Slow Crack Growth Test to ISO 13479

ISO 13479 测试 Methods for Slow Crack Growth Resistance and 材料s Tested

在im体育APP, our unwavering commitment to providing thorough insights into slow crack growth (SCG) resistance goes beyond standardized testing procedures. We pride ourselves on encompassing a diverse array of materials in our testing methodologies, with the ISO 13479 testing method serving as a linchpin in our 塑料管道 & 配件测试程序. This meticulous approach is rigorously applied to polyethylene (PE) and cross-linked polyethylene (PEX) pipes, offering invaluable testing solutions to clients across various industries, 包括树脂制造, 管挤压, 认证机构, 世界各地的公用事业公司.

The SCG test is part of im体育APPs global 塑料管道 & 配件测试程序, provided to resin manufacturers, 管挤出机, 认证机构 世界各地的公用事业公司, 独立的地方, reliable and reproducible test data is required for product classification and life time evaluation.

原理及测试程序

The fundamental principle underpinning ISO 13479 testing involves subjecting a minimum of three PE or PEX pipes to controlled notching before exposing them to hydrostatic pressure in tap water. The primary metric evaluated is the time to failure under these conditions, providing a robust measure of slow crack growth resistance.

开槽过程

In the notching process, four controlled stress points are strategically introduced on the pipes. This meticulous notching simulates real-world scenarios, allowing for a comprehensive assessment of the material's ability to resist slow crack growth while maintaining structural integrity.

静水压力试验

按照刻痕过程, the pipes undergo hydrostatic pressure testing in tap water, replicating operational conditions. 结果, 表达在时间到失败, offer a quantitative understanding of how well the material withstands stress over time, providing critical insights into the material's performance.

材料-Specific标准

ISO 13479 testing is tailored to specific standards for different materials, ensuring a nuanced evaluation across diverse applications. 这些标准包括:

• ISO 4427 and EN 12201: Pertaining to Plastic piping systems – Polyethylene (PE) pipes and fittings for water supply.
• ISO 4437 and EN 1555: Addressing requirements for buried polyethylene (PE) pipes intended for the supply of 气体eous fuels.
• ISO 14531: Relating to cross-linked polyethylene (PEX) pipe systems designed for the conveyance of 气体eous fuel.

im体育APP测试材料

im体育APP specializes in testing a variety of materials, offering a comprehensive understanding of slow crack growth resistance. Some of the materials we test include:

All testing is performed using tap water at 80°C as test media. The pressures in the table are based on SDR 11 pipes.

Test Conditions for PE and PEX 材料s

确保全面洞察

By encompassing an array of materials in our testing portfolio, im体育APP ensures that clients receive thorough and customized information, contributing to the longevity and reliability of their PE and PEX pipes in various applications. In conclusion, trust im体育APP for a comprehensive and nuanced approach to slow crack growth testing.

Our globally recognized methodologies, coupled with a diverse materials testing portfolio, empower industries to make informed decisions about the performance and durability of their products. With a commitment to precision and excellence, im体育APP stands as a trusted partner in ensuring the integrity of PE and PEX pipes in real-world applications.