GB/T 40919-2021
Polyethylene materials for piping systems—Determination of Strain Hardening Modulus in relation to slow crack growth (English Version)
- Standard No.
- GB/T 40919-2021
- Language
- Chinese, Available in English version
- Release Date
- 2021
- Published By
- 国家市场监督管理总局、中国国家标准化管理委员会
- Latest
- GB/T 40919-2021
- Scope
- This document specifies a method for the determination of the strain hardening modulus for evaluating the slow crack growth resistance of polyethylene materials. This document gives a method for obtaining the strain hardening modulus by determining the stress-strain curve of compression molded specimens. This document specifies the required equipment, precision and sample preparation methods to obtain valid data. The test methods specified in this document are applicable to all kinds of polyethylene materials for pipes and fittings, regardless of the polyethylene production technology, comonomer and catalyst type. NOTE: This method can be used for material development for other purposes.
GB/T 40919-2021 Referenced Document
- ISO 5271 Benzene for industrial use; Specification
- ISO 7500-1 Metallic materials - Calibration and verification of static uniaxial testing machines - Part 1: Tension/compression testing machines - Calibration and verification of the force-measuring system
- ISO 9513 Metallic materials.Calibration of extensometer systems used in uniaxial testing; Technical Corrigendum 1
GB/T 40919-2021 history
- 2021 GB/T 40919-2021 Polyethylene materials for piping systems—Determination of Strain Hardening Modulus in relation to slow crack growth
