ISO 6259-2:2020 specifies a tensile-testing method for thermoplastics pipes made from specific PVC materials, including PVC-U, PVC-O, PVC-C, and high-impact PVC (PVC-HI).
It is commonly used when pipe manufacturers, QA/QC teams, and third-party labs need comparable tensile results for product qualification, process control, or compliance to a pipe product specification. If you are unsure whether ISO 6259-2 is the right part for your pipe material and product form, you can contact our team for application guidance.
ISO 6259-2:2020 — Thermoplastics pipes — Determination of tensile properties — Part 2
ISO 6259-2 is an ISO International Standard focused on tensile properties testing for PVC-based thermoplastics pipe compounds covered by this part of the ISO 6259 series.
This document is used alongside ISO 6259-1, which provides the general method framework for tensile testing of thermoplastics pipes, while ISO 6259-2 provides the part-specific requirements for the PVC pipe types listed in its title.
Quick Definition
ISO 6259-2 defines how to determine key tensile properties for certain PVC thermoplastics pipes, including stress at yield, stress at break, and elongation at break.
Document type: International Standard (test method for tensile properties of specified thermoplastics pipes).
Primary outputs: Stress at yield, stress at break, and elongation at break (as applicable to the material behavior and the standard’s definitions).
What This Standard Covers
This standard covers tensile testing requirements for pipes made of unplasticized PVC (PVC-U), oriented unplasticized PVC (PVC-O), chlorinated PVC (PVC-C), and high-impact PVC (PVC-HI).
It also includes annex information with corresponding “basic specifications” for information purposes, which can be helpful context when reviewing requirements within a broader pipe qualification or purchasing specification.
Why This Standard Matters in Testing
PVC pipe tensile behavior is often used as a quick, comparable indicator of material performance and manufacturing consistency. A standardized method supports repeatable results across production sites, laboratories, and supply chains.
For buyers and specifiers, ISO 6259-2 results are typically used to support acceptance decisions, product qualification, and technical documentation where a PVC pipe standard calls up tensile performance verification.
Common Materials, Product Types, or Applications Covered
Materials covered: PVC-U, PVC-O, PVC-C, and high-impact PVC (PVC-HI).
Product form: Thermoplastics pipes (as produced), when tensile properties are required for PVC pipe evaluation.
Common application contexts: PVC pressure and non-pressure piping product evaluation, incoming or outgoing quality control, and comparative testing across batches or suppliers.
Common Test or Verification Workflow
ISO 6259-2 is typically used as part of a controlled tensile testing workflow for pipe products, where specimen preparation and test execution follow the ISO 6259 series conventions.
Common workflow: Select pipe samples from production or inventory, prepare tensile test pieces appropriate for the pipe form, condition specimens as required by the test plan, run tensile tests under controlled conditions, and report yield/break stress and elongation at break as applicable.
Practical note: Equipment configuration and reporting expectations can depend on how the standard is cited by a product specification (and whether the job references ISO 6259-1 in addition to ISO 6259-2).
Equipment Commonly Used for This Standard
ISO 6259-2 tensile testing is commonly performed on a universal testing machine configured for polymer tensile measurements, with fixtures and measurement devices selected to match the pipe specimen geometry and the required outputs.
Common equipment: Universal testing machine (UTM), appropriate grips/fixtures for pipe-derived tensile specimens, and an extension/strain measurement approach suitable for the required properties (often an extensometer or equivalent measurement method based on the lab’s setup and the standard’s requirements).
Common supporting tools: Specimen preparation tools for cutting/machining from pipe and a conditioning environment when a controlled conditioning step is required by the lab’s test plan.
If you are selecting load capacity, grips, and strain measurement options for PVC pipe tensile work, you can request a detailed quote for a system configuration matched to your specimen geometry and throughput.
How to Read This Designation or Revision
Standard number: ISO 6259-2 identifies Part 2 in the ISO 6259 series for thermoplastics pipe tensile properties testing.
Year suffix: The “:2020” in ISO 6259-2:2020 indicates the publication year of that edition.
Edition awareness: ISO 6259-2:2020 is Edition 2, and it replaced the earlier ISO 6259-2:1997 edition. For compliance work, align the test setup and reporting to the exact edition referenced by your customer, contract, or product standard.
Related Standards, Methods, or Frameworks
ISO 6259-2 is part of the ISO 6259 series. In practice, ISO 6259-1 is commonly used with this part because it provides the general test method framework for tensile properties determination of thermoplastics pipes.
When a pipe product specification references ISO 6259, confirm whether it calls up ISO 6259-2 specifically (PVC pipe types) and whether additional parts of the ISO 6259 series are also required for the full compliance package.
Talk with a testing specialist
If you need help mapping ISO 6259-2 requirements to a practical lab setup (machine capacity, grips/fixtures, and strain measurement), talk with our team about your pipe dimensions, material type, and reporting requirements.