The other size is optional or according to the requirements of customers. |
GB/T539-1995 | |||
Item |
JXB450 |
JXB350 |
JXB250 |
sile strength MPa≥ |
21.0 |
16.0 |
11.0 |
Aging Coefficient ≥ |
0.9 |
||
Burning Loss %≤ |
27 |
29 |
|
Density g/cm³ |
1.6 — 2.0 |
||
Compressibility % |
12 ± 5 |
||
Rebound degree |
42 |
40 |
|
Pliability |
No Crack |
||
Stress-relaxation≤ |
50 |
||
Steam Airtightness |
with the temperature of 440-450℃ and the pressure of 13-14MPa,Keep for 30 min without puncture |
with the temperature of 340-350℃ and the pressure of 9-10MPa,Keep for 30 min without puncture |
with the temperature of 240-250℃ and the pressure of 7-8MPa,Keep for 30 min without puncture |