GB/T 40919-2021 Active National standards

GB/T 40919-2021 Polyethylene materials for piping systems—Determination of Strain Hardening Modulus in relation to slow crack growth

Publish Date: 2021-11-26 Implement Date: 2022-06-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: GB/T 40919-2021

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Plastic profiles

ICS Name: Plastic pipes, fittings, and valves

Publish Date: 2021-11-26

Implement Date: 2022-06-01

Pages: 13 pages

Scope

This document specifies a method for determining the strain hardening modulus, which is used to evaluate the resistance of polyethylene materials to slow crack growth.
This document provides a method for obtaining the strain hardening modulus by measuring the stress-strain curves of injection-molded specimens. It details the required equipment, accuracy, and sample preparation methods to obtain valid data.
The test method specified in this document is applicable to various polyethylene materials used in pipes and fittings, regardless of the polyethylene production technology or the type of comonomers and catalysts.
Note: This method can also be used for material development for other applications.

Development Information

Word Count: 27 Thousand words Pages: 13 pages

Referenced Standards

ISO 527-1 ISO 7500-1 ISO 9513

Adopt standards

ISO 18488:2015

Related Standards

GB/T 13663-2000 Replaced

GB/T 13663-2000 Polyethylene pipes for water supply

Publish Date: 2000-11-21

GB/T 18251-2000 Replaced

GB/T 18251-2000 Method for the assessment of pigment or carbon black dispersion in polyolefin pipes,fittings and compounds

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GB/T 18252-2000 Replaced

GB/T 18252-2000 Plastics piping and ducting systems—Determination of the long-term hydrostatic strength of thermoplastics materials in pipe form by extrapolation

Publish Date: 2000-11-21

GB/T 18477-2001 Replaced

GB/T 18477-2001 Unplasticized polyvinyl chloride(PVC-U) double wall corrugated pipes for underground soil, waste and drainage

Publish Date: 2001-10-24

GB/T 18742.1-2002 Replaced

GB/T 18742.1-2002 Polypropylene piping systems for hot and cold water installations—Part 1:General

Publish Date: 2002-05-29

GB/T 18742.2-2002 Replaced

GB/T 18742.2-2002 Polypropylene piping systems for hot and cold water installations—Part 2:Pipes

Publish Date: 2002-05-29