AS 1638-2008

1 - AS 1638-2008 MOTOR VEHICLES-LIGHT ALLOY ROAD WHEELS
4 - PREFACE
5 - CONTENTS
6 - 1 SCOPE
6 - 2 REFERENCED DOCUMENTS
7 - 3 DEFINITIONS
7 - 3.1 Average radial runout
7 - 3.2 Batch
7 - 3.3 Crack
7 - 3.4 Feature
7 - 3.5 Fracture
7 - 3.6 Gross vehicle mass
7 - 3.7 Light alloy road wheel
7 - 3.8 Maximum wheel loading
7 - 3.9 Offset
7 - 3.10 Runout
7 - 3.11 Type
8 - 3.12 Unladen mass
8 - 3.13 Wheel centre
8 - 4 CONSTRUCTION REQUIREMENTS
8 - 4.1 General
8 - 4.2 Finished dimensions
8 - 4.2.1 General
8 - 4.2.2 Wheel modification
8 - 4.2.3 Rim profile and valve hole dimensions
8 - 4.2.4 Other dimensions and features
8 - 4.3 Runout
9 - 4.4 Surface finish
9 - 4.5 Rim-to-centre attachment
9 - 5 DAMAGED WHEELS
9 - 5.1 Damaged wheels during manufacturing
9 - 5.2 Damaged wheels-After manufacture
9 - 6 PERFORMANCE REQUIREMENTS
9 - 6.1 Pressure tightness test
9 - 6.2 Dynamic cornering fatigue test
12 - 6.3 Dynamic radial fatigue test
13 - 6.4 Impact test
13 - 7 TYPE APPROVAL
13 - 7.1 Selection of specimens
13 - 7.2 Performance tests
13 - 7.3 Accompanying documentation
13 - 8 MARKING
15 - APPENDIX A - DYNAMIC CORNERING FATIGUE TEST
15 - A1 SCOPE
15 - A2 PRINCIPLE
15 - A3 EQUIPMENT
15 - A3.1 Test machine
15 - A3.2 Loading system
15 - A4 TEST LOAD
16 - A5 SETTING UP FOR TEST
16 - A6 TEST PROCEDURE
16 - A7 REPORT
18 - APPENDIX B - MEANS FOR DEMONSTRATING COMPLIANCE WITH THIS STANDARD
18 - B1 SCOPE
18 - B2 STATISTICAL SAMPLING
18 - B3 PRODUCT CERTIFICATION
19 - B4 SUPPLIER'S QUALITY MANAGEMENT SYSTEM
19 - B5 OTHER MEANS OF ASSESSMENT
20 - APPENDIX C - DYNAMIC RADIAL FATIGUE TEST
20 - C1 SCOPE
20 - C2 EQUIPMENT
20 - C2.1 Test machine
20 - C2.2 Loading system
20 - C2.3 Tyre
20 - C3 TEST LOAD
21 - C4 SETTING UP FOR TEST
21 - C5 TEST PROCEDURE
21 - C6 REPORT
23 - APPENDIX D - THIRTY DEGREE IMPACT TEST
23 - D1 SCOPE
23 - D2 PRINCIPLE
23 - D3 EQUIPMENT
23 - D3.1 Test machine
23 - D3.2 Tyre
24 - D4 TEST ENERGY
24 - D5 SETTING UP FOR TEST
24 - D6 TEST PROCEDURE
24 - D6.1 Calibration of system
24 - D6.2 Procedure
24 - D7 REPORT

Specifies the minimum requirements for the type approval based on performance testing of light aluminium alloy and magnesium alloy road wheels for vehicles with a gross mass not exceeding 3.5 t.

This Standard specifies the minimum requirements for the type approval based on performance testing of light aluminium alloy and magnesium alloy road wheels for vehicles with a gross mass not exceeding 3.5 t. The wheels may be cast, wrought or of composite construction.It applies to wheels which are designed for normal driving conditions, and does not purport to apply to wheels which will not fracture or fail under conditions such as may be experienced in an accident. It should be noted that wheels conforming to this Standard may fracture under conditions similar to those which produce severe buckling or failure in steel wheels.This Standard does not specify the materials to be used in the manufacture of the wheels. Suitable alloy designations may be selected from AS 1874, for aluminium alloys, and EN 1753 for magnesium alloys.NOTES:1 This Standard does not apply to trailer wheels, caravan wheels and motorcycle wheels.2 Wheels complying with this Standard are also required to comply with the requirements of relevant statutory authorities3 For guidance on how to comply with this Standard refer to Appendix B.

Originated as AS 1638-1974.
Previous edition 1991.
Third edition 2008.