Pyroceramic Glass specifications for high temperature wood stove and fireplace glass.

Here are our Pyroceramic Glass specifications

1380°  Wood Stove Glass Made in Quincy ILL. USA

We make Pyroceramic glass right here in America, in Quincy Il. Our Ceramic wood stove glass comes in 1/8 or 3/16" thickness and is commercial grade. It is available in a variety of cuts and patterns. This OEM replacement glass is ideal for any wood, gas, pellet, or coal stove. Also great for burning with your masonry fireplace glass doors completely closed! Properly installed and maintained, this glass will last for years.  We seam all of the glass edges so it is not sharp.  And our quick shipping of your order is 2nd to none.  All orders ship within 24-48 hrs Monday through Friday.  We also do large pieces that most others wont!  

Pyroceram glass is a type of high temperature glass similar to Neoceramic, Pyrex, and Robax glass.   We feel that Pyroceram is a superior ceramic glass product.   Invented in the 1950's by Corning®  to be a consistent transparent crystaline glass that resisted shattering for high heat applications. Pyroceram wood stove glass has a thermal shock rating of 1380° F . We recommend that a non-combustible gasket is used in all applications if possible.  

 Pyroceramic glass specifications.

1. USE OF GLASS CERAMIC HEARTH WINDOWS The specification definition

 The physical and performance characteristics of PYROCERAM III Brand Clear Glass Ceramic and CLEARVIEW PLUS Coated PYROCERAM III for wood, coal, pellet, and gas stoves. A separate product specification will exist for every product code which defines the nominal dimensions and tolerances for that item. The product specification will take precedence over this specification if a discrepancy exists.

2. PHYSICAL PROPERTIES OF Pyroceramic Glass The physical and chemical properties of EuroKera Pyroceramic Glass sheets are checked in our laboratories in accordance with relevant DIN, NF, ISO or EN specifications or additional proprietary specifications if necessary. Nevertheless, slight variations from the figures given in this section remain possible but will not affect the capacity of the product.

   2.1 THERMAL PROPERTIES Thermal endurance: The clear pyroceramic glass was unchanged after being subjected to the following conditions: Continuous use at 700°C Time limited peak use at 800°C Coefficient of expansion (20° to 700°C) 0 ± 3.0 x 10-7 K -1 Mean specific heat (20° to 100°C) 0.8 (J/g. K) Resistance to thermal gradients T max. = 700K Thermal shock resistance T max. = 700K

   2.2 MECHANICAL PROPERTIES Specific mass 2.55 Young's Elasticity modulus (E=) 94.3 (GPa) Torsion modulus (G=) 37.8 (GPa) Poisson ratio ì 0.25 Minimal bending strength > 110 (MPa) Knoop hardness (load 1 N) 705

   2.3 OPTICAL PROPERTIES Refractive Index 1.55 (Approx.) ABBE Number 55.4 (Approx.) UV Transmission for 3mm thickness < 1% (Wavelength < 355 ìm) Photo elastic coefficient 3.11 (Brewster) The color of the Pyroceramic Glass is transparent to visible light with a slight amber tint. TRANSMISSION CURVE (MULTIPLE THICKNESSES) ILLUSTRATION #1

   2.4 ELECTRICAL PROPERTIES Electrical resistivity (where ñ is in (ohm • cm)) log10 ñ 6.8 at 250° C log10 ñ 5.4 at 350° C log10 ñ 2.7 at 700° C (Estimated) Dielectric constant 8.1 at 102 Hz 7.5 at 104 Hz 7.3 at 106 Hz Dissipation factor 40 x 10-3 at 102 Hz 17 x 10-3 at 104 Hz 12 x 10-3 at 106 Hz 2.5 CHEMICAL PROPERTIES Water resistance (ISO 719) : Class 1 Acid resistance (DIN 12 116) : Class 1 Alkali resistance (ISO 695) : Class 1

3. VISUAL AND SURFACE APPEARANCE The parts cut to the client’s dimensions are divided into 2 areas according to the condition of use. The first part is the central area which is visible in the finished appliance. The second part is the peripheral area which is hidden by the frame in the finished appliance. The Pyroceramic Glass appearance criteria is evaluated from 1.0 meter away, held vertical in front of a light source corresponding to the same level of brightness as in the practical use of the product. The defects that cannot be measured are estimated by comparison with limit samples. The limit sample is the maximum permissible level of imperfection.


