HA-60 · Al₂O₃ ≥ 60% · 1500 °C
60% High-Alumina Refractory Bricks
Supplier and exporter from Rajkot, India. The most-specified grade in our high-alumina range — balanced cost-to-performance for cement transition zones and steel preheating furnaces.
- Al₂O₃≥ 60%
- Max temp1500 °C
- Bulk density≥ 2.30 g/cm³
- CCS≥ 45 MPa
- Standard size230 × 114 × 65 mm
- MOQ5 – 10 MT
About this product
What 60% high-alumina bricks are — and where they fit
60% high-alumina refractory bricks are fired refractory products with a minimum 60% Al₂O₃ (aluminium oxide) content, balanced against SiO₂ and minor oxides. They are manufactured from selected bauxite and high-alumina aggregates, fired to dense ceramic bodies at controlled kiln temperatures. The grade sits in the middle of the high-alumina range — above fireclay and 45% alumina, below 70% and corundum.
The 60% grade exists because it solves a specific procurement problem: it delivers most of the high-temperature performance of premium alumina bricks at a substantially lower cost. With a refractoriness under load (RUL T₀.₅) above 1400 °C, cold crushing strength above 45 MPa and apparent porosity under 22%, it withstands the combined thermal, mechanical and chemical loads found in cement kiln transition zones, steel preheating furnaces, ceramic kiln roofs and ladle back-up linings. It outperforms fireclay bricks in service life by a wide margin where slag attack and load-bearing temperature are the limiting factors.
Compared to fireclay bricks, the 60% grade gives roughly 200 °C of additional service temperature and noticeably better slag resistance. Compared to 70% alumina, it sacrifices about 100 °C of peak temperature and some abrasion resistance — but at materially lower per-tonne cost, which makes it the default choice for buyers replacing fireclay linings without moving into premium-grade economics.
firebrickssource.com supplies the 60% grade in the standard 230 × 114 × 65 mm size, plus arch and wedge variants, taper bricks and custom precast shapes to drawing. Standard chemistry is BIS / IS-aligned; minor adjustments to the SiO₂ / Al₂O₃ ratio or matrix grain size are possible on indent orders. The grade is regularly exported to cement plants in the Middle East and Southeast Asia, and to steel mills in Africa and South Asia.
Technical specifications
Full property data — 60% high-alumina bricks
| Property | Value | Test method |
|---|---|---|
| Al₂O₃ content | ≥ 60 % | IS 1528-7 |
| SiO₂ content | ≤ 35 % | IS 1528-7 |
| Fe₂O₃ content | ≤ 2.0 % | IS 1528-7 |
| Apparent porosity | ≤ 22 % | IS 1528-8 / ASTM C20 |
| Bulk density | ≥ 2.30 g/cm³ | IS 1528-12 |
| Cold crushing strength (CCS) | ≥ 45 MPa | IS 1528-4 / ASTM C133 |
| Refractoriness under load (RUL T₀.₅) | ≥ 1400 °C | IS 1528-2 |
| Permanent linear change (1400°C × 2h) | ± 0.5 % | IS 1528-6 |
| Pyrometric cone equivalent (PCE) | ≥ 35 (Orton) | IS 1528-1 |
| Standard size | 230 × 114 × 65 mm | — |
| Custom sizes | Available on request — arch, wedge, taper, precast | — |
Values are typical certified results. Actual values are recorded against each production batch and shipped with the test certificate.
Applications
Where to use 60% high-alumina bricks
- Cement kiln transition zone (back-up)
- Cement kiln nose ring / outlet zone
- Steel plant preheating & reheating furnaces
- Soaking-pit linings (steel)
- Ceramic kiln roof and side walls
- Lime-kiln preheater & calcining zone
- Aluminium melting / holding furnaces
- Glass-furnace regenerator (cold end)
- Ladle back-up lining (steel)
- General-purpose high-temperature lining
Datasheet
Download technical datasheet
PDF with all certified properties, dimensional tolerances and applicable IS / ASTM test methods. Use this for tender attachments and procurement files.
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Frequently asked
HA-60 — questions buyers ask
What is the maximum temperature for 60% high-alumina bricks?
60% high-alumina refractory bricks have a refractoriness under load (RUL T₀.₅) of approximately 1400 °C and a maximum service temperature of around 1500 °C, depending on the specific application, slag exposure and thermal cycling conditions.
What is the difference between fireclay and 60% high-alumina bricks?
Fireclay bricks contain 30 – 46% Al₂O₃ and are used for applications up to about 1300 °C. 60% high-alumina bricks contain ≥ 60% Al₂O₃ and offer superior performance above 1400 °C, with higher load-bearing strength, better thermal-shock resistance and improved slag resistance.
Where are 60% Al₂O₃ refractory bricks used?
Typical applications include cement kiln transition zones, steel-plant preheating and reheating furnaces, ceramic kiln roofs, ladle linings (back-up layer), glass-furnace regenerator chambers and lime kilns.
What is the standard size of 60% alumina bricks?
The standard rectangular size is 230 × 114 × 65 mm. Custom sizes, arch and wedge shapes, taper bricks and precast components are available on request — send a drawing or specification.
What is the typical MOQ for high-alumina refractory bricks?
Standard MOQ is approximately 5 – 10 MT for stocked sizes; custom shapes and chemistries are quoted on a per-project basis. One 20-foot container typically carries 22 – 25 MT of refractory bricks.
What Incoterms are offered for export shipments?
We typically quote FOB Mundra or FOB Kandla. CIF, CFR and EXW are available on request. Sea-freight rates are confirmed at the time of booking.
Do you provide samples and test certificates?
Yes. Samples can be dispatched on request — normally chargeable plus courier. Every production batch is tested for apparent porosity, bulk density, cold crushing strength and refractoriness; a test certificate ships with each consignment.
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