The following topics are included in this report:

1. Section 2—References
2. Section 3—Definitions
3. Section 4—Material Selection
4. Section 5—Production Considerations
5. Section 6—Initial Structural Integrity
6. Section 7—In-Vehicle Testing
7. Section 8—Laboratory Testing

The Material Selection section lists environmental factors and material properties which should be considered when determining appropriate fan material(s) for a given application. The Production Considerations section covers various aspects of machine selection, mold design, and process control. The Initial Structural Integrity section lists factors which should be considered in addition to those covered by Section 3 of SAE J1390. The In-Vehicle Testing section lists factors which should be considered in addition to those covered by Section 4 of SAE J1390. The Laboratory Testing section addresses some test considerations and methods for nonmetallic fans which differ from those used with metallic fans or which were not included in Section 5 of SAE J1390.