Shaped Refractories / Fireclay Bricks

STD-30 Fireclay Bricks

STD-30 is the 28-30% Al₂O₃ grade in Shanker Agencies’ fireclay bricks range, rated for continuous service to 1300°C.

Also known asSTD-3030% alumina

Request STD-30 Quote Call +91 98999 57888

Grade

STD-30

Al₂O₃ content

28-30%

Max service temperature

1300°C

Cold crushing strength

25 MPa

STD-30 technical specification

Typical values for STD-30 fireclay bricks. Test methods vary by property and product family, so confirm the applicable standard against the manufacturer datasheet before specifying.

Property	STD-30
Al₂O₃ content	28-30%
Fe₂O₃ content	2.5%
Apparent porosity	22-26%
Cold crushing strength	25 MPa
Max service temperature	1300°C

Grade designations and equivalents

How STD-30 is referenced across Indian and export naming conventions.

SAPL grade code	STD-30
Indian trade names	30% alumina
Alumina content	28-30% Al₂O₃
Max service temperature	1300°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	HFK-32
SK 32	32% Al₂O₃	1710°C	HFK-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

Where STD-30 is used

Boiler back walls & settings

General industrial furnace linings

Kiln car superstructures

Waste incinerator linings

Backup linings behind working lining

Soaking pit walls

Full fireclay bricks range

Compare STD-30 against every grade SAPL stocks in this family.

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
HFK-28	26-30%	2.5%	24-28%	20 MPa	1250°C
HFK-32	30-34%	2.0%	22-26%	28 MPa	1300°C
HFK-36	34-38%	2.0%	20-24%	32 MPa	1350°C

STD-40 →

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.