RHT

Mineral

These mineral wool fiber insulating sheets are made from basalt rock and slag. This combination results in a non-combustible product with a melting point of approximately 2150°F, which gives it excellent fire resistance properties. This mineral wool is impervious to water, but remains permeable to water vapor.

Applications

The mineral wool sheets are non-combustible, are lightweight, water repellent and designed to allow for various application requirements. They are recommended as pipe and tank insulation where temperature demands as well as moisture resistance are critical. They possess a low moisture absorption, are non-corrosive and are chemically inert.

Specifications

Technical Data

Test Method - ASTM C 1104
Moisture resistance : Humidity absorption
RHT 80 < 0.01 %
RHT 40 < 0.01 %
RHT 60 < 0.01 %
Test Method - ASTM C 356
Dimensionnal stability : linear shrinkage
RHT 40 < 1 % à 650°C (1200°F)
RHT 60 < 1 % à 650°C (1200°F)
RHT 80 < 1 % à 650°C (1200°F)
Test Method - ASTM C 518 (C 177)
Thermal resistance : R value / inch at 75°F RSI value for 25.4 mm at 24°C
RHT 40 4.2/hr.ft².F/BTU
0.74 m² K/W
RHT 60 4.2/hr.ft².F/BTU
0.74 m² K/W
RHT 80 4.2/hr.ft².F/BTU
0.74 m² K/W
Test Method - ASTM C 61
Density
RHT 80 8lb/pi³ (128kg/m³)
RHT 60 6lb/pi³ (96kg/m³)
RHT 40 4lb/pi³ (64kg/m³)
Test Method - ASTM C 612
Compliance and performance : Mineral fiber block and board
RHT 80 Type IVB
RHT 40 Type IVA
RHT 60 Type IVB
Test Method - ASTM C 665
Corrosive resistance : Corrosiveness to steel
RHT 40 Pass
RHT 60 Pass
RHT 80 Pass
Test Method - ASTM C 795*
Corrosive resistance : Stainless steel stress corrosion
RHT 80 Conform
RHT 60 Conform
RHT 40 Conform
Test Method - ASTM C411
Maximum temperature : Hot surface performance
RHT 80 No reaction at 650°C (1200°F)
RHT 60 No reaction at 650°C (1200°F)
RHT 40 No reaction at 650°C (1200°F)
Test Method - ASTM E 136
Fire performance : Material behavior at 750°C (1382°F)
RHT 80 Non-combustible
RHT 40 Non-combustible
RHT 60 Non-combustible
Test Method - ASTM E 84 (UL 723)
Fire performance : Surface burning characteristics
RHT 60 Flame spread = 0
Smoke developed = 5
RHT 80 Flame spread = 0
Smoke developed = 5
RHT 40 Flame spread = 0
Smoke developed = 5
Test Method - CAN/ULC S102
Fire performance : Surface burning characteristics
RHT 80 Flame spread = 0
Smoke developed = 0
RHT 40 Flame spread = 0
Smoke developed = 0
RHT 60 Flame spread = 0
Smoke developed < 5
Test Method - CAN4-S114
Fire performance : Test for non-combustibility
RHT 60 Non-combustible
RHT 40 Non-combustible
RHT 80 Non-combustible
N.B. The information, details and values indicated are to the best of our knowledge. We recommend to conduct tests according to local conditions. The data is subject to some variations without notice.