ASTM E228 PDF

More E The appendix contains information relating to reference materials in current general use. Neglecting proper and accurate temperature measurement will inevitably result in increased uncertainties in the final data. Scope 1. This method is applicable over any practical temperature range where a device can be constructed to satisfy the performance requirements set forth in this standard.

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This method is applicable over any practical temperature range where a device can be constructed to satisfy the performance requirements set forth in this standard. Note 1 Initially, this method was developed for vitreous silica dilatometers operating over a temperature range of to ;C. The concepts and principles have been amply documented in the literature to be equally applicable for operating at higher temperatures.

The precision and bias of these systems is believed to be of the same order as that for silica systems up to ;C. However, their precision and bias have not yet been established over the relevant total range of temperature due to the lack of well-characterized reference materials and the need for interlaboratory comparisons.

This includes, as examples, metals, ceramics, refractories, glasses, rocks and minerals, graphites, plastics, cements, cured mortars, woods, and a variety of composites. It is generally applicable to materials having absolute linear expansion coefficients exceeding 0. In such cases, a sufficiently long specimen was found to meet the specification. Users of the test method are expressly advised that all such instruments or techniques may not be equivalent and may omit or deviate from the methodology described hereunder.

It is the responsibility of the user to determine the necessary equivalency prior to use. This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

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ASTM E228 – Linear Thermal Expansion of Solid Materials with a Push-Rod Dilatometer

Full Description 1. This method is applicable over any practical temperature range where a device can be constructed to satisfy the performance requirements set forth in this standard. The concepts and principles have been amply documented in the literature to be equally applicable for operating at higher temperatures. However, their precision and bias have not yet been established over the relevant total range of temperature due to the lack of well-characterized reference materials and the need for interlaboratory comparisons. This includes, as examples, metals, ceramics, refractories, glasses, rocks and minerals, graphites, plastics, cements, cured mortars, woods, and a variety of composites.

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This method is applicable over any practical temperature range where a device can be constructed to satisfy the performance requirements set forth in this standard. Note 1 Initially, this method was developed for vitreous silica dilatometers operating over a temperature range of to ;C. The concepts and principles have been amply documented in the literature to be equally applicable for operating at higher temperatures. The precision and bias of these systems is believed to be of the same order as that for silica systems up to ;C.

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More E Scope 1. However, their precision and bias have not yet been established over the relevant total range of temperature due to the lack of well-characterized reference materials and the need for interlaboratory comparisons. This includes metals, ceramics, refractories, glasses, rocks and minerals, graphites, plastics, cements, mortars, woods, and fiber, and other reinforced matrix composites. Since a general test method cannot cover all specific requirements, details of this nature should be contained in the relevant material specification. Users of the test method are expressly advised that all such instruments or techniques may not be equivalent. It is the responsibility of the user to determine the necessary equivalency prior to use.

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