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Shaped Refractories / Hot Face Kyanite Insulation Bricks

HFK Group 23 Hot Face Kyanite Insulation Bricks

HFK Group 23 is a grade in Shanker Agencies’ hot face kyanite insulation bricks range, rated for continuous service to 1300°C.

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HFK Group 23 grade hot face kyanite insulation bricks supplied by Shanker Agencies
Grade
HFK Group 23
Max service temperature
1300°C
Cold crushing strength
3.1 MPa
Bulk density
1.15 g/cc

HFK Group 23 technical specification

Typical values for HFK Group 23 hot face kyanite insulation bricks. Test methods vary by property and product family, so confirm the applicable standard against the manufacturer datasheet before specifying.

Apparent porosity
62%
Bulk density
1.15 g/cc
Cold crushing strength
3.1 MPa
Thermal conductivity
—
Plc
-0.90% @1250°C/24h
Max service temperature
1300°C

Where HFK Group 23 is used

Direct hot-face lining in furnaces and kilns operating to 1300°CHeat treatment, annealing and tempering furnace liningsKiln car decks and superstructure, where low heat storage cuts fuel per cycleBatch and intermittent furnaces with frequent heat-up / cool-down cyclesSingle-layer wall builds where a separate dense working lining is not justifiedMuffle and laboratory furnace linings

Is HFK Group 23 right for your application?

  • Rated for continuous service up to 1300°C.
Compare HFK Group 23 with other grades▾

Compare HFK Group 23 against every grade SAPL stocks in this family.

Swipe to compare grades

GradeApparent porosityBulk densityCold crushing strengthThermal conductivityPlcMax service temperature
HFK Group 23this grade62%1.15 g/cc3.1 MPa—-0.90% @1250°C/24h1300°C
HFK Group 23 (sample 2)60%1.20 g/cc3.7 MPa0.41 W/mK @600°C-0.89% @1250°C/24h1300°C
HFK Group 23 (sample 2) →

Send the drawing, dimensions, application and quantity for HFK Group 23 hot face kyanite insulation bricks. Our technical team reviews the requirement and advises on grade and fulfilment route.

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Grade designations & equivalents▾

How HFK Group 23 is referenced across Indian and export naming conventions.

SAPL grade codeHFK Group 23
Max service temperature1300°C

Installation notes

  1. 1Suitable for direct hot-face duty — no separate dense working lining required to 1300°C
  2. 2Use matching insulating mortar; a dense mortar joint will conduct heat straight through the wall
  3. 3Cut with a hand saw rather than a hammer and chisel; the structure is porous and chips
  4. 4Back up with CFI Group 16 where shell temperature needs to come down further

Disclaimer: values are typical and compiled by Shanker Agencies Pvt. Ltd. from standard industry data and published manufacturer specifications. They are indicative, not a guarantee. Confirm the exact grade datasheet before specifying. For a certified datasheet or quotation, contact info@shankeragencies.com or +91 98999 57888.