1、 WORLDWIDE ENGINEERING STANDARDS Material Specification GMW14726 Hoses for Charge - Air Cooler, Turbo Charger Copyright 2013 General Motors Company All Rights Reserved January 2013 Page 1 of 7 1 Scope This standard covers the materials performance of elastomeric turbocharger hoses with three (3) lay
2、ers. Note: Four (4) layer hoses for higher service temperatures are specified in GMW15408, four (4) layer hoses with moderate temperature requirements are subject of GMW16144. 1.1 Material Description. Materials covered by this specification are divided into four (4) types: 1.1.1 Type A. Acrylonitri
3、le butadiene rubber (NBR) respectively Polychloroprene (CR) lining and Polychloroprene cover for +100 C permanent and +125 C peak temperatures. 1.1.2 Type B. Acrylic Ester/Ethylene Copolymer (AEM) in lining and cover for +160 C permanent and +175 C peak temperatures. 1.1.3 Type C. Polyacrylate Rubbe
4、r (ACM) in lining and cover for +175 C permanent and +185 C peak temperatures. 1.1.4 Type D. Drawing defined (e.g., using SAE J200 or ASTM D2000 line callout). 1.1.3 Type E. Chlorinated Polyethylene Rubber (CM) in lining and cover for +125 C permanent and +135 C peak temperatures. All hoses will hav
5、e textile reinforcement suitable to fulfill the requirements of the material and durability tests. 1.2 Symbols. Not applicable. 1.3 Typical Applications. Hoses in turbo charger circuits. 1.4 Remarks. Not applicable. 2 References Note: Only the latest approved standards are applicable unless otherwis
6、e specified. 2.1 External Standards/Specifications. ASTM D2000 ISO 188 ISO 1817 SAE J200 ISO 36 ISO 815 ISO 7619-1 ISO 37 ISO 1431-1 ISO 23529 2.2 GM Standards/Specifications. GME L0004 GMW3059 GMW16144 GME L0005 GMW15408 GMW16153 2.3 Additional References. Drawing/Math Data File TMC003 Material Saf
7、ety Data Sheet guidance documents (available at ). 3 Requirements 3.1 Resources. 3.1.1 Test Samples. Unless otherwise specified, the shape, size and number of test pieces shall be in accordance with the relevant test procedures. Unless otherwise specified, samples are finished parts or to be taken f
8、rom finished parts. If not otherwise stated, mechanical properties in delivery state and after heat or fluid immersion are to be tested at +23 C and with the same test methods. Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or
9、networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW14726 Copyright 2013 General Motors Company All Rights Reserved January 2013 Page 2 of 7 3.1.2 Conditioning. Conditioning shall be as specified in the relevant test procedures. 3.1.3 Equipment. Conforming to the
10、relevant test procedures. 3.1.4 Calibration. The test facilities and equipment shall be in good working order and shall have a valid calibration label. 3.1.5 Alternatives. Alternative test facilities and equipment may also be used. However, all measuring variables as specified in this specification
11、shall be determined correctly with respect to its physical definition. 3.1.6 Facilities. Conforming to the relevant test procedures. 3.1.7 Deviations. Deviations from the requirements of this standard shall have been agreed upon. Such deviations shall be specified on component drawings, test certifi
12、cates, reports, etc. 3.2 Material and Performance Requirements. Material and performance requirements are summarized in Table 1, Table 2, and Table 3. Table 1: Material and Performance Properties, Requirements for the Lining Property Test Method Unit Value Hardness Type A ISO 7619-1 Shore A 75 5 Typ
13、e B ISO 7619-1 Shore A 65 5 Type C ISO 7619-1 Shore A 55 5 Type D As specified on drawing/math data file Shore A As specified on drawing Type E ISO 7619-1 Shore A 75 + 5 -10 Elongation at Break Type A, B, C, E ISO 37, Type 2 or 4 dumb-bell, 200 20 mm/minute % 200 minimum Type D As specified on drawi
14、ng/math data file % As specified on drawing Tensile Strength Type A ISO 37, Type 2 or 4 dumb-bell, 200 20 mm/minute MPa 7 minimum Type B ISO 37, Type 2 or 4 dumb-bell, 200 20 mm/minute MPa 10 minimum Type C ISO 37, Type 2 or 4 dumb-bell, 200 20 mm/minute MPa 9 minimum Type D As specified on drawing/
15、math data file MPa As specified on drawing Type E ISO 37, Type 2 or 4 dumb-bell, 200 20 mm/minute MPa 12 minimum Age Resistance (Heat Aging) Type A ISO 188 Method B, 168 h, -2 h at + 100 C 3 C Change in Hardness Change in Elongation at Break Change in Tensile Strength Shore A % % +15 maximum -40 max
16、imum -20 maximum Type B ISO 188 Method B, 168 h, -2 h at + 175 C 3 C Change in Hardness Change in Elongation at Break Change in Tensile Strength Shore A % % +15 maximum -50 maximum -30 maximum Type C ISO 188 Method B, 504 h, -2 h at + 175 C 3 C Change in Elongation at Break Elongation at Break Chang
