1、 WORLDWIDE ENGINEERING STANDARDS Material Specification GMW15549 Polyolefin Alloy - Talc Filled, High Stiffness Medium Impact, Interior Thermoplastic Olefin Copyright 2012 General Motors Company All Rights Reserved March 2012 Originating Department: North American Engineering Standards Page 1 of 9 1
2、 Scope 1.1 Material Description. This specification describes material grades of a polyolefin alloy, pellet form, injection molding compounds. Note: For the purpose of this specification, polyolefin alloy is defined as an alloy of polypropylene plastic and Ethylene Propylene (EP) or Ethylene Propyle
3、ne Diene Monomer (EPDM) rubber. 1.1.1 Additional Characteristics. Materials certified to this material specification may have additional characteristics as defined in GMW3013, e.g., paintable, ultraviolet (UV) stability, etc. 1.1.2 Types. The classification into groups is according to the different
4、properties as described in Table 1. 1.2 Symbols. The material abbreviation according to ISO 11469 is PP + EP(D)M - M20. 1.3 Typical Applications. Typical applications include the following: Interior Trim. 1.4 Remarks. Not applicable. 2 References Note: Only the latest approved standards are applicab
5、le unless otherwise specified. 2.1 External Standards/Specifications. ASTM D3763 ISO 178 ISO 527-1 ISO 3167 ASTM E831 ISO 179/1eA ISO 527-2 ISO 3451/1 ISO 75-1 ISO 180/1eA ISO 1133 ISO 6603-1/2 ISO 75-2 ISO 188 ISO 1183/A ISO 11359-2 ISO 75-3 ISO 294 ISO 1873-2 ISO 11469 ISO 105-G02 2.2 GM Standards
6、/Specifications. GMW3013 GMW3232 GMW14162 GMW14688 GMW3059 GMW3235 GMW14334 GMW15520 GMW3205 GMW3417 GMW14444 GMW16172 GMW3221 2.3 Additional References. TMC003 Material Safety Data Sheet guidance documents (available at ). 3 Requirements 3.1 Material Requirements. Materials approved to this specifi
7、cation shall meet the requirements of GMW3013, General Requirements for Handling of Technical Terms of Delivery for Plastics. 3.2 Requirements on Delivery. Important physical, mechanical and thermal properties that characterize the material are summarized in Table 1 and Table 2. Note: For each produ
8、ct, the requirements to Table 1 and Table 2 shall be documented by Certification Statement according to GMW3013. The color shall be specified on drawings, in material specifications and otherwise. Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for Resal
9、eNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW15549 Copyright 2012 General Motors Company All Rights Reserved March 2012 Page 2 of 9 3.3 Requirements on Test Specimens. Unless otherwise specified, injection molding of test specimens shall
10、 be accomplished per ISO 294 with the conditions for injection molding from ISO 1873-2. Test methods and specimen dimensions are also to be in accordance with ISO 1873-2 with the following additions: use ISO 3167, Type 1A, thickness 4 mm for tensile and flexural properties. All tests shall be perfor
11、med on specimens 40 hours minimum after molding and immediately following a conditioning period of 24 hours minimum in a controlled atmosphere per GMW3221, Code A unless otherwise specified. All tests shall be performed on unannealed specimens. The values specified in Table 1 shall be met by test sp
12、ecimens in natural or black; the values specified in Table 2 shall be met by integrally colored test specimens. For integrally colored grades where other additive systems (e.g., stabilizer) are used, the impact values shall not decrease more than 10% from specified minimum value. 3.3.1 Chemical Requ
13、irements. All parts manufactured from molding compounds shall be resistant to the media they contact at their place of use. 3.4 Compound Properties. See Table 1 and Table 2. The following are also required for full specification approval. The minimum number of lots per test required is one in natura
14、l: Poissons Ratio, stress-strain curves at multiple temperatures: +23 C, +85 C, -30 C; and multiaxial impact curves at low temperature. See GMW3013 template for the test procedures. 3.5 Performance Requirements. All finished parts for Interior applications shall meet the requirements according to GM
15、W14444. Table 1: Compound Properties (Black or Natural) Property Standard Units T1 Class U UV Stable, Scratch Resistant (Default if no type is specified) T1 Class P Paintable Version of T1 (No UV or Scratch Additives) T2 Class U Higher Flow, Lower Density, UV Stable, Scratch Resistant T2 Class P Pai
16、ntable Version of T2 (No UV or Scratch Additives) Filler Content ISO 3451/1 Method A % Mean = 17 Range = 13 to 22 Mean = 17 Range = 13 to 22 Mean = 14 Range = 13 to 15 Mean = 14 Range = 13 to 15 Density ISO 1183/A g/cm3 Mean = 1.03 Range = 0.99 to 1.06 Mean = 1.03 Range = 0.99 to 1.06 Mean = 1.00 Ra
