Shaped Refractories / Fireclay Bricks

STD-28 Fireclay Bricks

STD-28 is the 26-30% Al₂O₃ grade in Shanker Agencies’ fireclay bricks range, rated for continuous service to 1250°C.

Also known asSTD-2828% alumina

Request STD-28 Quote Call +91 98999 57888

Grade

STD-28

Al₂O₃ content

26-30%

Max service temperature

1250°C

Cold crushing strength

20 MPa

STD-28 technical specification

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

Al₂O₃ content

26-30%

Fe₂O₃ content

2.5%

Apparent porosity

24-28%

Cold crushing strength

20 MPa

Max service temperature

1250°C

Where STD-28 is used

Boiler back walls & settingsGeneral industrial furnace liningsKiln car superstructuresWaste incinerator liningsBackup linings behind working liningSoaking pit walls

Is STD-28 right for your application?

Rated for continuous service up to 1250°C.

Compare STD-28 with other grades▾

Compare STD-28 against every grade SAPL stocks in this family.

Swipe to compare grades

Grade	Al₂O₃ content	Fe₂O₃ content	Apparent porosity	Cold crushing strength	Max service temperature
STD-30	28-30%	2.5%	22-26%	25 MPa	1300°C
STD-40	38-42%	2.0%	20-24%	35 MPa	1400°C
STD-28this grade	26-30%	2.5%	24-28%	20 MPa	1250°C
STD-32	30-34%	2.0%	22-26%	28 MPa	1300°C
STD-36	34-38%	2.0%	20-24%	32 MPa	1350°C

← STD-40 STD-32 →

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

Request STD-28 Quote

Grade designations & equivalents▾

How STD-28 is referenced across Indian and export naming conventions.

SAPL grade code	STD-28
Indian trade names	28% alumina
Alumina content	26-30% Al₂O₃
Max service temperature	1250°C

SK series to fireclay bricks reference▾

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	STD-32
SK 32	32% Al₂O₃	1710°C	STD-32
SK 34	38% Al₂O₃	1750°C	STD-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

Installation notes

1Use fireclay mortar of matching composition for jointing
2Keep joint width between 2–4 mm
3Dry-out at 25°C/hr up to 120°C, hold 8 hrs minimum before heating to operating temp
4Suitable for both straight and arch courses, wedge bricks available on request

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.