1、 WORLDWIDE ENGINEERING STANDARDS Material Specification GMW16080 PVC, Interior, Integral Colored, Extrusion/Injection Molding Compounds Copyright 2012 General Motors Company All Rights Reserved March 2012 Originating Department: North American Engineering Standards Page 1 of 7 1 Scope 1.1 Material D
2、escription. This specification covers the properties of an integrally colored, interior Polyvinyl Chloride (PVC) molding compound. These materials can be processed by extrusion and/or injection molding. Materials are delineated by “Type” in Appendix A, Table A1, indicating Shore hardness and “Grade”
3、 in Table A2, indicating molding process. 1.2 Symbols. The material abbreviation according to ISO 11469 is PVC . 1.3 Typical Applications. Typical interior trim applications include, but are not restricted to interior trim moldings not intended for use in high heat or high solar load applications su
4、ch as instrument panel horizontal or rear seat to rear window surfaces. 1.4 Identification. PVC materials approved to this specification will be called out on the engineering drawing indicating both attributes above, e.g., GMW16080, Type 4, Grade E is an 80 5 Shore A hardness, extrudable PVC. In add
5、ition, if the nominal Shore hardness for a component is different than nominal type stated herein, it shall be called out specifically on the engineering drawing, e.g., Type 4 = 80 5 Shore A, but 82 Shore A is being used, 82 X Shore A hardness shall be called out. 2 References Note: Only the latest
6、approved standards are applicable unless otherwise specified. 2.1 External Standards/Specifications. AATCC23 ISO 188 ISO 1183 ISO 11469 ISO 105-G02 ISO 527 ISO 3451-1 SAE J323 ISO 176 ISO 868 ISO 3795 SAE J2412 2.2 GM Standards/Specifications. GMW3013 GMW3205 GMW3402 GMW14334 GMW3059 GMW3232 GMW3417
7、 GMW14651 GMW3221 GMW3235 GMW14162 2.3 Additional References. TMC003 Material Safety Data Sheet guidance documents (available at ). 3 Requirements Materials approved to this specification shall meet the requirements of GMW3013, General Requirements for Handling of Technical Terms of Delivery for Pla
8、stics. 3.1 Requirements on Delivery. Important physical, mechanical, and thermal properties that characterize the material are summarized in Table 1. Note: For each product, the requirements to Table 1 shall be documented by Certification Statement according to GMW3013. The color and gloss shall be
9、specified on drawings, in material specifications and otherwise. 3.2 Requirements on Test Specimens. Tests shall be conducted using the latest issue of the test methods indicated. Suitable precautions should be taken to ensure that applicable safe limits are not exceeded when conducting test procedu
10、res, processes, and/or handling the materials required by this specification. 3.2.1 Test specimens shall be die cut from fan gated injection or compression molded plaques having a nominal thickness of 3.2 mm 0.2 mm. If injection molded, die cut specimens are to be tested with the long Copyright Gene
11、ral 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 GMW16080 Copyright 2012 General Motors Company All Rights Reserved March 2012 Page 2 of 7 axis of the test
12、 specimen perpendicular to the direction of flow. Plaque dimensions must be sufficient to permit this. 3.2.2 Test samples shall be aged a minimum of 40 h after molding and 24 h immediately following a conditioning period per GMW3221, Code A, unless otherwise specified. All tests shall be performed o
13、n unannealed specimens. In addition, tests specified at temperatures below or above 22 C 3 C shall be conducted at the specified temperature using specimens conditioned at the specified temperature for 4 h minimum. 3.2.3 The minimum values specified in the property tables must be met by test specime
14、ns in natural, black, or in a standard sampled color if natural or black are not available. For colored grades where other pigment and additive systems (e.g., stabilizer) are used, the impact values shall not decrease more than 10% from the specified minimum value. 3.3 Compound Properties. See Table