17、nge = 0.99 to 1.01 Mean = 1.00 Range = 0.99 to 1.01 Melt Flow Rate (MFR) 230/2.16 ISO 1133 g/10 minutes Mean = 17 Range = 11 to 23 Mean = 17 Range = 11 to 23 Mean = 33 Range = 30 to 36 Mean = 33 Range = 30 to 36 Melt Volume Flow Rate (MVR) 230/2.16 ISO 1133 cm/10 minutes Mean = 20.4 Range = 13 to 27
18、.5 Mean = 20.4 Range = 13 to 27.5 Report Results Report Results Flexural Modulus ISO 178, 2 mm/minute test speed MPa Mean = 1700 Range = 1500 to 1900 Mean = 1700 Range = 1500 to 1900 Mean = 1750 Range = 1600 to 1900 Mean = 1750 Range = 1600 to 1900 Tensile Modulus at 23 C ISO 527-1 ISO 527-2 Specime
19、n 1A, 1 mm/minute test speed MPa Mean = 1800 Range = 1600 to 2000 Mean = 1800 Range = 1600 to 2000 Mean = 1800 Range = 1600 to 2000 Mean = 1800 Range = 1600 to 2000 Tensile Stress at Yield ISO 527-1 ISO 527-2 Specimen 1A, 50 mm/minute test speed MPa 17 17 17 17 Copyright General Motors Company Provi
20、ded by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW15549 Copyright 2012 General Motors Company All Rights Reserved March 2012 Page 3 of 9 Property Standard Units T1 Class U UV St
21、able, Scratch Resistant (Default if no type is specified) T1 Class P Paintable Version of T1 (No UV or Scratch Additives) T2 Class U Higher Flow, Lower Density, UV Stable, Scratch Resistant T2 Class P Paintable Version of T2 (No UV or Scratch Additives) Tensile Stress at Yield after Heat Aging (1000
22、 hours 5 hours at 105 C 3 C) Note 1 ISO 527-1 ISO 527-2 50 mm/minute test speed % Retention 100% 100% 100% 100% Multiaxial Impact Strength at 23 C ASTM D3763, Specimen C 6.6 m/second speed J at maximum load 19 All failures must be ductile 19 All failures must be ductile 19 All failures must be ducti
23、le 19 All failures must be ductile Multiaxial Impact Strength at 23 C ISO 6603-1/2 Specimen 60 mm diameter 2 mm or 60 2 2 mm plaque 4.4 m/second speed J at maximum load Report Results Report Results Report Results Report Results Notched Izod Impact at 23 C ISO 180/1eA kJ/m2 25 25 25 25 Notched Izod
24、Impact at Cold Temperature ISO 180/1eA kJ/m2 4 at -30 C 4 at -30 C 4 at -30 C 4 at -30 C Notched Charpy Impact at 23 C ISO 179/1eA kJ/m2 25 25 25 25 Notched Charpy Impact at Cold Temperature ISO 179/1eA kJ/m2 4 at -30 C 4 at -30 C 4 at -30 C 4 at -30 C Heat Deflection Temperature Method B 0.45 MPa I
25、SO 75-1 ISO 75-2 ISO 75-3 flatwise C 85 85 Mean = 100 Range = 90 to 105 Mean = 100 Range = 90 to 105 Heat Deflection Temperature, Method A 1.8 MPa ISO 75-1 ISO 75-2 ISO 75-3 flatwise C 50 50 Report Results Report Results Copyright General Motors Company Provided by IHS under license with General Mot
26、ors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW15549 Copyright 2012 General Motors Company All Rights Reserved March 2012 Page 4 of 9 Property Standard Units T1 Class U UV Stable, Scratch Resistant (Default if no ty
27、pe is specified) T1 Class P Paintable Version of T1 (No UV or Scratch Additives) T2 Class U Higher Flow, Lower Density, UV Stable, Scratch Resistant T2 Class P Paintable Version of T2 (No UV or Scratch Additives) Mold Shrink, 48 hours after molding Average of flow and crossflow Note 2 ISO 294 Plaque
28、 Size 101.6 152 3.2 mm % Report Results Report Results Mean = 0.9 Range = 0.75 to 1.05 Mean = 0.9 Range = 0.75 to 1.05 Mold Shrink, 48 hours at 80 C after molding Average of flow and crossflow Note 2 ISO 294 Plaque Size 101.6 152 3.2 mm % Report Results Report Results Report Results Report Results C
29、oefficient of Linear Thermal Expansion (CLTE) Flow Direction (report one lot for information only) ASTM E831 or ISO 11359-2 105 mm/mm/C Report Results Report Results Report Results Report Results CLTE Cross Flow Direction (report one lot for information only) ASTM E831 or ISO 11359-2 105 mm/mm/C Rep
30、ort Results Report Results Report Results Report Results Flammability (report one lot for information only) GMW3232 mm/minute No burn or flame front transmission across the surface at a rate greater than 100 mm/minute. No burn or flame front transmission across the surface at a rate greater than 100
31、 mm/minute. No burn or flame front transmission across the surface at a rate greater than 100 mm/minute. No burn or flame front transmission across the surface at a rate greater than 100 mm/minute. Fogging (report one lot for information only) GMW3235-B Condensable Constituent mg 2.0 2.0 2.0 2.0 Odo
32、r (report one lot for information only) GMW3205 Code B Specimen 100 150 3.2 mm Not applicable Minimum 6 Minimum 6 Minimum 6 Minimum 6 Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from I
