REFRACTORIES FOR HEAT TREATING

INDUSTRIAL CERAMICSSAINT-GOBAIN

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Saint-Gobain Industrial Ceramics (SGIC) produces high-per-

formance refractories that stand up to the demands of tough

heat treating applications. At temperatures where other prod-

ucts warp, craze and crack, our products are engineered to

maintain dimensional integrity.

SGIC manufactures a variety of products specifically for

annealing specialty steels and for sintering powdered metal or

carbon/graphite parts. Our refractories are engineered for

longer life, dimensional stability, and chemical compatibility.

We understand that our refractories are an integral part of

your day-to-day operation and that you need maximum

performance with minimal variability. Our marketing team is

a unique combination of engineers and materials scientists

who will work with you to design, engineer and deliver the

high performance refractories you require.

Saint-Gobain Industrial CeramicsRefractories for Heat Treating Applications

At our Northboro and Worcester, Massachusetts R&D

facilities, we engineer advanced materials and products as

well as provide solutions to customers’ applications. For

example, salt and pepper kiln furniture (alumina and (SiC))

and mullite coatings for SiC were developed for applications

where chemical compatibility and purity were concerns.

In addition to our engineering services, we can provide

a range of R&D capabilities which include:

R & D capabilities include:

■ Localized chemistry and microscopy with a scanning

electron microscope (SEM)

■ X-ray diffraction for phase analysis

■ X-ray radiography for non-destructive evaluation

■ Wet chemistry

■ Mechanical testing at room and high temperatures

■ Creep, tension and compression measurements

■ Carbon, nitrogen and oxygen analysis

■ Particle size analysis

■ Oxide firing capabilities to 1700˚ C

■ Atmosphere firing to 2100˚ C

■ Finite element analysis (computer modeling)

Products backed by superiorresearch and engineering

Cover Photography courtesy of:

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Alundum® and Alfrax® high-purity alumina brick offer

exceptional purity required in atmosphere furnaces.

SiC muffles are a high performance, low

cost alternative to alloy muffles. SiC

provides excellent thermal conductivity

and good corrosion, thermal shock and

wear resistance.

High purity alumina muffles provides

exceptional purity required in atmosphere

furnaces; they have good hot strength

and wear resistance.

Hearth plates

Muffles

BrickSiC plates provide superior oxidation resistance,

wear resistance, thermal efficiency and strength.

Alumina and Mullite plates provide good strength

and purity in atmosphere furnaces where chemical

compatibility is important.

For more information, please fax

or mail the enclosed fact sheet,

visit our website or call your

SGIC application engineer.

Tel: 508-795-2195 • Fax: 508-795-5011Website: www.nortonrefractories.com

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SiC and Alumina kiln furniture enhance productivity in

demanding applications. They deliver thermal shock

resistance, chemical compatibility,

creep resistance, oxidation resist-

ance and dimensional stability.

Crystar® RB and Silit SK® SiC radiant tubes provide greatercorrosion and temperature resistance than alloys. SGIC is the first manufacturer in the U.S. to produce these gas-tight tubes.

SiC beams offer excellentstrength and oxidationresistance. Saint-Gobain is the leader in engineeringLO-MASS® SiC designsused to increase settingspace in load-bearingapplications.

Radiant Tubes®

Kiln furniture(e.g., setters, saggers, pusher plates, batts, “boats”)

Beams

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Hearth Plates Muffles Brick, Block, ShapesAlundum®/Mullfrax®/Mulnorite Alundum Dense High Purity Alundum/Mullfrax/MulnoriteAlundum Dense High Purity Cryston/Refrax Alundum Dense High PurityCrystolon® Carbofrax® Alundum Insulating High PurityCryston®/Refrax® Crystar/Advancer®/Crystar RB/Silit SK® Alfrax® Insulating High Purity

Radiant Tubes Kiln Furniture BeamsCrystar® RB/Silit SK Alundum/Mullfrax/Mulnorite Crystar/Advancer/Crystar RB/Silit SK/

Crystolon Hexoloy®

Cryston/RefraxCrystar/Advancer/Crystar RB/Silit SK

Product Availability

Features and Benefits

Alundum/Mullfrax/Mulnorite

Excellent thermal shock resistanceGood creep resistanceChemically compatible with most products

99.55% AluminaExcellent strength at temperatureWear resistanceGood thermal shock resistance compared

to other high Alumina refractories

Superior creep resistanceSuperior strengthSuperior oxidation resistanceSuperior thermal conductivity

DryGood oxidation resistanceGood thermal conductivity, creep

resistance, and wear resistance

DryExcellent oxidation resistanceExcellent thermal conductivity, creep

resistance, and wear resistance

DryGood oxidation resistanceGood thermal conductivityGood creep and wear resistance

99.2% AluminaLight weight, low heat capacity, low

permeability, minimal reheat change

99.8% AluminaStrongest high-purity bubble brick on

the market

Can be used in fast-fire furnacesExcellent dimensional stability throughout the life of the productCan be used in most applications without setting sands/wash

Minimal fall-out*, even in dry hydrogen at elevated temperaturesLong-term creep resistanceLong life in abrasive applicationsCan be used as hearth plates and kiln furniture

Negligible fall-out*, even in dry hydrogen at elevated temperaturesCan be used as hot face refractory

Negligible fall-out* in dry hydrogen below 2300°FExcellent insulating properties for hydrogen atmosphere furnaces

Will not glaze while in serviceIncreased life, even in oxidizing atmospheresCan be used in fast cycle pusher or roller hearth kilnsExcellent material for hearth plates

Will not glaze while in serviceExcellent life, even in oxidizing atmospheresCan be used in fast cycle pusher or roller hearth kilns and is an

excellent material for muffle sections and hearth plates

Thinner cross sections increase available space and decrease kiln furniture mass

Superior life in oxidizing atmospheresSuperior thermal shock resistanceImproved furnace efficiency

Will not glaze while in serviceIncreased life, even in oxidizing atmospheresCan be used as a muffle in fast-cycle pusher or belt furnaces

Product Features Benefits

* Recondensing of impurities which were reduced and volatilized in the hot chamber.

Crystar/Advancer/Crystar RB/Silit SK/Hexoloy

Carbofrax

Cryston/Refrax

Crystolon

Alfrax Insulating High Purity

Alundum Insulating High Purity

Alundum Dense High Purity

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Saint-Gobain Industrial Ceramics makes high-performance refractories to meet virtually any industrial need.For detailed information about products that address specific industry concerns, please contact us at 508-795-2195.

Fax: 508-795-5011 • Website: www.nortonrefractories.com

Saint-Gobain Industrial Ceramics, Inc. • 1 New Bond Street • P.O. Box 15136 • Worcester, MA 01615-0136

INDUSTRIAL CERAMICSSAINT-GOBAIN

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