17、e in Tensile Strength Tensile Strength % % % MPa -50 maximum 130 minimum -30 maximum 7 minimum Type C ISO 188 Method B, 168 h, -2 h at + 185 C 3 C Change in Elongation at Break Elongation at Break Change in Tensile Strength Tensile Strength % % % MPa -50 maximum 150 minimum -30 maximum 7 minimum Cop
18、yright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW14726 Copyright 2013 General Motors Company All Rights Reserved January 2013 Page 3 of 7 Pro
19、perty Test Method Unit Value Type C ISO 188 Method B, 72 h, -2 h at +200 C 3 C Change in Elongation at Break Elongation at Break Change in Tensile Strength Tensile Strength % % % MPa -50 maximum 150 minimum -30 maximum 7 minimum Type D As specified on drawing/math data file As specified on drawing T
20、ype E ISO 188 Method B, 504 h, -2 h at + 125 C 3 C Change in Elongation at Break Elongation at Break Change in Tensile Strength Tensile Strength % % % MPa -50 maximum 130 minimum -30 maximum 12 minimum Type E ISO 188 Method B, 168 h, -2 h at +135 C 3 C Change in Elongation at Break Elongation at Bre
21、ak Change in Tensile Strength Tensile Strength % % % MPa -50 maximum 150 minimum -30 maximum 12 minimum Oil Resistance Type A ISO 1817 to pre-aged engine oil (GME L0005); 168 h,-2 h; at + 70 C C 3 C Change in Hardness Change in Volume Shore A % +15 maximum 15 maximum Type B ISO 1817 to pre-aged engi
22、ne oil (GME L0005); 168 h, -2 h; at +150 3 C Change in Hardness Change in Volume Change in Elongation at Break Change in Tensile Strength Shore A % % % 10 maximum -5 to +15 maximum -50 maximum -30 maximum Type C ISO 1817 to pre-aged engine oil (GME L0005); 168 h, -2 h; at + 175 C 3 C Change in Hardn
23、ess Change in Volume Change in Elongation at Break Elongation at Break Change in Tensile Strength Tensile Strength Shore A % % % % MPa 10 maximum -5 to +15 maximum -50 maximum 180 minimum -30 maximum 8 minimum Type D As specified on drawing/math data file % As specified on drawing Type E ISO 1817 to
24、 pre-aged engine oil (GME L0005); 168 h, -2 h; at +125 C 3 C Change in Hardness Change in Volume Change in Elongation at Break Elongation at Break Change in Tensile Strength Tensile Strength Shore A % % % % MPa 10 maximum -5 to +15 maximum -50 maximum 180 minimum -30 maximum 12 minimum Copyright Gen
25、eral Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW14726 Copyright 2013 General Motors Company All Rights Reserved January 2013 Page 4 of 7 Table 2: Mate
26、rial and Performance Properties, Requirements for the Cover Property Test Method Unit Value Hardness Type A, B, E ISO 7619-1 Shore A 65 5 Type C ISO 7619-1 Shore A 55 5 Type D As specified on drawing/math data file Shore A As specified on drawing Elongation at Break Type A, B, C ISO 37, Type 2 or 4
27、dumb-bell, 200 mm/minute 20 mm/minute % 200 minimum Type D As specified on drawing/math data file % As specified on drawing Type E ISO 37, Type 2 or 4 dumb-bell, 200 mm/minute 20 mm/minute % 250 minimum Tensile Strength Type A ISO 37, Type 2 or 4 dumb-bell, 200 mm/minute 20 mm/minute MPa 7.5 minimum
28、 Type B ISO 37, Type 2 or 4 dumb-bell, 200 mm/minute 20 mm/minute MPa 10 minimum Type C ISO 37, Type 2 or 4 dumb-bell, 200 mm/minute 20 mm/minute MPa 8.5 minimum Type D As specified on drawing/math data file MPa As specified on drawing Type E ISO 37, Type 2 or 4 dumb-bell, 200 mm/minute 20 mm/minute
29、 MPa 12 minimum Age Resistance (Heat Aging) Type A ISO 188 Method B, 168 h, -2 h at + 100 C 3 C Change in Hardness Change in Elongation at Break Change in Tensile Strength Shore A % % +15 maximum -40 maximum -20 maximum Type B ISO 188 Method B, 168 h, -2 h at +175 C 3 C Change in Hardness Change in
30、Elongation at Break Change in Tensile Strength Shore A % % +15 maximum -50 maximum -30 maximum Type C ISO 188 Method B, 504 h, -2 h at +175 C 3 C Change in Elongation at Break Elongation at Break Change in Tensile Strength Tensile Strength % % % MPa -50 maximum 130 minimum -30 maximum 7 minimum Type
31、 C ISO 188 Method B, 168 h -2 h at + 185 C 3 C Change in Elongation at Break Elongation at Break Change in Tensile Strength Tensile Strength % % % MPa -50 maximum 150 minimum -30 maximum 7 minimum Type C ISO 188 Method B, 72 h, -2 h at +200 C 3 C Change in Elongation at Break Elongation at Break Cha
32、nge in Tensile Strength Tensile Strength % % % MPa -50 maximum 150 minimum -30 maximum 7 minimum Type D As specified on drawing/math data file As specified on drawing Type E ISO 188 Method B, 504 h, -2 h at + 125 C 3 C Change in Elongation at Break Elongation at Break Change in Tensile Strength Tens
33、ile Strength % % % MPa -50 maximum 130 minimum -30 maximum 12 minimum Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW14726 Copyright 201
