What is the ITT transient specification?

What is the ITT transient specification?

• A. 870 °C
• B. 860 °C (5 sec)
• C. 980-1090 °C (2 sec); 1090 °C max
• D. 755-810 °C; 810 °C max

Answer: (B)

Transient high-temperature exposure is what this item tests. The ITT transient specification defines the maximum temperature the part may briefly reach and how long that spike can last. For this item, the allowed transient condition is 860 °C for 5 seconds. That means the part must endure a short 5-second exposure at 860 °C without unacceptable change or damage. The other options either specify different temperatures or durations and don’t match this defined transient exposure.

Transient high-temperature exposure is what this item tests. The ITT transient specification defines the maximum temperature the part may briefly reach and how long that spike can last. For this item, the allowed transient condition is 860 °C for 5 seconds. That means the part must endure a short 5-second exposure at 860 °C without unacceptable change or damage. The other options either specify different temperatures or durations and don’t match this defined transient exposure.