FIRECLAY BRICKS
Economical, thermally stable bricks for general-purpose furnace linings to 1400°C
PRODUCT OVERVIEW
Fireclay bricks are manufactured from naturally occurring fire clays containing 25–45% Al₂O₃. They offer a reliable combination of thermal stability, thermal shock resistance and moderate slag resistance at an economical price point. Widely used for backup linings, boiler settings, and general industrial furnaces across India.
KEY PROPERTIES
Al₂O₃ Range
26 – 42%
Max Service Temp
Up to 1400°C
Bulk Density
1.8 – 2.1 g/cc
Thermal Shock
Good
Cost
Most economical
Bond Type
Fired ceramic bond
APPLICATIONS
TECHNICAL SPECIFICATIONS
| Grade | Al₂O₃ | Fe₂O₃ | Porosity | CCS | Max Temp |
|---|---|---|---|---|---|
| STD-30 | 28-30% | 2.5% | 22-26% | 25 MPa | 1300°C |
| STD-40 | 38-42% | 2.0% | 20-24% | 35 MPa | 1400°C |
| HFK-28 | 26-30% | 2.5% | 24-28% | 20 MPa | 1250°C |
| HFK-32 | 30-34% | 2.0% | 22-26% | 28 MPa | 1300°C |
| HFK-36 | 34-38% | 2.0% | 20-24% | 32 MPa | 1350°C |
* Test conditions: IS 1528 (India) / ASTM C-133 / EN 1402. Values are typical — exact data sheets available on request.
AVAILABLE GRADES
INSTALLATION NOTES
- 1
Use fireclay mortar of matching composition for jointing
- 2
Keep joint width between 2–4 mm
- 3
Dry-out at 25°C/hr up to 120°C, hold 8 hrs minimum before heating to operating temp
- 4
Suitable for both straight and arch courses — wedge bricks available on request
WHY BUY FROM SHANKER AGENCIES
Shanker Agencies stocks fireclay bricks from CUMI and Calderys in standard IS sizes. Bulk discounts available. Same-day dispatch from Delhi warehouse for quantities up to 5 MT.
PARTNER BRANDS
QUICK INFORMATION
Max Temperature
1400°C
Category
Shaped Refractories
Grades Available
5 Standard Grades
Industries Served
Brands We Supply
• CUMI Super Refractories
• Calderys India
• TRL Krosaki
📦 Quick Delivery
Standard grades in stock — Delhi warehouse. Pan-India delivery in 2–5 days. Same-day dispatch for urgent orders ≤ 2 MT.
MORE IN SHAPED REFRACTORIES
High Alumina Bricks
Superior thermal stability for steel ladles, cement kilns and glass furnaces up to 1850°C
Insulating Fire Bricks (IFB)
Lightweight backup insulation reducing heat loss and energy bills
Basic Bricks
Magnesia-based bricks resisting basic slags in BOF, EAF and cement kilns
Silicon Carbide Bricks
Outstanding abrasion and wear resistance with high thermal conductivity
READY TO ORDER OR NEED A SAMPLE?
Our engineers can recommend the exact grade for your application. Sample kits available for trials. No minimum order on standard grades.