... degree % ≥65 Vicat softening point °C 133 Thermal conductivity coefficient w/m.k 0.35 Longitudinal reversion % ≤3.0 Thermal ... term 20°C,hoop stress12.0Mpa:1h,not cracking,no leakage 95°C,hoop stress 4.8Mpa,1h,not cracking, ... no leakage Long-term 95°C,hoop stress 4.7Mpa,22h, ... not cracking,no leakage 95°C,hoop stress4.6Mpa,165h,not cracking,no ...