This standard is issued under the fixed designation C ; the number immediately 1 This specification is under the jurisdiction of ASTM Committee C on. ASTM C Standard Specification for High-Temperature Fiber Blanket Thermal Insulation. ASTM C Standard Specification for High-Temperature Fiber Blanket Thermal Insulation. standard by ASTM International, 05/01/ This document has.

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Add to Alert PDF. The liquid binder consists of a mixture of both organic and inorganic colloidal silica materials, and is typically added in sufficient quantity to provide the fibers with necessary adhesion to the applied surface; cohesion to one another; and the required physical properties of the installed, dry insulation.

It should be noted that not all manufacturers of high-temperature fiber products utilize the ASTM C standard for their products. To meet quality standards, these materials must retain the same properties consistently from production batch to production batch.

What Is Average? – Insulation Outlook

Follow Us On Twitter http: The materials appear to be simple but are highly engineered to optimize different properties, such as thermal performance, high-temperature performance, compressive strength, rigidity or flexibility, water repellence, flame spread prevention, inhibition of metal surface corrosion, and various health and safety considerations.

By contrast, test method ASTM C takes much smaller increments of temperature adtm represents the mean temperature as the average of those narrow increments. Their business histories over the first 11 years show striking similarities—and differences: The liquid binder astn made from inorganic materials: C lists thermal conductivity values in two sections, one as determined by C, and the other by C The values given in parentheses are mathematical conversions to SI units which are provided for information only and are not considered standard.


The C method was originally developed for rigid, higher density refractory materials with thermal conductivity values 3 to 10 times greater than those for typical thermal insulation materials.

Each different type of material is designed to perform in particular applications over a particular temperature range. The pins and wire mesh ensure the insulation material is firmly applied and will resist the effects of vibration and external forces.

The pneumatically applied product is separated into three types based on the chemistry and upper use temperature use limit: If the thermal conductivity-mean temperature relationship is linear, or nearly linear, this approach will suffice. Design limitations in the C apparatus limit the ability to make thermal performance determinations over the lower half of the C temperature range. This abstract is a brief summary of the referenced standard. This standard is not included in any packages.

It would be important to design a coordinated program to harmonize data by the two methods in the overlapping temperature range. High-temperature fiber insulations are fibrous insulations, varying xstm flexibility, density, and composition, with or without binders.

What Is Average?

Please first log in with a verified email before subscribing to alerts. Conclusions and Recommendations Material and test standards for thermal insulation materials provide valuable support to specifiers, designers, and users working with high-temperature products.

The different approaches illustrate that the average thermal conductivity value over a large temperature range, in general, can be significantly different from the thermal conductivity value at the average temperature of that range. Here is f892 example: The C values range from 33 percent greater to 1 percent lower, depending on the mean temperature.


The composition can be described as follows: The user shall establish appropriate safety and health practices and determine the applicability of regulatory requirements xstm to use.

Additionally, they often must be made in a form that is relatively easy to install so as to be economical in their final application. Thermal insulation materials are commercially available in a variety of forms, shapes, and sizes, including blankets, boards, loose fill, pre-formed pipe, rigid foams, flexible foams, and spray foams.

It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. Definition Difference With ASTM C, the measured thermal conductivity value associated with a specific temperature is the actual value of thermal conductivity at that mean temperature—i.

Definition Difference—The thermal conductivity value listed by C is defined differently than that for C, so one should not expect to find the same values listed. Understanding the methods used as the basis for different standards can help users choose their reference points appropriately. Why do the different thermal test procedures offer two different sets of results asmt the same material, tested at the same mean temperature?