 More on our Pyroceramic Glass specifications

    3.1 CENTRAL AREA APPEARANCE CRITERIA

   3.1.1 GASEOUS INCLUSIONS Description: Bubbles can be located inside the glass ceramic at various depths. They are considered closed as long as they cannot be opened by the pressure from an HB pencil. Criteria: No open inclusion permissible over 1 mm diameter or length Closed inclusion permissible within 1 to 3 mm in diameter or length, not to exceed a maximum density of 0.5/dm2 Closed inclusion permissible from 3 to 5 mm in diameter or length, not to exceed one (1) per window Note: 1 dm = 10 cm = 100 mm; 1 dm2 = 100 cm2 = 10000 mm2

    3.1.2 WAVES/DISTORTION Description: Slight distortions on the surface of the Pyroceramic Glass, visible on the image of a straight line reflected by the glass ceramic. Should not exceed limit sample.

   3.1.3 SOLID INCLUSIONS Description: Foreign particles, usually whitish, at various depths inside the glass ceramic. Criteria: Diameter is defined as the addition of the length and width of the inclusion Diameter less than or equal to 0.5 mm is permissible Diameter greater than 0.5 mm but less than or equal to 1.5 mm will be permissible only if the density does not exceed 0.2/dm2 Diameter greater than 1.5 is not permissible Associated checks are not permissible no matter what the size.

   3.1.4 PITS AND EMBEDDED MATERIAL Description: Small round depressions on the surface which may or may not contain embedded particles. Criteria: Limit samples utilized to determine permissible limits

   3.1.5 SCRATCHES AND SCUFFS Description: Whitish elongated marks on the surface due to abrasion by a hard material. Criteria: Must neither affect the visibility nor make a ridge felt by the fingernail.

   3.1.6 STAINS Description: More or less transparent rings on the glass surface Criteria: Must not affect visibility through the window at 1.0 meter.

   3.1.7 MISCELLANEOUS Description: Other kinds of defects will be estimated by comparison with the most similar defect. Criteria: The addition of several appearance imperfections must not exceed the limit allowed for any one single defect.

   3.2 PERIPHERAL APPEARANCE CRITERIA All other defects such as waves, pits, embedded material, scratches, and stains will not be taken into account.

   3.2.1 GASEOUS INCLUSIONS Description: Bubbles can be located inside the Pyroceramic Glass at various depths. Criteria: No more than 4 opened or closed inclusions in the range of 1 to 5 mm

   3.2.2 SOLID INCLUSIONS Description: Foreign particles, usually whitish, at various depths inside the glass ceramic. Criteria: Diameter is defined as the addition of the length and width of the inclusion No more than 4 inclusions in the range of 0.5 to 1.5 mm

   3.3 GENERAL APPEARANCE CRITERIA

   3.3.1 EDGE QUALITY Description: Superficial chips on the edges Criteria: Chips greater than 4 mm are not permissible Checks with a V-profile greater than 1.6 mm deep and 3.2 mm wide are not permissible

   3.3.2 EDGE CHAMFER Criteria: No sharp edges

4. GEOMETRICAL CHARACTERISTICS As a standard, the Pyroceramic Glass parts are delivered flat, as cut, with a small chamfer on the edges and corners. Upon request, we can study machining of the edges, cutting specific shapes, drilling of holes, decorating with enamels and coating for heat reflection. If there are no special agreements with the customer, the following standard tolerances are applicable in accordance with the Inspection Data Sheet.

