1、 WORLDWIDE ENGINEERING STANDARDS Material Specification GMW16558 Polyamide 66 - Heat Stabilized, Impact Modified, UV Stabilized Copyright 2011 General Motors Company All Rights Reserved September 2011 Originating Department: North American Engineering Standards Page 1 of 5 1 Scope 1.1 Material Descr
2、iption. This standard covers properties of various types of heat stabilized, impact modified, UV stabilized polyamide 66 (nylon 66), which are used in injected form for molded components. 1.2 Symbols. The material abbreviation according to ISO 11469 is PA66-I. 1.3 Typical Applications. Typical appli
3、cations include the following: interior components. 1.4 Remarks. The specification is classified by level of impact modifiers: x T1: High Impact modified. x T2: Very High impact modified. 2 References Note: Only the latest approved standards are applicable unless otherwise specified. 2.1 External St
4、andards/Specifications. ASTM D3763 ISO 294 ISO 3146 ISO 15512 ASTM D6869 ISO 527 ISO 3795 SAE J1545 ISO 75 ISO 1183 ISO 6603-1/2 ISO 179/1eA ISO 1873-2 ISO 11357-3 ISO 188 ISO 1874-2 ISO 11469 2.2 GM Standards/Specifications. GMW3013 GMW3221 GMW3417 GMW14335 GMW3059 GMW3232 GMW14162 GMW3205 GMW3235
5、GMW14334 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 Plastics. 3.1 Requirements on
6、 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 material specifications and otherwise. 3.2 Requirements on Test Specimens. Unless otherwise specified, injection molding
7、 of test specimens shall be accomplished per ISO 294 with the conditions for injection molding from ISO 1874-2. Test methods and specimen dimensions are also to be in accordance with ISO 1874-2. All values indicated herein are based on material considered to be in the dry-as-molded state with moistu
8、re content of 0.2% maximum (ASTM D6869, ISO 15512 Method A or B, or GMW14335). Immediately after molding, per ISO 1874-2, specimens shall be sealed in moisture-proof containers and stored at 22 3 C for at least 24 h. All tests shall be performed on unannealed specimens immediately after their remova
9、l from the containers in a controlled atmosphere per GMW3221, Code A, unless otherwise specified. In addition, tests specified at temperatures below or above 22 3 C shall be conducted at the specified temperature using specimens conditioned at the specified temperature for 4 h minimum. Copyright Gen
10、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 GMW16558 Copyright 2011 General Motors Company All Rights Reserved September 2011 Page 2 of 5 The values
11、specified in Table 1 shall be met by test specimens in natural, black or in a standard sampled color if natural or black are not available. The values specified in Table 2 shall be met by four typical interior colors for approval to the specification and by test specimens in specific colors as requi
12、red during color development. 3.3 Compound Properties. See Tables 1 and 2. The following are also required for full standard approval. The minimum number of lots per test required for the following properties is one in natural: Poissons Ratio, Coefficient of Linear Thermal Expansion (CLTE), Mold Shr
13、inkage, Stress Strain Curve at multiple temperatures (for example -30 C, 23 C, 85 C). See GMW3013 for all test procedures and parameters. 3.4 Performance Requirements. Performance requirements shall be specified on part drawings or in component specifications. All parts manufactured from molding com
14、pounds 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. Table 1: Compound Properties (Natural and Black) High Impact Grade, T1 Very High Impact Grade, T2 Property Note 1 Standard Units Va
15、lue Value Density ISO 1183 g/cm3 Target Range 1.07 to 1.12 Target Range 1.04 to 1.11 Moisture Content GMW14335 or ISO 15512, Method A or B % 0.2 Tensile Modulus ISO 527 MPa 1800 to 2900 1500 to 2400 Stress at Break ISO 527 MPa 50 to 70 40 to 60 Stress at Break after Heat Aging ISO 188 ISO 527 1000 h
16、 at 110 C % Retention 75 Notched Charpy Impact Strength ISO 179/1eA kJ/m2 at +23 C 13 60 at -30 C 7 10 Notched Charpy Impact Strength after Heat Aging ISO 188 ISO 179/1eA 1000 h at 110 C % Retention 75 Multiaxial Impact Interior ASTM D3763 6.6 m/s J at Maximum Load at +23 C 30/30 Ductile at RT 40 28
17、 at Low Temp 24/30 Ductile at LT 50 (0 C) 30 (-30 C) Multiaxial Impact Interior or Exterior ISO 6603-1/2 4.4 m/s J at Maximum Load at +23 C 30/30 Ductile at RT Report Report at Low Temp 24/30 Ductile at LT Report Report Melting Temperature ISO 3146 or ISO 11357-3 C Target Range 250 to 270 Target Ran
