1、 WORLDWIDE ENGINEERING STANDARDS Material Specification GMW16631 Extrusion Grade Acrylonitrile Butadiene Styrene Copyright 2011 General Motors Company All Rights Reserved August 2011 Originating Department: North American Engineering Standards Page 1 of 5 1 Scope 1.1 Material Description. This stand
2、ard describes extrusion grade, unfilled, heat stabilized, acrylonitrile butadiene styrene terpolymer. 1.2 Symbols. The material abbreviation according to ISO 11469 is ABS. 1.3 Typical Applications. Typical applications include thermoforming for emblems and simple thermoforming parts. 1.4 Remarks. No
3、t applicable. 2 References Note: Only the latest approved standards are applicable unless otherwise specified. 2.1 External Standards/Specifications. ASTM E831 ISO 1133 ISO 75-1/2 ISO 1183 ISO 178 ISO 2580-2 ISO 179/1eA ISO 3167 ISO 188 ISO 3795 ISO 294 ISO 11359-2 ISO 294-3/4 ISO 11469 ISO 306 SAE
4、J1885 ISO 527-1/2 2.2 GM Standards/Specifications. GMW3013 GMW3235 GMW3059 GMW3417 GMW3205 GMW14162 GMW3221 GMW14334 GMW3232 2.3 Additional References. TMC003 Material Safety Data Sheet guidance documents (available at ). 3 Requirements Materials approved to this specification shall meet the require
5、ments of GMW3013, General Requirements for Handling of Technical Terms of Delivery for Plastics. 3.1 Requirements on Delivery. Important physical, mechanical and thermal properties that characterize the material are summarized in Table 1 and Table 2. The color shall be specified on drawings, in mate
6、rial specifications and otherwise. Note: For each product, 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. 3.2 Requirements on Test Specimens. Unless other
7、wise specified, injection molding of test specimens shall be accomplished per ISO 294 with the conditions for injection molding from ISO 2580-2. Test methods and Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking perm
8、itted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW16631 Copyright 2011 General Motors Company All Rights Reserved August 2011 Page 2 of 5 specimen dimensions are also to be in accordance with ISO 2580-2 with the following additions: use ISO 3167, Type 1A, thickness 4 mm, for t
9、ensile and flexural properties. All tests shall be performed on specimens 40 h minimum after molding and immediately following a conditioning period of 24 h minimum in a controlled atmosphere per GMW3221, Code A, unless otherwise specified. All tests shall be performed on unannealed specimens. The v
10、alues specified in Table 1 shall be met by test specimens 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%
11、 from the specified minimum value. 3.3 Chemical Requirements. All parts manufactured from molding compounds shall be resistant to the media they contact at their place of use. 3.4 Compound Properties. See Tables 1 and 2. The following are also required for full standard approval. The minimum number
12、of lots per test required for the following properties is one in natural: Stress Strain Curve at multiple temperatures (for example -30 C, 23 C, 85 C). See GMW3013 for all test procedures and parameters. 3.5 Performance Requirements. Performance requirements shall be specified on part drawings or in
13、 component specifications. All parts manufactured from molding compounds shall be resistant to the media they contact, such as aliphatic and aromatic hydrocarbons, fuels, lubricants, oils, greases and alcohols, at their places of use. 3.6 Process Requirements. Not applicable. Table 1: Compound Prope
14、rties (Natural and Black) Property Standard Note 1 Units Requirement Density ISO 1183, Method A, 10 x 10 x 4 mm g/cm3 1.03 to1.07 Tensile Modulus ISO 527-1/2, Specimen ISO 3167, 4 mm thick Type A bar, Test speed 1 mm/minute; between 0.05 to 0.25% strain MPa 2000 Tensile Stress at Yield ISO 527-1/2,
15、Specimen ISO 3167, 4 mm thick Type A bar, test speed 50 mm/minute MPa 40 Tensile Elongation at Break ISO 527-1/2, Specimen ISO 3167, 4 mm thick Type A bar, test speed 50 mm/minute % Report Poissons Ratio ISO 527-1/2 Specimen ISO 3167, 4 mm thick Type A bar, tensile method, test speed 1 mm/minute No
16、units Report Flexural Modulus +22 C ISO 178, Specimen 80 x 10 x 4 mm, 2 mm/minute, 64 mm span, chord (0.05 to 0.25% strain) MPa 2000 Notched Charpy Impact Strength at 22 C ISO 179/1eA, Specimen Machined V-notch, r = 0.25 mm, 80 x 10 x 4 mm kJ/m2 20 Notched Charpy Impact Strength at -30 C ISO 179/1eA
17、, Specimen Machined V-notch, r = 0.25 mm, 80 x 10 x 4 mm kJ/m2 10 Melt Mass-Flow Rate (MFR) or Melt Volume-Flow Rate (MVR) ISO 1133, 10 kg load at 220 C temperature g/10 minute or cm3/10 minute Report Mold Shrink - longitudinal - 48 h after Molding ISO 294-3/4, plaque size 60 x 60 x 2 mm type D2 pre
18、ferred or larger with maximum thickness 4 mm % Report Mold Shrink - transverse - 48 h after Molding ISO 294-3/4, plaque size 60 x 60 x 2 mm type D2 preferred or larger with maximum thickness 4 mm % Report Heat Deflection Temperature (HDT) - 0.45 MPa ISO 75-1/2, Method B, Specimen 80 x 10 x 4 mm, tes
