1、WORLDWIDEENGINEERINGSTANDARDSMaterial Specification GMW15988Blend from Polypropylene and EPR, UV Stable Copyright 2013 General Motors Company All Rights ReservedJune 2013 Page 1 of 61 Scope1.1 Material Description. This specification covers the properties of UV stabilized blends of polypropyleneand
2、EPR and blends of polypropylene and EPR filled with glass fibers. It covers injection molding types formanufacturing of technical parts requiring a specific surface feel, e.g. soft touch applications.Note: Additional characteristics will be indicated by code letters according to the respective speci
3、ficationnumber. Code letters that may apply to this specification are defined in GMW3013.1.1.1 Additional Characteristics. Materials certified to this material specification may have additionalcharacteristics, e.g. paintable, etc. Possible additional characteristics are defined in GMW3013.1.2 Symbol
4、s. The material abbreviation according to ISO 11469 are shown in Table 1.1.3 Typical Applications. Typical applications include the following: interior trim.The differences between the Types are based on the different Tensile Modulus (stiffness) ranges as defined inTable 1.2 ReferencesNote: Only the
5、 latest approved standards are applicable unless otherwise specified.2.1 External Standards/Specifications.ASTM D3012 ISO 179 ISO 1133 ISO 6603-2ASTM E831 ISO 188 ISO 1183-1 ISO 11469ISO 75-1 ISO 294-3 ISO 1873-2 ISO 11359-2ISO 75-2 ISO 294-4 ISO 3167ISO 75-3 ISO 527-1 ISO 3451-1ISO 105-G02 ISO 527-
6、2 ISO 45772.2 GM Standards/Specifications.GMW3001 GMW3205 GMW3235 GMW14688GMW3013 GMW3221 GMW14162 GMW16853GMW3059 GMW3232 GMW144442.3 Additional References.TMC003 Material Safety Data Sheet guidance documents (available at ).3 RequirementsMaterials approved to this specification shall meet the requ
7、irements of GMW3013, General Requirements forHandling of Technical Terms of Delivery for Plastics.3.1 Requirements on Delivery. Important physical, mechanical and thermal properties that characterize thematerial are summarized in Table 1 and Table 2.Note: For each product the requirements to Table 1
8、 and Table 2 shall be documented by CertificationStatement according to GMW3013. The color shall be specified on drawings, in material specifications andotherwise.Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking per
9、mitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW15988 Copyright 2013 General Motors Company All Rights ReservedJune 2013 Page 2 of 63.1.1 Requirements on Test Specimens. Unless otherwise specified, injection molding of test specimensshall be accomplished per ISO 294 with th
10、e conditions for injection molding from ISO 1873-2. Test methodsand specimen dimensions shall also be in accordance with ISO 1873-2 with the following additions:Use ISO 3167, Type A, thickness 4 mm, for tensile and flexural properties.All tests shall be performed on specimens 40 h minimum after mold
11、ing and immediately following aconditioning period of 24 h minimum in a controlled atmosphere per GMW3221, Code A, unless otherwisespecified. All tests shall be performed on unannealed specimens.The values specified in Table 1 shall be met by test specimens in natural, black or in a standard sampled
12、 colorif natural or black are not available. The values specified in Table 2 shall be met by a typical exterior color forapproval to the specification and/or by test specimens in specific colors as required during color development.For integrally colored grades where other additive systems (e.g. sta
13、bilizer) are used, the impact values shallnot decrease more than 10 % from the specified minimum value.3.1.2 Chemical Requirements. All parts manufactured from molding compounds shall be resistant to themedia they contact at their place of use.3.2 Compound Properties. See Table 1 and Table 2. The fo
14、llowing are also required for full specificationapproval. The minimum number of lots per test required is one in natural: Tensile Modulus, Poissons Ratio,Stress Strain Curve at +23 C, +85 C, -30 C; Multiaxial Impact Curve, Test Report according to GMW16853.See the TPO certification template for the
15、test procedures.3.3 Performance Requirements. Performance requirements e.g., flammability, fogging or resistance to odor,shall be specified on part drawings or in component specifications.All finished parts for Interior applications shall meet the requirements according to GMW14444.Table 1: Compound