18、ge 250 to 270 Heat Deflection Temperature under Load 1.8 MPa ISO 75 C 50 50 Fogging Gravimetric GMW3235-B-Y2-T2 mg 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 WORLDWI
19、DE ENGINEERING STANDARDS GMW16558 Copyright 2011 General Motors Company All Rights Reserved September 2011 Page 3 of 5 High Impact Grade, T1 Very High Impact Grade, T2 Property Note 1 Standard Units Value Value Odor GMW3205 Dry Condition Rating 6 Flammability GMW3232 or ISO 3795 All reporting must b
20、e in accordance with GMW3232 mm/minute SE or 100 Note 1: These values shall be determined in dry as-molded condition. The mechanical properties of types conditioned to equilibrium at room temperature and 50% relative humidity have significantly altered values. Table 2: Compound Properties (Integrall
21、y Colored) High Impact Grade, T1 Very High Impact Grade, T2 Property Note 1 Standard Units Value Value Colorfastness to Light Color Change GMW14162, Cycle D, 601.6 kJ/m2 or GMW14162, Cycle B 100 C, 28 MJ/m2 SAE J1545 Note 2 No objectionable defects allowed. E 3.0, Visual evaluation overrides numeric
22、al scale approval. Natural Weathering Color Change GMW3417, L1-F2-G1 55 k Langleys, 95 C SAE J1545 Note 2 No objectionable defects allowed. E 3.0, Visual evaluation overrides numerical scale approval. Notched Charpy Impact Strength at +23 C at -30 C ISO 179/1eA kJ/m2 10 8 50 8 Resistance to Cleaning
23、 Agents GMW14334 - A Rating 1 Note 1: These values shall be determined in dry as-molded condition. The mechanical properties of types conditioned to equilibrium at room temperature and 50% relative humidity have significantly altered values. Note 2: CIELAB color space, 10 degree observer, illuminant
24、 D65, specular component included, sphere geometry, before and after exposure. 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
25、 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 for conformity with the requirements of this material specification and a
26、pproved 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 not otherwise agreed, all testing and documentation normally required for i
27、nitial 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 apply for a new release. Copyright General Motors Company Provided by IHS
28、 under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW16558 Copyright 2011 General Motors Company All Rights Reserved September 2011 Page 4 of 5 If not otherwise agreed, all release tests sha
29、ll 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. 5.4 Initial Source Approval. No shipments shall be made by any suppli
30、er until representative initial production samples have been approved 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 com
31、position 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 System of Classification and Labeling of Chemicals (GHS) requirements or other country-specific MSDS/SDS requirements. In add
32、ition, 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. 5.6 All materials supplied to this standard must comply with the requirements of GMW3059, Restricted and Reportable S
33、ubstances for Parts. 6 Approved Sources Engineering qualifications 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 Gloss
34、ary. MATSPC: Global repository of GM approved materials for corresponding GM Engineering Standards. 7.2 Acronyms, Abbreviations, and Symbols. CLTE Coefficient of Linear Thermal Expansion GHS Globally Harmonized System MSDS Material Safety Data Sheet SDS Safety Data Sheet 8 Coding System This standar
35、d shall be referenced in other documents, drawings, etc., as follows: Heat Stabilized, Impact Modified, UV stabilized Polyamide 66 per GMW16558P-PA66-TZ Where: GMW16558 = Document Identification P = Material Type, P=Plastic PA66 = Material Category TZ = Impact Level defined in Section 1.4 For exampl
36、e, GMW16558P-PA66-T1 specifies a high impact modified, heat stabilized, UV stabilized polyamide 66. 9 Release and Revisions This standard was originated in March 2011. It was first approved by the Global Plastics Team in September 2011. It was first published in September 2011. Issue Publication Dat
37、e Description (Organization) 1 SEP 2011 Initial publication. (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-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW16558 Copyr
38、ight 2011 General Motors Company All Rights Reserved September 2011 Page 5 of 5 Cross Reference of Replaced Specifications GMW16558 Replaced Specifications GMW16558P-PA66-T1 GMP.PA66.079 GMW16558P-PA66-T2 GMP.PA66.078 Approval to the replaced specification does not guarantee approval to this specification. Recertification is required. Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
