01Material selection guide
Select ceramic fiber grade, product form, density and thickness from the operating temperature, atmosphere, cycle and installation conditions.
02Overview
Temperature grade is only one part of the product specification. Product form, normal and peak temperature, atmosphere, cycling, available thickness, handling and mechanical loading must also be specified.
03Technical information
Do not select ceramic fiber from the highest temperature number alone. Begin with the material form and exact lining position, then consider normal and peak temperature, atmosphere, cycling, available thickness, density, handling and mechanical exposure.
Available grades are 1260, 1400, 1500, 1600, 1700, 1800 and 1900. The available density, dimensions and property values still depend on whether the product is board, blanket, paper, a module, a formed part or an engineered chamber.
Density is connected to product construction and grade. It can influence handling, compression, machining and the way a part fits the application, so the same density should not be copied automatically across board, blanket, paper and formed components.
Temperature grade alone cannot account for insulation thickness, atmosphere, cycling, direct heat exposure or mechanical loading. These conditions must be specified for the exact lining position.
04Selection table
Use the operating conditions and installation position to narrow the product. Property values in the final quotation apply to the stated product form and grade.
| Variable | What to provide | Why it matters | Common mistake |
|---|---|---|---|
| Product form | Board, blanket, paper, module, formed shape or chamber | Defines construction and available processing | Choosing grade before choosing the function |
| Temperature | Normal, peak and location within the lining | Sets the thermal selection boundary | Using only the furnace controller set point |
| Atmosphere and cycling | Gas environment, ramp, hold and cycle frequency | Changes material exposure and selection | Assuming all furnace conditions are equivalent |
| Density | Required value or performance reason | Relates to handling, compression and product construction | Applying one density to every grade and form |
| Thickness and geometry | Available space and required dimensions | Defines the insulation build and heat path | Treating thickness as a purchasing detail only |
| Mechanical exposure | Load, abrasion, movement, machining or compression | May change form, density and surface treatment | Selecting only by temperature |
05Product selection steps
The quotation should state the product form, operating conditions, grade, density and finished dimensions.
Define the layer or component and choose the likely material form.
State normal and peak temperature, atmosphere, cycling and direct exposure.
Confirm thickness, dimensions, density, compression, machining and interfaces.
Attach the product data sheet, quoted specification and drawing revision that match the selected form and grade.
08Technical FAQ
SYNTHE offers 1260, 1400, 1500, 1600, 1700, 1800 and 1900 grades across applicable product forms.
The maximum service temperature for 1900-grade material is up to 1800°C, subject to product form, atmosphere and operating conditions.
No. Density must be considered with product form, grade, thickness, handling, compression and mechanical exposure. The highest density is not automatically the best selection.
Yes. Special density is available where the product form, geometry and application allow it.
10Specification support
Provide continuous and peak temperature, atmosphere, mechanical loading, exposed surface and product form so SYNTHE can select grade and density as one insulation system.