16、 Properties (Black or Natural)Properties Standard Unit Type A Type B Type C Type D Type EMaterialAbbreviation ISO 11469 PP+EPRPP+EPR-GF6PP+EPR-GF22PP+EPR-GF25PP+EPR-GF27Tensile Modulus ISO 527-1ISO 527-2 MPa 30 to 120 400 to 800 1200 to 1900 2100 to 2900 3800 to 5200Tensile Stress atYieldISO 527-1IS
17、O 527-2 MPa 3 10 22 24 40Tensile Stress atYield after heataging (Note 1)ISO 527-1ISO 527-2 MPa(Note 2)Ash ISO 3451-1(at +600 C) % by mass 2 4 to 8 18 to 25 22 to 28 24 to 30Density ISO 1183-1,Method A g/cm3 Target range:0.90 to 0.94 0.97 to 1.03 1.02 to 1.08 1.05 to 1.11 1.05 to 1.13Melt Flow Volume
18、Rate MVR 230/2.16 ISO 1133 cm3 /10 min 4 to 9 5 to 10 5 to 10 5 to 10 14 to 21Multiaxial ImpactStrength at +23 C ISO 6603-2 J Report value (Energy at Maximum Force)Multiaxial ImpactStrength at -30 C ISO 6603-2 J Report value (Energy at Maximum Force)Notched CharpyImpact Strength at+23 CISO 179/1eA k
19、J/m2 45 35 30 20 7Notched CharpyImpact Strength,+23 C after heataging (Note 1)ISO 179/1eA kJ/m (Note 2)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
20、 STANDARDS GMW15988 Copyright 2013 General Motors Company All Rights ReservedJune 2013 Page 3 of 6Properties Standard Unit Type A Type B Type C Type D Type ENotched CharpyImpact Strength at-30 CISO 179/1eA kJ/m2 10 10 6 6 4CLTE(Coefficient ofLinear ThermalExpansion) ASTM E831orISO 11359-2Parallel to
21、 Flow 10-6mm/mm/C Report valuePerpendicular toFlow10-6mm/mm/C Report valueMold Shrinkage (forreference only)after 48 h at +23 CISO 294-3/4Parallel to Flow % 0.8 to 1.3 0.25 to 0.5 0.1 to 0.25 0.1 to 0.25 0.1 to 0.25Perpendicular toFlow % 0.7 to 1.4 0.6 to 0.9 0.5 to 0.8 0.6 to 1.0 0.7 to 1.2HDT B, 0
22、.45 MPa,flatwiseISO 75-1ISO 75-2ISO 75-3C 35 60 95 115 135Resistance toScratching Grain:N134, color blackGMW14688-A-10 N L 0.5 0.5 0.7 0.7 0.7Resistance toScratching afterHeat Aging; Grain:N134, color black(Note 3)GMW14688-A-10 N L 0.5 0.5 0.7 0.7 0.7Thermal OxidativeStabilityASTM D3012orISO 4577168
23、 hat +150 CN/A No visible indication of local discoloration and/or brittleness by materialdegradation.Emission Testing ofInterior Materials(Odor, Fogging,Emissions):GMW16853- Odor GMW3205-B3 Rating 6- Fogging GMW3235-B-Y1-T2 mg Requirements see GMW16853- Emissions GMW15634VOC valueSVOC valueg/gg/gRe
24、quirements see GMW16853Requirements see GMW16853Note 1: Heat aging for (1000 5) h at (+102 3) C according to ISO 188 Method A (air oven method). Impact specimens for Charpytesting shall be notched prior to aging.Note 2: Aged specimens shall have retention 100 % relative to unaged specimens tested co
25、ncurrently.Note 3: Heat aging for (168 3) h at (+102 3) C according to ISO 188 Method A (air oven method) Test after 24 h recovery.Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-
26、,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW15988 Copyright 2013 General Motors Company All Rights ReservedJune 2013 Page 4 of 63.3 Compound Properties. See Table 2.Table 2: Compound Properties (Integrally Colored)Properties Standard Unit Type A Type B Type C Type D Type ENotched CharpyImpact Strength
27、,-30CISO 179/1eA kJ/m2 10 10 6 6 4Multiaxial ImpactStrength at -30C ISO 6603-2 J Report value (Energy at Maximum Force)Colorfastness toLight, NaturalWeatheringColor ChangeSurface DefectsWeatherResistance perGMW3417-L1-F2-G1-T4.Test at thefollowingintervals:1250 MJ/m(| 30 000 Ly),2300 MJ/m(| 55 000 L
28、y),3350 MJ/m(| 80 000 Ly),4400 MJ/m(| 105 000 Ly).Test specimenrequired to bereturned tocustomer ateach interval.- DE 3.0No objectionable defects allowedColorfastness toLight, AcceleratedXenon Arc perGMW14162Cycle D300 kJ/m2 and1240.8 kJ/m2Note:Separate testpanels arerequired foreach exposure-Color
29、Change DE 3.0Surface Defects No objectionable defects allowedAlternatively:Colorfastness toArtificial LightGMW14162 /C / 26 MJ/m2N/A Rating 4 minimum(Also, there shall be no more than a noticeable change in hue orchroma, and no objectionable tackiness, blotchiness, loss of grain,wrinkling, or other
30、undesirable effects.)Laser scorableJenoptikEvaluation forResidualWallthicknessLaserScorableScoreline notvisibleOKCopyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE E
31、NGINEERING STANDARDS GMW15988 Copyright 2013 General Motors Company All Rights ReservedJune 2013 Page 5 of 6Properties Standard Unit Type A Type B Type C Type D Type EEmission Testing ofInterior Materials(Odor, Fogging,Emissions):GMW16853- Odor GMW3205-B3 Rating 6- Fogging GMW3235-B-Y1-T2 mg Require