   4.1.1 LENGTH and WIDTH Nominal tolerance ± 1.6 mm

   4.1.2 DEFECTS OF ANGLE TOLERANCE d = 0.8 mm max.

   4.1.3 THICKNESS OF THE PANEL Nominal (3, 4 or 5 mm) ± 0.2 mm

   4.1.4 FLATNESS Flatness of a panel is measured along its diagonal on a smooth surface: max. = 0.3 % of the panel diagonal 4.1.5 CORNERS The edges of EuroKera windows are chamfered to improve resistance to mechanical impact Other machining requirements will be reviewed upon request on a case-by-case basis.

5. COATING CHARACTERISTICS 5.1 CLEARVIEW PLUS TM CRITERIA The Clearview PlusTM glass shall have a minimum transmittance of 65% in the visible range

   5.1.1 COLOR, UNIFORMITY AND APPEARANCE The central area shall have a generally un-mottled appearance throughout the window with no rainbow effects. Pin holes: Diameter is defined as the addition of the length and width of the inclusion Diameter greater than 1.0 mm but less than or equal to 4.8 mm will be permissible only if the density does not exceed 0.32/dm2

   5.1.2 COATING LABELING Glass to be identified with “Coated” on the non-coated side of the glass in black ink.

   5.2 IMAGES MIRROR CRITERIA The Images glass shall have a reflective coating as specified in Gold or Silver.

   5.2.1 COLOR, UNIFORMITY AND APPEARANCE The central area shall have a generally un-mottled appearance throughout the window with no rainbow effects. Windows are re-inspected against criteria in Section 3.1. after coating is applied. Pin holes: Diameter is defined as the addition of the length and width of the inclusion Diameter less than 1.0 mm will be permissible only if the density does not exceed 0.32/dm2

    5.2.2 COATING/WINDOW LABELING Glass to be identified with “Coated – Patent Pending” on the non-coated side of the glass in black ink. The patent pending reference is US Patent No. 2006/0024509 A1.

6. DECORATION CHARACTERISTICS

   6.1 DECORATION DURABILITY The decoration must not visibly degrade under the following conditions: Criteria: Heating to 649oC (1200oF) for 24 hours

7. PACKAGING CHARACTERISTICS Packaging and labeling will be provided on each shipping unit to provide product traceablility, prevent glass-to-glass contact and minimize breakage during transit.


Used for chemical process sight glass and high temperature vision windows. We can custom cut it the same day.

Pyro-Ceramic glass is a heat-resistant glass-ceramic that can withstand extremely high temperatures. In reality, it is a clear version of ceramic. Pyro-Ceram was first used to create casserole dishes and saucepans.  Manufacturers have extended the use of Pyro-Ceram to ovens, broilers, heat insulators, missiles and lighting. Pyro-Ceram is no longer used just for dishware. It is also helps in reducing UV light waves.

Manufacturers use a special rating system for evaluating the strength of ceramic glass when shocked by a change in temperature. This rating system is called Thermal Shock Resistance. Pyro-Ceram has a high thermal shock resistance. You could pour cold water on hot Pyro-Ceram, it will not crack or shatter the way standard glass would. Having a high thermal shock resistance rating makes Pyro-Ceram the best choice for replacement glass in items that are exposed to high temperatures.

This is why makes it an excellent choice for fireplaces replacement glass and wood stove replacement glass.



Ready to leave the pyroceram specifications page and place an order - click here

WoodStove-FireplaceGlass.com is located at 600 Jersey St. in Quincy IL. 62301 You can contact us at info@woodstove-fireplaceglass.com or by calling217-242-2524 Specializing in custom pieces of PyroCeram® Ceramic Glass. Copyright ©2013 Woodstove-fireplaceglass.com. All rights reserved


Solo Build It!