ASTM C203-22
Standard Test Methods for Breaking Load and Flexural Properties of Block-Type Thermal Insulation

Standard No.

ASTM C203-22

Release Date

2022

Published By

American Society for Testing and Materials (ASTM)

Latest

ASTM C203-22

Scope

1.1 These test methods cover the determination of the breaking load and calculated flexural strength of a rectangular cross section of a preformed block-type thermal insulation tested as a simple beam. It is also applicable to cellular plastics. Two test methods are described as follows: 1.1.1 Test Method I—A loading system utilizing center loading on a simply supported beam, supported at both ends. 1.1.2 Test Method II—A loading system utilizing two symmetric load points equally spaced from their adjacent support points at each end with a distance between load points of one half of the support span. 1.2 Either test method is capable of being used with the four procedures that follow: 1.2.1 Procedure A—Designed principally for materials that break at comparatively small deflections. 1.2.2 Procedure B—Designed particularly for those materials that undergo large deflections during testing. 1.2.3 Procedure C—Designed for measuring at a constant stress rate, using a CRL (constant rate of loading) machine. Used for breaking load measurements only. 1.2.4 Procedure D—Designed for measurements at a constant crosshead speed, using either a CRT (constant rate of traverse) or CRE (constant rate of extension) machine. Used for breaking load measurements using a fixed crosshead speed machine. 1.3 Comparative tests are capable of being run according to either method or procedure, provided that the method or procedure is found satisfactory for the material being tested. 1.4 These test methods are purposely general in order to accommodate the widely varying industry practices. It is important that the user consult the appropriate materials specification for any specific detailed requirements regarding these test methods. 1.5 The values stated in SI units are to be regarded as the standard. The values given in parentheses are provided for information only. 1.6 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. For specific precautionary statements, see Section 10 1.7 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.

ASTM C203-22 Referenced Document

• ASTM C133 Standard Test Methods for Cold Crushing Strength and Modulus of Rupture of Refractories*， 2024-04-22 Update
• ASTM C168 Standard Terminology Relating to Thermal Insulation
• ASTM C390 Standard Criteria for Sampling and Acceptance of Preformed Thermal Insulation Lots
• ASTM C870 Standard Practice for Conditioning of Thermal Insulating Materials
• ASTM D76 Standard Specification for Tensile Testing Machines for Textiles
• ASTM E4 Standard Practices for Force Verification of Testing Machines

ASTM C203-22 history

• 2022 ASTM C203-22 Standard Test Methods for Breaking Load and Flexural Properties of Block-Type Thermal Insulation
• 2005 ASTM C203-05a(2017) Standard Test Methods for Breaking Load and Flexural Properties of Block-Type Thermal Insulation
• 2005 ASTM C203-05a(2012) Standard Test Methods for Breaking Load and Flexural Properties of Block-Type Thermal Insulation
• 2005 ASTM C203-05a Standard Test Methods for Breaking Load and Flexural Properties of Block-Type Thermal Insulation
• 2005 ASTM C203-05 Standard Test Methods for Breaking Load and Flexural Properties of Block-Type Thermal Insulation
• 1999 ASTM C203-99 Standard Test Methods for Breaking Load and Flexural Properties of Block-Type Thermal Insulation