AL-32 Fireclay Bricks

AL-32 is the 30-34% Al₂O₃ grade in Shanker Agencies’ fireclay bricks range.

30-34%Al₂O₃ content
28 MPaCold crushing strength
2.0%Fe₂O₃ content
22-26%Apparent porosity

AL-32 Technical Specification

Property	Value
Al₂O₃ content	30-34%
Fe₂O₃ content	2.0%
Apparent porosity	22-26%
Cold crushing strength	28 MPa
Standard Size	230 × 115 × 75 mm

Typical values for AL-32 fireclay bricks. Test methods vary by property and product family, so confirm the applicable standard against the manufacturer datasheet before specifying.

Is AL-32 right for your application?

Also meets SK 30 requirements. Those are lower duties, so a lighter grade may be the more economical choice.

Technical Data Sheet

Chemical analysis, physical properties, test methods and available sizes for AL-32 Fireclay Bricks, shared on request.

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Where AL-32 Is Used

Typical applications for AL-32 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-32 with Other Grades

AL-32 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-28	26-30%	2.5%	24-28%	20 MPa
AL-30	28-30%	2.5%	22-26%	25 MPa
AL-32this grade	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 AL-35

Technical Resources

How AL-32 is referenced across Indian and export naming conventions.

SAPL grade code	AL-32
Indian trade names	32% alumina
Export SK equivalentNearest SK step, minimum 32% Al₂O₃	SK 32
Also meetsExceeds these requirements, a lower grade may suit those duties	SK 30
Alumina content	30-34% Al₂O₃

Reading an SK code correctly. SK (Seger Kegel) is a cone designation, and each step carries an accepted minimum Al₂O₃ content in trade practice. The dependable way to match an SK enquiry to a grade is that minimum alumina figure, which is how the equivalence above is derived. Note that a brick’s measured PCE and its SK trade grade are two different numbers and will not always agree. Suppliers also differ at the margins, most often around SK 34. When comparing offers, check Al₂O₃ and PCE together rather than the SK code alone.

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-32this grade
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.

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Refractory experience since 1980

Technical Selection

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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.

Need AL-32 or help choosing a grade?

Send the drawing, dimensions, application and quantity for AL-32 fireclay bricks. Our technical team reviews the requirement and advises on grade and fulfilment route.

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