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Pratt &Whitney PWA36604 Revision C Hot Corrosion |
TEST STANDARD:
To achieve "Conformance", 3.2.3.2 Hot Corrosion: Test specimens shall show no evidence of hot corrosion greater than 0.0002 inches in depth when tested and examined in accordance with the procedure in Appendix A (see Test Method below).
TEST RESULT:
| ALLOY | TEMPERATURE | DEPTH OF ATTACK(inches) | RESULT |
|---|---|---|---|
| AMS 5544 (Waspaloy) | 1600°F ± 10°F | 0.0001 | EnTron Conforms |
| AMS 5536 (Hastelloy X) | 1600°F ± 10°F | 0.0001 | EnTron Conforms |
| AMS 5608 (Haynes 188) | 1600°F ± 10°F | 0.0001 | EnTron Conforms |
| AMS 5508 (Greek Ascoloy) | 1050°F ± 10°F | 0.0001 | EnTron Conforms |
| AMS 6359 (4340 Steel) | 750°F ± 10°F | 0.0001 | EnTron Conforms |
| AMS 4037 (2024-T3 Aluminum) | 600°F ± 25°F | 0.0001 | EnTron Conforms |
| AMS 4375 (AZ31B-0 Magnesium) | 600°F ± 25°F | 0.0001 | EnTron Conforms |
TEST METHOD:
TESTING WAS CONDUCTED IN ACCORDANCE WITH APPENDIX A:
- Preparation of Test Specimens:
- 1.1Prepare one panel of each of the following alloys for each cleaner material to be tested, plus one additional panel of each to serve as a control: AMS 4037, AMS 4375, AMS 5508, AMS 5536, AMS 5544, AMS 5608, AMS6359. Take care not to contaminate the control panels with the cleaner being tested.
- 1.2 Panels shall be a minimum of 0.050 inch thick, with a minimum surface area of 0.5 square inches.
- 1.3 Mark one side of each panel with the material specification and cleaner identification using silver pencil or mechanical engraving to ensure identification after thermal exposure.
- 1.4 Polish the side opposite panel identification to a finish equivalent to that produced by 600 grit emery cloth.
- Preparation of Test Specimens for Exposure:
- 2.1 Arrange test panel(s) and control(s), polished side up, on a suitable sheet of high temperature alloy or in a container that will withstand test temperatures.
- 2.2 Cover the surface of the test panel(s) with the cleaner to be tested. Do not allow the cleaner solution to contact the control panel(s).
- 2.3 Dry the test panels in a low temperature oven or other low heat source such as heat lamps.
- Thermal Exposure:
- 3.1 Expose coated test panel(s) for a minimum of eight (8) hours and a maximum often (10) hours at the temperatures shown.