SIST ISO 3213:2012 PDF

Name: SIST ISO 3213:2012 — Polypropylene (PP) pipes -- Effect of time and temperature on the expected strength
SKU: SIST ISO 3213:2012
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Polypropylene (PP) pipes -- Effect of time and temperature on the expected strength

Название (английский):

SIST ISO 3213:2012

Polypropylene (PP) pipes -- Effect of time and temperature on the expected strength

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 17
Дата публикации:: 4 июня 2012 г.
ICS:: 23.040.20
Технический комитет:: PCV - Plastic pipes, fittings and valves

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Описание (английский):

ISO 3213:2009 specifies the minimum values for expected strength as a function of time and temperature in the form of reference lines, for use in calculations on pipes made of: - polypropylene homopolymer (PP-H); - polypropylene block copolymer (PP-B) (also called heterophasic copolymer); - polypropylene random copolymer (PP-R); - polypropylene random copolymer (this material can be distinguished by DSC testing or another appropriate method to indicate a second melting peak) with a modified crystallinity (PP-RCT).

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview

ISO 3213:2009 - Polypropylene (PP) pipes: Effect of time and temperature on the expected strength defines minimum long‑term strength values for polypropylene piping materials as a function of time and temperature. The standard provides generic reference lines (mathematical relations) for expected hydrostatic hoop strength of PP homopolymer (PP‑H), block copolymer (PP‑B), random copolymer (PP‑R) and random copolymer with modified crystallinity (PP‑RCT). These reference lines are intended for use in design calculations, lifetime prediction and product conformity assessment.

Key topics and technical requirements

Scope: Applies to PP‑H, PP‑B, PP‑R and PP‑RCT pipes; reference lines represent minimum expected long‑term hydrostatic strength (not grade‑specific).

Reference lines & equations: Clauses define equations that describe hoop stress versus time and temperature for 20 °C to 95 °C; values at 110 °C are determined separately and shown for information.

Extrapolation and activation energy: Temperature dependence uses an Arrhenius approach with an activation energy of 110 kJ/mol. Extrapolation limits (factors K) are provided to relate lifetimes at 110 °C to lower temperatures.

Tabulated design values: Tables supply calculated hoop strength (MPa) for common times and temperatures for each PP type (no design factors included).

Conformance testing (Annex A):

Test temperatures: 20 °C; 60–82 °C; and 95 °C.
Time intervals: 10–100 h, 100–1 000 h, 1 000–8 760 h, and > 8 760 h.
At least three failure times required in each interval per temperature.
Testing per ISO 1167‑1 and ISO 1167‑2.
Conformance criterion: ≥ 97.5% of test results must plot on or above the appropriate reference line (Figures 1–4).

Intellectual property note: ISO records a patent claim related to PP‑RCT (EP1448631); licensing issues are acknowledged.

Applications and users

Pipe manufacturers for product development, specification and quality control.

Mechanical, civil and plumbing engineers for lifetime and pressure‑rating calculations.

Test laboratories performing long‑term hydrostatic aging and strength testing.

Regulatory bodies and certification agencies evaluating compliance and fitness‑for‑service.

Material suppliers and R&D teams assessing PP grades (including PP‑RCT) for high‑temperature performance.

Practical uses include hydrostatic life prediction, design verification, material selection for hot‑water or industrial fluid transport, and demonstrating long‑term strength in certification dossiers.

Related standards

ISO 1167‑1 / ISO 1167‑2 - methods for determining resistance to internal pressure (referenced for testing).

ISO 1043‑1 - polymer symbols and abbreviations (for PP‑type definitions).

Keywords: ISO 3213:2009, polypropylene pipes, expected strength, time and temperature, reference lines, PP‑RCT, hydrostatic strength, pipe design, long‑term strength.

SIST ISO 3213:2012 PDF

Abstract

Похожие стандарты

Overview

Key topics and technical requirements

Applications and users

Related standards

Технические детали

ISO 3213:2009

Polypropylene (PP) pipes — Effect of time and temperature on the expected strength

SIST EN ISO 1167-1:2006

Thermoplastics pipes, fittings and assemblies for the conveyance of fluids - Determination of the resistance…

SIST EN ISO 1167-2:2006

Thermoplastics pipes, fittings and assemblies for the conveyance of fluids - Determination of the resistance…

ISO 1043-1:2011/Amd 1:2016

Plastics — Symbols and abbreviated terms — Part 1: Basic polymers and their special characteristics — Amendme…