34、3 General Motors Company All Rights Reserved January 2013 Page 5 of 7 Property Test Method Unit Value Type E ISO 188 Method B, 168 h -2 h at +135 C 3 C Change in Elongation at Break Elongation at Break Change in Tensile Strength Tensile Strength % % % MPa -50 maximum 150 minimum -30 maximum 12 minim
35、um Oil Resistance Type A ISO 1817 to engine oil (GME L0004); 72 h, -2 h; at +70 C 3 C Change in Volume % -10 to +30 maximum Type B ISO 1817 to engine oil (GME L0004); 72 h -2 h; at +150 C 3 C Change in Volume % +20 maximum Type C ISO 1817 to engine oil (GME L0004); 72 h, -2 h; at +175 C 3 C Change i
36、n Volume % +20 maximum Type D As specified on drawing/math data file As specified on drawing Type E ISO 1817 to engine oil (GME L0004); 72 h, -2 h; at + 125 3 C Change in Volume % +20 maximum Ozone Resistance Type A, B, C, E ISO 1431-1, 50 pphm, 20%, 40 C 2 C, 72 h, 2 h visual examination (no magnif
37、ication) No cracks Type D As specified on drawing/math data file As specified on drawing Table 3: Material and Performance Properties, Requirements for the Assembly Property Test Method Unit Value Adhesion Strength Type A ISO 36 N/mm 2.0 minimum Type B ISO 36 N/mm 4.0 minimum Type C, E ISO 36 N/mm 2
38、.5 minimum Type C ISO 36, after aging 72 h, -2 h at + 200 C 3 C N/mm 1.5 minimum Type D As specified on drawing/math data file N/mm As specified on drawing Type E ISO 36, after aging 72 h, -2 h at +125 C 3 C N/mm 2.5 minimum Compression Set Test pieces are to be taken from calibrated ends, if availa
39、ble Type A ISO 815, +100 C 3 C, 24 h, -2 h, 25% compressed % 45 maximum Type B ISO 815, +150 C 3 C, 24 h, -2 h, 25% compressed % 45 maximum Type C ISO 815, +175 C 3 C, 24 h, -2 h, 25% compressed % 70 maximum Type D As specified on drawing/math data file % As specified on drawing Type E ISO 815, +125
40、 C 3 C, 24 h -2 h, 25% compressed % 45 maximum Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW14726 Copyright 2013 General Motors Compan
41、y All Rights Reserved January 2013 Page 6 of 7 Property Test Method Unit Value Cold Resistance Type A, B, C, E ISO 23529, -30 C 3 C; 22 h + 1 h Test piece 10 100 mm Bending test r=12.5 mm No cracks Type D As specified on drawing/math data file MPa As specified on drawing Durability Tests to GMW16153
42、 and additional requirements on drawing 4 Manufacturing Process The inner surface of the hose shall be free of excess soap, talc or other material which could affect serviceability and usage. 5 Rules and Regulations 5.1 Legal Regulations. All materials must satisfy applicable laws, rules, regulation
43、s and recommendations valid in the country of usage. 5.2 Language. In the event of conflict between the English and domestic language, the English language shall take precedence. 5.3 Inspection and Rejection. Samples of components or materials released to a GM material specification shall be tested
44、for conformity with the requirements of this material specification and approved by the responsible Engineering department prior to commencement of delivery of bulk supplies. A new approval must be received for any changes, e.g., properties, manufacturing process, location of manufacture, etc. If no
45、t otherwise agreed, all testing and documentation normally required for initial release must be completed. It is the responsibility of the supplier to inform the customer in a timely manner, without solicitation, and to include documentation of all modifications of materials and/or processes and to
46、apply for a new release. If not otherwise agreed, all release tests shall be repeated and documented by the supplier prior to commencement of delivery of non-conforming bulk supplies. In individual cases, a shorter test can be agreed to between the responsible Engineering department and the supplier
47、. 5.4 Material Safety Data Sheets/Safety Data Sheets (MSDS/SDS). For new product submissions, or when a change in chemical composition of an existing product has occurred, a complete copy of the Material Safety Data Sheet/Safety Data Sheet must be submitted in compliance with the Globally Harmonized
48、 System of Classification and Labeling of Chemicals (GHS) requirements or other country-specific MSDS/SDS requirements. In addition, product MSDS/SDS submissions must be in compliance with specific country General Motors TMC003 Material Safety Data Sheet/Safety Data Sheet guidance documents where available. 5.5 All materials supplied to this standard must comply with the requirements of GMW3059, Restricted and Reportable Substances for Parts. 6 Approved Sources Materials supplied to this specification must be approved by General Motors. A