15、 1 and 2. A minimum of six lots shall be tested to Table 1, unless otherwise noted. The following are also required for full specification approval (the minimum number of lots per test required is one): Youngs Modulus Poissons Ratio Coefficient of Linear Thermal Expansion (CLTE) Stress-Strain at 23
16、C, 85 C, and -30 C Suppliers must demonstrate ability to meet integrally colored compound requirements (Table 2) with an appropriate palette of GM visually approved colors (i.e., red, tan, blue, gray) prior to approval of either base compound or colored compounds. 3.3.1 Accelerated Weathering Resist
17、ance. Expose to 1240 kJ/m2 per SAE J2412 or 19 MJ/m2 per GMW14162 Cycle C and 115 C. Testing is completed using a control retain. Test samples or parts may be used for exposure at the discretion and approval of GM Engineering. 3.3.1.1. Evaluation. Unless otherwise specified, inspect a minimum of mid
18、 and full exposed test samples for gloss and color change. Measure test samples before and after exposure per GMW3417. Table 1: Compound Properties (Black, Natural, or Integrally Colored) Property Test Method Units Type 1 Type 2 Type 3 Type 4 Shore Hardness ISO 868, 15-second delay A or D 50 5 A 60
19、5 A 70 5 A 80 5 A Density ISO 1183 g/cm3 1.15 to 1.35 1.15 to 1.35 1.15 to 1.35 1.15 to 1.35 Tensile Stress at Break ISO 527, Type 1A dumbbell, 500 mm/minute MPa 7 9 10 10 Elongation at Break ISO 527, Type 1A dumbbell, 500 mm/minute % 300 300 300 200 Filler Content ISO 3451-1, Method A % 0 to 20 0 t
20、o 30 0 to 20 0 to 20 Volatile Loss ISO 176 % 3.0 3.0 3.0 3.0 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 GMW16080 Copyright 2012 General
21、 Motors Company All Rights Reserved March 2012 Page 3 of 7 Property Test Method Units Type 1 Type 2 Type 3 Type 4 Cold Flexibility Mandrel Test SAE J323, Method A. Use Table 2 for mandrel size selection based upon hardness. 3.2 mm 0.2 mm sample thickness. N/A Note 1 No Cracks Properties After Heat A
22、ge Exposure ISO 188 Method B. 168 h at 95 C followed by indicated property testing. % 25% maximum of Hardness, Tensile Stress at Break, Elongation at Break. No tackiness. Note: Perform indicated property testing at 22 C 3 C. Use original mechanical property test methods. Flammability GMW3232 OR ISO
23、3795 (Report values according to GMW3232) mm/minute 100 Fogging GMW3235-B-T2 condensable constituents mg 2 Chemical Resistance GMW14334-A No units Rating 1 Odor GMW3205 Dry Condition Rating 6 Note 1: N/A = Not applicable. Table 2: Compound Properties (Integrally Colored) Property Test Method Units T
24、ype 1 Type 2 Type 3 Type 4 Flammability GMW3232 OR ISO 3795 (Report values according to GMW3232) mm/minute 100 Soil and Cleaner Resistance GMW3402 Procedure A. Test all soiling agents except for codes E, K, and L. Apply soiling agent. Allow soiling agent to set for 30 minutes at standard conditions;
25、 then clean soiling agent using cleaner 0 within 20 minutes. If soil does not remove, immediately use cleaner 2. mm/minute Rating 8, no ring formation or haptic change allowed Fogging GMW3235-B-T2 condensable constituents mg 2 Copyright General Motors Company Provided by IHS under license with Gener
26、al Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW16080 Copyright 2012 General Motors Company All Rights Reserved March 2012 Page 4 of 7 Property Test Method Units Type 1 Type 2 Type 3 Type 4 Colorfastness to Bur
27、nt Gas (Propane) AATCC23 or ISO 105-G02, 168 h at 60 C, specimen color: light gray or light beige E YI E 1.5 YI 2.0 Accelerated Weathering Resistance for Interior Trim/Materials Expose to 1240 kJ/m2 per SAE J2412 or 19 MJ/m2 per GMW14162 Cycle C and115 C E E 3.0 80% gloss retention required. No obje
28、ctionable defects allowed. Natural Weathering Exposure Test for Interior Trims/Materials 105K TNR Langleys per GMW3417 L1-F2-G1-T4 E E 3.0 80% gloss retention required. No objectionable defects allowed. Table 3: Mandrel Size Selection Chart Hardness (Mandrel Size) Hardness (Mandrel Size) 50 to 70 Sh
29、ore A (6 mm) 37 to 45 Shore D (25 mm) 75 to 95 Shore A (12 mm) 50 to 80 Shore D (50 mm) 3.4 Performance Requirements. 3.4.1 Part Performance GMW14651. Parts made from interior materials approved to this specification must meet the performance requirements of GMW14651. 4 Manufacturing Process See Tab
