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Physical Property Indexes | ||||||||||
Item | Class | |||||||||
T1 | T2 | T3 | T4 | |||||||
Test temperature | ||||||||||
≤100℃ | ≤125℃ | ≤150℃ | ≤175℃ | |||||||
Change range allowed | ||||||||||
Hardness | The difference between the former after the aging | +20 | +20 | ±20 | ±20 | |||||
The maximum value after aging | 85 | 85 | 85 | 85 | ||||||
The tensile strength | The performance rate /% | -25 | -30 | -40 | -40 | |||||
After aging the lowest Mpa | 12 | 10 | 5 | 5 | ||||||
Tensile elongation | After aging rate /% | -50 | -50 | -55 | -55 | |||||
After aging the lowest /% | 200 | 200 | 180 | 180 |