K-FAC 19 (1900ºF Rated Mineral Wool Board: 1/2″ and 1″ Thick x 48″ x 96″ Sheets)

K-FAC 19 High Temperature board is a cost effective high strength mineral fiber board with outstanding thermal insulating efficiency. It is composed of mineral fiber and selected mineral additives. An organic binder that will dissipate above approximately 475ºF is used for low temperature handling. On initial start-up. heat rise should not exceed 15ºF per minute to allow the binder to dissipate without excessive temperature rise. This will occur only on the first startup and will not adversely affect the insulation value. An inorganic binder system allows K-FAC 19 high temperature board to be used at service temperatures up to 1900ºF. The board should not be subjected to direct flame impingement as a hot face material. It’s combination of high insulating value, high temperature resistance, and low cost make K-FAC 19 ideal for a variety of insulation applications.


Density ( lb/ft³ )18.5
Maximum Service Temperature ( ºF )1900
Thermal Conductivity at 500ºF (260ºC) ( BTU-in/hr-ft²-ºF )0.51
Thermal Conductivity at 800ºF (427ºC) ( BTU-in/hr-ft²-ºF )0.71
Thermal Conductivity at 400ºF (204ºC) ( BTU-in/hr-ft²-ºF )0.46
Thermal Conductivity at 700ºF (371ºC) ( BTU-in/hr-ft²-ºF )0.64
Thermal Conductivity at 600ºF (279ºC) ( BTU-in/hr-ft²-ºF )0.56
Standard Sheet Size ( in )12 x 36
Standard Thickness ( in )1 to 4
Compressive Strength at 10% Compression ( lb/ft² )4800
Min. Modulus of Rupture ( psi )95
Thermal Conductivity at 900ºF ( BTU-in/hr-ft²-ºF )0.80
Maximum Linear Shrinkage2.5 % After 24 hr. at 1900ºF


The K-FAC 19 properties listed represent typical average values obtained in accordance with accepted test methods and are subject to normal manufacturing variations. They are supplied as a technical service and are subject to change without notice. Check with your supplier to assure current information


K-FAC 19 is widely used in applications on precipitators, dryers, ducts and breeching, utility boilers, furnaces, kilns, etc. where high temperature insulating materials are required. The material is ideal for refractory backup insulation behind insulating firebrick and other refractory linings. It’s exceptional strength and easy handling facilitates the use of large-size boards which translates to reduced labor costs. K-FAC 19 can be cut quickly by hand with a knife or saw for fabrication and application on the job. The recommended attachment method is by impaling on pins or studs.


Foundry Service and Supplies is a full-service fabricator with an unmatched reputation for quick turnaround and competitive pricing. We can easily handle any job for fabricated or stock sheets, from high production quantities to prototypes. Our quality and reliability make Foundry Service the best choice for all of your high temperature material requirements.

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