33、HS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW15549 Copyright 2012 General Motors Company All Rights Reserved March 2012 Page 5 of 9 Property Standard Units T1 Class U UV Stable, Scratch Resistant (Default if no type is specified) T1 Class P Paintable Version of T1 (No UV or Scratch Additives) T2 Cla
34、ss U Higher Flow, Lower Density, UV Stable, Scratch Resistant T2 Class P Paintable Version of T2 (No UV or Scratch Additives) Chemical Resistance GMW14334 (report one lot in Black for information only) GMW14334-A Rating 1 Not applicable Rating 1 Not required Rating 1 Not required Paintability GMW161
35、72 Not applicable Not required Table 1 for Interior Plastics per GMW16172 and Multiaxial Impact per GMW15520 Not required Table 1 for Interior Plastics per GMW16172 and Multiaxial Impact per GMW15520 Note 1: Heat aging according to ISO 188 Method A (air oven method). Note 2: For reference only - thi
36、s property does not indicate the shrinkage to be used to cut tools for production parts. 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 GMW
37、15549 Copyright 2012 General Motors Company All Rights Reserved March 2012 Page 6 of 9 Table 2: Compound Properties (Integrally Colored) Properties Standard Unit T1 Class U UV Stable Scratch Resistant (Note: Default if no type or class is specified) T2 Class U Higher Flow Lower Density UV Stable Scr
38、atch Resistant Notched Izod Impact at Cold Temperature ISO 180/1eA kJ/m2 4 at -30 C 4 at -40 C Notched Charpy Impact at Cold Temperature ISO 179/1eA kJ/m2 4 at -30 C 3.5 at -40 C Colorfastness to Light, Natural Weathering Color Change Surface Defects Weather Resistance per GMW3417 L1-F2-G1-T4 Test a
39、t the following intervals: 1250 MJ/m2(approximately 30 000 Langley) 2300 MJ/m2 (approximately 55 000 Langley) 3350 MJ/m2(80 000 Langley) 4400 MJ/m2 (105 000 Langley) Test specimen required to be returned to customer at each interval Not applicable E = 3.0 maximum No objectionable tackiness, blotchin
40、ess, or other undesirable surface defects. E = 3.0 maximum No objectionable tackiness, blotchiness, or other undesirable surface defects. Colorfastness to Light, Accelerated Color Change Surface Defects Xenon Arc according to GMW14162-D 300 kJ/m2 and 1240.8 kJ/m2 Note: Separate test panels are requi
41、red to be evaluated at each exposure level: 300 and 1240 Not applicable E = 3.0 maximum No objectionable tackiness, blotchiness, or other undesirable surface defects. E = 3.0 maximum No objectionable tackiness, blotchiness, or other undesirable surface defects. Alternatively: Colorfastness to Artifi
42、cial Light GMW 14162-C 26 MJ/m2 Not applicable Rating of 4 minimum (Also there shall be no more than a noticeable change in hue or chrome, and no objectionable tackiness, blotchiness, loss of grain, wrinkling or other undesirable effects) Rating of 4 minimum (Also there shall be no more than a notic
43、eable change in hue or chrome, and no objectionable tackiness, blotchiness, loss of grain, wrinkling or other undesirable effects) Colorfastness to Light, Natural Weathering Color Change Surface Defects Weather Resistance per GMW3417 L1-F2-G1-T4 Test at the following intervals: 1250 MJ/m2 (approxima
44、tely 30 000 Langley) 2300 MJ/m2 (approximately 55 000 Langley) 3350 MJ/m2 (80 000 Langley) 4400 MJ/m2 (105 000 Langley) Test specimen required to be returned to customer at each interval Not applicable E = 3.0 maximum No objectionable tackiness, blotchiness, or other undesirable surface defects. E =
45、 3.0 maximum No objectionable tackiness, blotchiness, or other undesirable surface defects. 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
46、GMW15549 Copyright 2012 General Motors Company All Rights Reserved March 2012 Page 7 of 9 Properties Standard Unit T1 Class U UV Stable Scratch Resistant (Note: Default if no type or class is specified) T2 Class U Higher Flow Lower Density UV Stable Scratch Resistant Scratch Resistance GMW14688-A-10
47、 N GM North American Appearance Engineering (NAAE) Interior Gloss Master Designation (WPEPGLD) Plastic Color Submission Plaque For initial approval in MATSPC, test one (1) lot in ebony (black), grey and neutral. For color approval, each color must be tested. For other regions use the Master Plaques
48、with the grains, colors and gloss levels as defined in the Acceptance Requirements Document (ARD) sheet of the corresponding GM Program. L 2.0 Across all grains except Modified Kruz 2.0 Across all grains except Modified Kruz Scratch Resistance after Heat Age Note 1, Note 2 GMW14688-A-10 N; GM NAAE Interior WPEPGLD Plastic Color Submission Plaque For initial approval in MATSPC, test one (1) lot in ebony (black), grey and neutral. For color approval, each color must be tested. L 2.0 Across all grains except Modified Kruz 2.0 Across