19、t flatwise, unannealed (only if required in specification) C 80 HDT - 1.8 MPa ISO 75-1/2, Method A, Specimen 80 x 10 x 4 mm, test flatwise, unannealed C 90 Vicat Softening Temperature ISO 306, Specimen 10 x 10 x 4 mm, heating rate 50 K/h, load 50 N C 90 Copyright General Motors Company Provided by I
20、HS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW16631 Copyright 2011 General Motors Company All Rights Reserved August 2011 Page 3 of 5 Property Standard Note 1 Units Requirement Coef
21、ficient of Linear Thermal Expansion (CLTE) - Parallel (Flow) ASTM E831 or ISO 11359-2 Thermomechanical Analyzer (TMA), TMA, Mean secant value over the temperature range -30 to +110 C 10-6 mm/mm/C Report CLTE - Normal (Cross Flow) ASTM E831 or ISO 11359-2 (TMA), TMA, Mean secant value over the temper
22、ature range -30 to +110 C 10-6 mm/mm/C Report Tensile Strength Retention after Heat Aging 1000 h at 80 C ISO 527-1/2 Sample: 150 x 10 x 4 mm thick Type A bar test speed 50 mm/minute, ISO 188 % 75 Tensile Elongation at break retention after Heat Aging 1000 h at 80 C ISO 527-1/2 Sample: 150 x 10 x 4 m
23、m thick Type A bar test speed 50 mm/minute, ISO 188 % 75 Flammability GMW3232 or ISO 3795 report per requirements of GMW3232, sample 355 2 mm by 100 2 mm 2 0.2 mm thick mm/minute 100 maximum Chemical Resistance GMW14334-A No units Rating 1 Odor GMW3205 Code B, ratio 1:100 No units 6 Fogging GMW3235-
24、B condensable constituents mg 2 Note 1: Standard test specimen and test setup should follow GMW3013. Table 2: Compound Properties (Integrally Colored) Note 1 Property Standard Note 2 Units Requirement Colorfastness to Light, Natural Weathering GMW3417-L1-F2-G1-25 000 Total Normalized Radiation (TNR)
25、 langleys at +85 C Delta E 3.0 No objectionable defects allowed Colorfastness to Light, Accelerated SAE J1885, 263 kJ/m2 or GMW14162/B/14 MJ/m Delta E 3.0 No objectionable defects allowed or Rating 4 minimum (Also, there shall be no more than a noticeable change in hue or chroma, and no objectionabl
26、e tackiness, blotchiness, loss of grain, wrinkling, or other undesirable effects.) Notched Charpy Impact Strength at 22 C ISO 179/1eA, Specimen Machined V-notch, r = 0.25 mm, 80 x 10 x 4 mm kJ/m2 15 Flammability GMW3232 or ISO 3795 report per requirements of GMW3232, Sample 355 2 mm by 100 2 mm 2 0.
27、2 mm thick mm/minute 100 Note 1: Only test for interior performance, usage for exterior components should be kept to zero or extremely low weatherability performance areas of the vehicle as determined by materials engineer responsible for each part. Note 2: Standard test specimen and test setup shou
28、ld follow GMW3013. 4 Manufacturing Process Not applicable. 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
29、, 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 for conformity with the requirements of this material specification and approved by the responsible Engineering department prior to c
30、ommencement of delivery of bulk supplies. 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 GMW16631 Copyright 2011 General Motors Company All
31、 Rights Reserved August 2011 Page 4 of 5 A new approval 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
32、 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 apply for a new release. If not otherwise agreed, all release tests shall be repeated and documented by the supplier prior to commence
33、ment 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. 5.4 Initial Source Approval. No shipments shall be made by any supplier until representative initial production samples have been ap
34、proved by the appropriate Materials Engineering department(s) as meeting the requirements of this specification. 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 o
35、f the Material Safety Data Sheet/Safety Data Sheet must 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
36、specific country General Motors TMC003 Material Safety 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 qualificati
37、ons of an approved source are required for this standard. Only sources listed in the GM Materials File (MATSPC) under this standard number have been qualified by Engineering as meeting the requirements of this standard. 7 Notes 7.1 Glossary. MATSPC: Global repository of GM approved materials for cor
38、responding GM Engineering Standards. 7.2 Acronyms, Abbreviations, and Symbols. ABS Acrylonitrile Butadiene Styrene CLTE Coefficient of Linear Thermal Expansion GHS Globally Harmonized System HDT Heat Deflection Temperature MFR Melt Flow Rate MSDS Material Safety Data Sheet MVR Melt Volume Flow Rate
39、SDS Safety Data Sheet TMA Thermomechanical Analyzer TNR Total Normalized Radiation 8 Coding System This standard shall be referenced in other documents, drawings, etc., as follows: Material per GMW16631 Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for
40、 ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW16631 Copyright 2011 General Motors Company All Rights Reserved August 2011 Page 5 of 5 9 Release and Revisions This standard was originated in June 2011. It was first approved by the Pl
41、astics Global Subsystem Leadership Team in August 2011. It was first published in August 2011. Issue Publication Date Description (Organization) 1 AUG 2011 Initial publication. Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
