Material: PIR (Polyisocyanurate) is a similar material to PUR. Both PUR and
Density: PIR are manufactured from the two components isocyanate and polyol. PIR has superior thermal resistance and dimensional stability. PIR is an improvement of previously used PUR boards (polyurethane).
Service: 

• PIR (Polyisocyanurate) is suitable for all pipeworks of temperatures -150°C to +130°C
• It has low density but high insulating properties
• This product has the lowest thermal permeability compared to other insulation materials
• Prevents the thermal losses in hot or cold pipework
• Long life insulating material
• Easy to application

Material: 

• Complies with ASTM C 591
• 80 kg/m³ acc. to ASTM C 591 120 kg/m³ acc. to ASTM C 591 200 kg/m³ acc. to ASTM C 591
• Temperature resistance -150°C to +130°C

Compressive Strength: min 600 kPa acc. to ASTM C 591 for Density 80 kg/m3 min 1200 kPa acc. to ASTM C 591 for Density 120 kg/m3 min 1750 kPa acc. to ASTM C 591 for Density 200 kg/m3

Thermal Conductivity at 93°C;

max 0,039 W/(m*K) acc. to ASTM C 591 for Density 80 kg/m3 max 0,044 W/(m*K) acc. to ASTM C 591 for Density 120 kg/m3 max 0,044 W/(m*K) acc. to ASTM C 591 for Density 200 kg/m3

Surface Burning Characteristics: Flame spread index max 25 acc. to ASTM E 84 Smoke developed index max 450 acc. to ASTM E 84