High Alumina Bricks | Shaped Refractories
HA-90 High Alumina Bricks
- IS 4041
- AL-90
- 90% alumina
- SK 40
88-92%
Al₂O₃ Content
Typical value
70 MPa
Cold Crushing Strength
Typical value
1600°C
Max Service Temperature
Typical value
1.0%
Fe₂O₃ Content
Typical value
14-18%
Apparent Porosity
Typical value
- Supplying refractories since 1980
- Dispatch from Delhi
- Same-day dispatch of standard stock items
- Pan-India & export
Technical Specification
Typical values. Exact values depend on manufacturer, formulation and applicable test standard.
Chemical Composition (Typical)
| Parameter | Value |
|---|---|
| Al₂O₃ content | 88-92% |
| Fe₂O₃ content | 1.0% |
Physical Properties (Typical)
| Parameter | Value |
|---|---|
| Apparent porosity | 14-18% |
| Cold crushing strength | 70 MPa |
| Max service temperature | 1600°C |
| Standard brick size | 230 × 115 × 75 mm |
HA-90 Datasheet
Chemical analysis, physical properties, test methods and available sizes for HA-90 High Alumina Bricks, shared on request.
Key Characteristics
Taken from the HA-90 catalogue values above.
Alumina content
88-92% Al₂O₃
Service temperature
Rated to 1600°C
Crushing strength
CCS 70 MPa
Standard size and shapes
230 × 115 × 75 mm; shapes to drawing
Apparent porosity
14-18%
Typical Applications
Specified for HA-90
Steel & iron
Blast furnace hearth
Also used across the high alumina bricks range
Steel & iron
Steel ladles & torpedo cars; Blast furnace bosh & belly; Reheating furnace roof & walls; EAF upper shell & roof; Coke oven doors & jambs
Cement industry
Cement rotary kiln burning zone & ladles
Glass industry
Glass tank regenerator chambers
Petrochemical & fertiliser
Petrochemical reformer furnaces
Available Shapes
Straight Brick
Wedge Brick
Arch Brick
Skew & Special Shapes
Standard brick 230 × 115 × 75 mm. Shapes to drawing, sample or requirement.
Arch, wedge, skew and special shapes are available against drawing.
FAQ
What is HA-90?
HA-90 is the 88-92% Al₂O₃ grade in our high alumina bricks range, rated to 1600°C. Typical catalogue values: Al₂O₃ content 88-92%; Fe₂O₃ content 1.0%; apparent porosity 14-18%; cold crushing strength 70 MPa; max service temperature 1600°C. It is also referred to as AL-90, 90% alumina and SK 40. Standard: IS 4041. Confirm the exact figures on the grade datasheet before specifying.
What is the alumina content of HA-90?
HA-90 carries 88-92% Al₂O₃ with Fe₂O₃ 1.0%. Under IS 4041, high alumina bricks are those with 45% Al₂O₃ or more. Export enquiries may quote SK 40 for this grade; we match SK codes by alumina content.
Where is HA-90 commonly used?
HA-90 is typically specified for blast furnace hearth. Applications across the high alumina bricks range also include steel ladles & torpedo cars, cement rotary kiln burning zone & ladles, glass tank regenerator chambers and blast furnace bosh & belly. Send us your operating conditions and we will confirm the grade.
What shapes and sizes are available for HA-90?
The standard brick is 230 × 115 × 75 mm. We also supply straight, wedge, arch, end arch, side arch, circular, skew and split shapes, and special shapes to drawing. Send the drawing and quantity for a quotation.
How do I select between HA-80 and HA-90?
HA-80: 78-82% Al₂O₃, rated to 1600°C. HA-90: 88-92% Al₂O₃, rated to 1600°C. Higher alumina generally brings higher refractoriness and slag resistance. Send us your application and operating temperature and we will confirm the grade.
Can you supply custom shapes as per drawing?
Yes. Arch, wedge, skew and special shapes are available against drawing, sample or requirement. Send the drawing, dimensions and quantity through the quote form, WhatsApp or +91 98999 57888.
Need HA-90, or unsure between HA-80 and HA-90?
Send us your application, operating temperature, dimensions and quantity. Our refractory team will recommend the suitable grade and supply route.
Technical support
Grade selection from our refractory team
Manufacturer-backed
Supplied from established refractory makers
Pan-India & export
Supply across India, GCC, ASEAN and Africa
Other High Alumina Bricks Grades
All grades in the high alumina bricks range.
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.
HA-90 High Alumina Bricks
88-92% · 70 MPa