---
title: "ASTM D2444"
url: "https://mat-cs.com/astm-d2444/"
description: "This practice covers the determination of the impact resistance of thermoplastic pipe and fittings under specified conditions of impact by means of a tup (falling weight)."
---

ASTM Standard

# ASTM D2444

Standard Practice for Determination of the Impact Resistance of Thermoplastic Pipe and Fittings by Means of a Tup (Falling Weight)

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## Significance and Use

4.1 The impact resistance of thermoplastic pipe and fittings relates to suitability for service and to quality of processing. Impact resistance may also provide a relative measure of a material’s resistance to breakage during handling and installation and, for non-buried applications, to in-service breakage. See Appendix X5 for guidelines for selecting testing combinations.

4.2 Results obtained by use of this practice can be used in three ways:

4.2.1 As the basis for establishing impact test requirements in product standards,

4.2.2 To measure the effect of changes in materials or processing, and

4.2.3 To measure the effect of the environment.

## Scope

1.1 This practice covers the determination of the impact resistance of thermoplastic pipe and fittings under specified conditions of impact by means of a tup (falling weight). Three interchangeable striking noses are used on the tup, differing in geometrical configuration. Two specimen holders are described.

Note 1: Appendix X1 shows the procedure to determine impact strength.

1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.