30、le A2. 5 Rules and Regulations 5.1 Legal Regulations. All materials must satisfy applicable laws, rules, regulations 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 In
31、spection and Rejection. Samples of components or materials released to a GM material specification shall be tested 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 appr
32、oval must be received for any changes, e.g., properties, manufacturing process, location of manufacture, etc. If not 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 ma
33、nner, without solicitation, and to include documentation of all modifications of materials and/or processes and to 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. I
34、n individual cases, a shorter test can be agreed to between the responsible Engineering department and the supplier. 5.4 Initial Source Approval. No shipments shall be made by any supplier until representative initial production samples have been approved by the appropriate Materials Engineering dep
35、artment(s) as meeting the requirements of this specification. 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 GMW16080 Copyright 2012 Genera
36、l Motors Company All Rights Reserved March 2012 Page 5 of 7 5.5 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 mu
37、st be submitted in compliance with the Globally Harmonized 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 Safet
38、y Data Sheet/Safety Data Sheet guidance documents where available. 5.6 All materials supplied to this standard must comply with the requirements of GMW3059, Restricted and Reportable Substances for Parts. 6 Approved Sources Engineering qualifications of an approved source are required for this stand
39、ard. Only sources listed in the GM Materials File, i.e., MATSPC, under this standard number have been qualified by Engineering as meeting the requirements of this standard. For other GM locations, the responsible Engineering group should be contacted to obtain the approved source in that individual
40、country. 7 Notes 7.1 Glossary. MATSPC: Global repository of GM approved materials for corresponding GM Engineering Standards. 7.2 Acronyms, Abbreviations, and Symbols. CLTE Coefficient of Linear Thermal Expansion DSC Differential Scanning Calorimetry GHS Globally Harmonized System IR Infrared MSDS M
41、aterial Safety Data Sheet PVC Polyvinyl Chloride SDS Safety Data Sheet TGA Thermogravimetric Analysis Curve TSP Test Sampling Plan 8 Coding System This standard shall be referenced in other documents, drawings, etc., as follows: Material per GMW16080P-PVC, Type X, Grade X Where: GMW = GM Worldwide S
42、pecification 16080 = Sequential Number P = Plastic PVC = Polyvinyl Chloride Type X = 1 to 4 as defined in Table A1 Grade X = E or I as defined in Table A2 Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted w
43、ithout license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW16080 Copyright 2012 General Motors Company All Rights Reserved March 2012 Page 6 of 7 9 Release and Revisions This standard was originated in September 2008. It was first approved by the Global Plastics Team in November 2008. It was
44、first published in December 2008. Issue Publication Date Description (Organization) 1 DEC 2008 Initial publication. 2 FEB 2012 Added Table 2 for colored resins, spec reorganization, added odor test. (Plastics GSSLT) 3 MAR 2012 Correction to Natural Weathering Exposure Test Method Value. (Plastics GS
45、SLT) Cross-Reference of Replaced Specifications GMW16080 Specification Replaced Type 3, Grade I GMP.PVC.023 Type 2, Grade E or I GMP.PVC.035 Type 4, Grade I GMP.PVC.037 Type 3, Grade I GMP.PVC.089 Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for Resal
46、eNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW16080 Copyright 2012 General Motors Company All Rights Reserved March 2012 Page 7 of 7 Appendix A Table A1: Shore Hardness Type Shore Hardness (Shore A) 1 50 5 2 60 5 3 70 5 4 80 5 Table A2: Molding Process Grade Process E Extrusion I Injection Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