32、ments see GMW16853- EmissionsGMW15634VOC valueSVOC valueg/gg/gRequirements see GMW16853Requirements see GMW16853Flammability(plaques 1 mm) GMW3232 mm/min SE or 100Colorfastness toBurnt GasAATCC 23 orISO 105-G02 -light neutral orlight grayN/A DE 1.5DYI 2.0Resistance toScratching Grain:Ancona N132GMW1
33、4688-A-10 N L 0.5 0.5 0.7 0.7 0.7Resistance toScratching afterHeat Aging; GrainAncona N132GMW14688-A-10 N L 0.5 0.5 0.7 0.7 0.74 Manufacturing ProcessNot applicable.5 Rules and Regulations5.1 Legal Regulations. All materials must satisfy applicable laws, rules, regulations and recommendationsvalid i
34、n the country of usage.5.2 Language. In the event of conflict between the English and domestic language, the English language shalltake precedence.5.3 Inspection and Rejection. Samples of components or materials released to a GM material specificationshall be tested for conformity with the requireme
35、nts of this material specification and approved by theresponsible 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 ofmanufacture, etc. If not otherwise agreed, all testing and
36、documentation normally required for initial releasemust be completed.It is the responsibility of the supplier to inform the customer in a timely manner, without solicitation, and toinclude documentation of all modifications of materials and/or processes and to apply for a new release.If not otherwis
37、e agreed, all release tests shall be repeated and documented by the supplier prior tocommencement of delivery of non-conforming bulk supplies. In individual cases, a shorter test can be agreedto between the responsible Engineering department and the supplier.5.4 Material Safety Data Sheets/Safety Da
38、ta Sheets (MSDS/SDS). For new product submissions, or when achange in chemical composition of an existing product has occurred, a complete copy of the Material SafetyData Sheet/Safety Data Sheet must be submitted in compliance with the Globally Harmonized System ofClassification and Labeling of Chem
39、icals (GHS) requirements or other country-specific MSDS/SDSrequirements. In addition, product MSDS/SDS submissions must be in compliance with specific countryGeneral Motors TMC003 Material Safety Data Sheet/Safety Data Sheet guidance documents where available.Copyright General Motors Company Provide
40、d by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW15988 Copyright 2013 General Motors Company All Rights ReservedJune 2013 Page 6 of 65.5 All materials supplied to this standard m
41、ust comply with the requirements of GMW3059, Restricted andReportable Substances for Parts.6 Approved SourcesMaterials supplied to this specification must be approved by General Motors.A list of approved materials can be found in (e.g. MATSPC). This GM Material File is provided to third partiesto re
42、duce redundant testing of materials. If approved material already listed is used, the part supplier can useGM Material File reference for Production Part Approval Process (PPAP) material approval. If the decision ismade to use a not yet approved material, contact responsible engineering group for de
43、tails on the approvalprocess. The material approval process must be completed prior to PPAP start date of the part supplied toGeneral Motors.7 Notes7.1 Glossary.MATSPC: Global repository of GM approved materials for corresponding GM Engineering Standards.7.2 Acronyms, Abbreviations, and Symbols.EPR
44、Ethylene-propylene rubberGF Glass fiberGHS Globally Harmonized System of Classification and Labeling of ChemicalsMSDS Material Safety Data SheetPP PolypropylenePPAP Production Part Approval ProcessSDS Safety Data Sheet8 Coding SystemThis standard shall be referenced in other documents, drawings, etc
45、., as follows:Material per GMW15988P-PP+EPR-GF10-Type BWhere:GMW = GM Worldwide15988 = Sequential numberP = PlasticsPP = PolypropyleneEPR = Ethylene-Propylene RubberGF = Glass fiber30 = Glass fiber contentType B = Type defined in Table 19 Release and RevisionsThis standard was originated in July 200
46、8. It was first approved by Global Plastics SSLT in October 2008. Itwas first published in October 2008.Issue Publication Date Description (Organization)1 OCT 2008 Initial publication.2 JUN 2013 5 year refresh; converted into new template (Plastics GSSLT)Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
