts shall have a maximum flash allowance of 0.80 mm (RMA T.80mm). Mounts and other parts deemed non-cosmetic and so indicated on the engineering print may have a flash allow
35、ance of 2.35mm (RMA T2.35). 4.3 Dimensional Tolerances Part tolerances are shown in Table 1. Unless otherwise specified on the drawing, these tolerances are applicable and supersede the standard tolerances shown in the title block on the Engineering drawing. NUMBER: MPAPS L-6039 TITLE: Rubber (TSR)
36、Molding Compounds REVISION: 1802 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. 2018 by Navistar, Inc. FEBRUARY 2018 Page 4 of 22 TABLE 1 - STANDARD DIM
37、ENSIONAL TOLERANCE TABLE Dimension - inch Tolerance inch Dimension mm Tolerance -mm 0 - 1.00 .015 0 25 .40 1.0 - 4.00 .025 25 - 100 .50 4.00 - 6.30 .032 100 - 160 .80 6.30 distribution is limited to NAVISTAR employees and approved suppliers. Please contact Materials Engineering for further guidance.
38、 NUMBER: MPAPS L-6039 TITLE: Rubber (TSR) Molding Compounds REVISION: 1802 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. 2018 by Navistar, Inc. FEBRUAR
39、Y 2018 Page 9 of 22 TABLE - 3a TSR GENERAL MATERIAL REQUIREMENTS Designation: TSR45-10a TSR60-10a TSR60-10b TSR65-10a TSR70-8a TSR70-10a TSR80-7b Material ID: TSR-0001 TSR-0002 TSR-0003 TSR-0004 TSR-0005 TSR-0006 TSR-0007 Property Material EPDM NR* EPDM SBR/BR EPDM EPDM EPDM Hardness 45 60 60 65 67
40、70 80 Tensile Strength 10 10 10 10 8 10 6 Elongation 400 350 350 300 200 250 200 Tear Resistance 26 26 25 26 27 - 25 Compression Set 70 (125C) 50 (70C) 40 (70C) 50 (70C) 50 (70C) 70 (100C) 50 (70C) Low Temperature Pass Pass Pass Pass Pass Pass Pass Ozone Resistance 100% 85% 100 85% 100% 100% 100% Ad
41、hesion - 2.8 - (1) 2.8 2.7(5) - - (1) Heat Resistance C A A A A B A Hardness 10 15 10 15 15 10 15 Tensile Strength 20 30 25 30 30 20% 30 Elongation -40 -50 25 -50 -50 -40% 50 Adhesion - -10 -10 -10 - - 40% -10 Salt Spray/Adhesion - -15 -15 -15 - - - (1) Pico Abrasion - (1) - (1) 140 - - (1) - (1) St
42、aining Pass Non-Blooming Pass Recycled Content - 15 to 20% R(2) - - - - Approved Supplier NRI NRI NRI NRI Supergum NRI Griffith Compound I.D. 7440 8011 4097 8021 EX03704(3) 03708 (4) 8043 Approval Report No. Comments Steering Shaft Compound Rubber Grommet Compound Air Duct or Baffle Compound Rear Ho
43、od Mount Material Windshield Seals Same as TMS-6033 Type I SS Wheel Eyebrow NUMBER: MPAPS L-6039 TITLE: Rubber (TSR) Molding Compounds REVISION: 1802 This document is restricted and may not be sent outside Navistar, Inc. or reproduced without permission from Corporate Technical Standards. Suppliers
44、are required to assume all patent liability. 2018 by Navistar, Inc. FEBRUARY 2018 Page 10 of 22 TABLE 3b (continued) - TSR GENERAL MATERIAL REQUIREMENTS Designation: TSR70-14a TSR80-7a TSR95-5a TSR40-10a TSR80-8a TSR60-7a TSR-0065 Material ID: TSR-0008 TSR-0009 TSR-0010 TSR-0024 TSR-0057* TSR-0058 3
45、923193c1 Property Material EPDM EPDM EPDM EPDM EPDM EPDM Urethane Hardness 70 80 95 40 80 60 83 Tensile Strength 14 7 5 10 8 7 48 Elongation 200 100 100 400 200 300 500 Tear Resistance 25 19 22 22 25 22 Compression Set 35 (100C) 50 (70C) 50 (70C) 35 (70C) 50 (70C) 25 (70C) 35 (70C) Low Temperature P
46、ass Pass Pass Pass Pass Pass Pass Ozone Resistance 100% 100% 100% 100% 100% 100% 100% Adhesion - (1) - 2.8 - (1) - Heat Resistance A A B B A B A Hardness 10 15 15 15 15 15 15 Tensile Strength 25 30 30 30 30 30 30 Elongation 25 -50 -50 -50 50 -50 50 Adhesion -10 - -10 -10 - -10 Salt Spray/Adhesion -
47、(1) - -15 - (1) - - (1) Pico Abrasion - (1) - - (1) R(2) - (1) - R(2) Staining Pass Pass - Pass Recycled Content - - 15 to 20% - - Approved Supplier NRI Supergum NRI Griffith All-State Compound I.D. 7520 EX03801 1101 Approval Report No. Comments Hood Latch Compound Windshield Seal Lace Mud Guard and
48、 Radiator Seals Chassis Skirt Support 3618040C1 Chassis skirt Close-out Injection molding compound Chassis skirt pad (1) dash (-) indicates no requirement (2) R = Value is to be reported by the supplier and/or included in the Qualification report. (3) = Seal S BR = Butyl Rubber (2) R = Value is to be reported by the supplier and/or included in the Qualification report. (3) Part
