ISO 7245:1984 PDF

Name: ISO 7245:1984 — Pipes and fittings of acrylonitrile/butadiene/styrene (ABS) — General specification for moulding and extrusion materials
SKU: ISO 7245:1984
Price: 25 EUR
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Pipes and fittings of acrylonitrile/butadiene/styrene (ABS) — General specification for moulding and extrusion materials

Название (английский):

ISO 7245:1984

Pipes and fittings of acrylonitrile/butadiene/styrene (ABS) — General specification for moulding and extrusion materials

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 3
Дата публикации:: 1 ноября 1984 г.
Издание:: ISO IS 7245 edition 1 version 1
ICS:: 23.040.20

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Описание (английский):

Specifies ABS-plastics for pipe applications, the properties chosen to designate ABS plastics for pipes are: acrylonitrile content, Vicat softening temperature, melt flow rate, impact strength and flexural modulus. Reference is made to ISO 2580.

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview

ISO 7245:1984 establishes general specifications for acrylonitrile/butadiene/styrene (ABS) plastics used in the manufacturing of pipes and fittings through moulding and extrusion processes. Developed by ISO/TC 138 - the technical committee focusing on plastic pipes, fittings, and valves for fluid transport - this standard defines essential material properties to ensure consistent quality and performance in piping applications. It complements the ABS plastics designations and testing methods detailed in ISO 2580.

This standard is vital for manufacturers, contractors, and engineers working with ABS piping systems, providing a reliable framework for selecting materials based on their mechanical and thermal characteristics.

Key Topics

Material Scope Applies specifically to ABS plastics with acrylonitrile content ≥ 20% in the continuous phase. It excludes materials with more than 5% copolymers or flame retardants and those containing reinforcing fibers.

Properties for Designation and Classification The standard focuses on five key properties to classify and designate ABS plastics for pipes and fittings:

Acrylonitrile content
Vicat softening temperature
Melt flow rate (hot fluidity index)
Impact strength (Izod or Charpy notched test)
Flexural modulus

Testing Methods Specifies standardized test methods referencing ISO standards such as ISO 178 (flexural properties), ISO 179 and ISO 180 (impact resistance), ISO 306 (Vicat softening temperature), and ISO 1133 (melt flow rate). Prescribed specimen preparation and conditioning ensure reliable and repeatable test results.

Material Designation System Includes a coding system identifying the ABS material by its physical properties suitable for piping applications, indicating properties like Vicat temperature range, melt flow rate limits, and mechanical strength grades.

Physical and General Characteristics Additional characteristics beneficial for application assessment include water absorption, thermal and weathering aging resistance, stress crack resistance, tensile properties, density (~1.06 g/cm³), thermal conductivity (~0.17 W/m·K), and coefficients of linear thermal expansion.

Applications

Plastic Pipes and Fittings ISO 7245:1984 guides manufacturers on selecting appropriate ABS materials for extruding or molding durable, reliable pipes and fittings used in water systems, drainage, ventilation, and industrial fluid transport.

Quality Assurance in Production Ensures materials meet minimum performance thresholds for temperature resistance, mechanical strength, and flow properties, leading to standardized products capable of withstanding typical service demands.

Material Selection and Specification Enables engineers and designers to specify ABS polymers with defined property ranges, streamlining procurement and ensuring compatibility with system requirements.

Compatibility Considerations Clarifies that identical material designations do not guarantee interchangeability, stressing the need for compatibility verification before mixing materials.

Related Standards

ISO 2580 Series Defines the designation and property determination methods specific to ABS plastics used in molding and extrusion, providing detailed testing protocols referenced by ISO 7245.

ISO 178 Specifies methods for determining flexural properties of rigid plastics, critical for assessing ABS pipe material stiffness.

ISO 179 and ISO 180 Describe impact testing methods for plastics using Charpy and Izod tests-essential for evaluating ABS toughness.

ISO 306 Details the Vicat softening temperature test method, indicating the thermal resistance limit of ABS materials.

ISO 1133 Provides the procedure for melt flow rate measurement, which informs processing parameters and material grade.

Summary

ISO 7245:1984 is an indispensable international standard that outlines the general specification for ABS plastics used in moulding and extrusion of pipes and fittings. By defining critical physical properties and standardized test methods, it ensures material consistency, mechanical integrity, and thermal performance-key factors for reliable ABS piping systems in various fluid transport applications. Awareness and application of this standard help manufacturers and engineers deliver high-quality, compliant plastic piping solutions worldwide.

ISO 7245:1984 PDF

Abstract

Похожие стандарты

Overview

Key Topics

Applications

Related Standards

Summary

Технические детали

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