ASTM E228 - 17 - Standard Test Method for Linear Thermal Expansion of Solid Materials With a Push-Rod Dilatometer
Essential maintenance work will be carried out on BSI Shop over the weekend of 12 and 13 June 2021. BSI Shop will be operational during this time but you might experience slowness for a very brief period of time. Please accept our apologies for any inconvenience this may cause.

ASTM E228 - 17

Standard Test Method for Linear Thermal Expansion of Solid Materials With a Push-Rod Dilatometer

Status : Current   Published : April 2017



1.1 This test method covers the determination of the linear thermal expansion of rigid solid materials using push-rod dilatometers. 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 –180°C to 900°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 900°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.

1.2 For this purpose, a rigid solid is defined as a material that, at test temperature and under the stresses imposed by instrumentation, has a negligible creep or elastic strain rate, or both, thus insignificantly affecting the precision of thermal-length change measurements. This includes, as examples, metals, ceramics, refractories, glasses, rocks and minerals, graphites, plastics, cements, cured mortars, woods, and a variety of composites.

1.3 The precision of this comparative test method is higher than that of other push-rod dilatometry techniques (for example, Test Method D696) and thermomechanical analysis (for example, Test Method E831) but is significantly lower than that of absolute methods such as interferometry (for example, Test Method E289). It is generally applicable to materials having absolute linear expansion coefficients exceeding 0.5 μm/(m·°C) for a 1000°C range, and under special circumstances can be used for lower expansion materials when special precautions are used to ensure that the produced expansion of the specimen falls within the capabilities of the measuring system. In such cases, a sufficiently long specimen was found to meet the specification.

1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.5 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.

1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

Standard NumberASTM E228 - 17
TitleStandard Test Method for Linear Thermal Expansion of Solid Materials With a Push-Rod Dilatometer
Publication Date01 April 2017
Normative References(Required to achieve compliance to this standard)No other standards are normatively referenced
Informative References(Provided for Information)No other standards are informatively referenced
Descriptors contraction, dilatometer, dilatometry, expansion, expansivity, linear thermal expansion, mean coefficient of thermal expansion, push-rod
File Size140 KB

 Your basket
Your basket is empty

Multi-user access to over 3,500 medical device standards, regulations, expert commentaries and other documents

Worldwide Standards
We can source any standard from anywhere in the world


Access, view and download standards with multiple user access, across multiple sites with BSOL

Tracked Changes

Understand the changes made to a standard with our new Tracked Changes version