AL-28 Fireclay Bricks

AL-28 is the 26-30% Al₂O₃ grade in Shanker Agencies’ fireclay bricks range.

26-30%Al₂O₃ content
20 MPaCold crushing strength
2.5%Fe₂O₃ content
24-28%Apparent porosity

AL-28 Technical Specification

Property	Value
Al₂O₃ content	26-30%
Fe₂O₃ content	2.5%
Apparent porosity	24-28%
Cold crushing strength	20 MPa
Standard Size	230 × 115 × 75 mm

Typical values for AL-28 fireclay bricks. Test methods vary by property and product family, so confirm the applicable standard against the manufacturer datasheet before specifying.

Technical Data Sheet

Chemical analysis, physical properties, test methods and available sizes for AL-28 Fireclay Bricks, shared on request.

Request Data Sheet

Where AL-28 Is Used

Typical applications for AL-28 fireclay bricks.

Boilers: refractory application — Boilers
Boiler back walls & settings

Industrial Furnaces: refractory application — Industrial Furnaces
General industrial furnace linings

Kilns: refractory application — Kilns
Kiln car superstructures

Incinerators: refractory application — Incinerators
Waste incinerator linings

Backup Linings: refractory application — Backup Linings
Backup linings behind working lining

Soaking Pits: refractory application — Soaking Pits
Soaking pit walls

Illustrative plant photos via Wikimedia Commons (CC BY / CC BY-SA / public domain). Photo credits

Compare AL-28 with Other Grades

AL-28 against the other 4 grades in the fireclay bricks range.

Swipe table to see all columns

Grade	Al₂O₃ content	Fe₂O₃ content	Apparent porosity	Cold crushing strength
AL-28this grade	26-30%	2.5%	24-28%	20 MPa
AL-30	28-30%	2.5%	22-26%	25 MPa
AL-32	30-34%	2.0%	22-26%	28 MPa
AL-35	35% (nominal)	2.5% max	22-25%	25-29 MPa
AL-40	40% min	3.0% max	23% max	30 MPa min

AL-30

Technical Resources

Standard SK steps with the SAPL grade that meets or exceeds each one. Grades are matched at or above the minimum alumina for the step, so an SK enquiry is never answered with an under-spec material.

SK grade	Min Al₂O₃	Cone equivalent	SAPL fireclay bricks
SK 30	30% Al₂O₃	1670°C	AL-32
SK 32	32% Al₂O₃	1710°C	AL-32
SK 34	38% Al₂O₃	1750°C	AL-40
SK 35	45% Al₂O₃	1770°C	Enquire
SK 36	55% Al₂O₃	1790°C	Enquire
SK 37	65% Al₂O₃	1820°C	Enquire
SK 38	70% Al₂O₃	1850°C	Enquire
SK 40	82% Al₂O₃	1920°C	Enquire

Why Buy from Shanker Agencies?

More than 45 years of experience supplying refractory solutions to industries across India and worldwide.

45+ Years

Refractory experience since 1980

Technical Selection

Application-based grade guidance

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From established refractory manufacturers

Documentation

Technical data available on request

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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.

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Send the drawing, dimensions, application and quantity for AL-28 fireclay bricks. Our technical team reviews the requirement and advises on grade and fulfilment route.

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