SIST EN ISO 3327:2009 PDF

Name: SIST EN ISO 3327:2009 — Hardmetals - Determination of transverse rupture strength (ISO 3327:2009)
SKU: SIST EN ISO 3327:2009
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Hardmetals - Determination of transverse rupture strength (ISO 3327:2009)

Название (английский):

SIST EN ISO 3327:2009

Hardmetals - Determination of transverse rupture strength (ISO 3327:2009)

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 11
Дата публикации:: 12 июня 2009 г.
ICS:: 77.040.10
Технический комитет:: I13 - Imaginarni 13

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Описание (английский):

ISO 3327:2009 specifies a method for the determination of the transverse rupture strength of hardmetals. This method is applicable to hardmetals of negligible ductility. If it is used for hardmetals showing significant plastic deformation before breaking, incorrect results may be obtained. In such cases, the method may be used for comparison purposes only.

Abstract

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Overview

SIST EN ISO 3327:2009 is an international standard developed by ISO/TC 119 and adopted by CEN that specifies the method for determining the transverse rupture strength of hardmetals. This testing standard is essential for assessing the mechanical strength of hardmetals, materials known for their hardness and brittleness, making them widely used in cutting tools, wear-resistant parts, and industrial applications.

The standard applies primarily to hardmetals with negligible ductility, ensuring accuracy in measurements. For hardmetals exhibiting significant plastic deformation before fracture, this method may yield inaccurate results and should be applied only for comparative purposes.

Key Topics

Scope and Applicability This method targets hardmetals that break without noticeable plastic deformation. It defines how to measure transverse rupture strength under short-term static loading conditions.

Test Specimens Specifies three types of test pieces:

Type A & B: Rectangular cross-section test pieces, with detailed dimensions and surface finish requirements.
Type C: Cylindrical test pieces, suitable for specific testing scenarios.

Surface Preparation Test pieces must be ground or prepared with a specific surface roughness (maximum Rₐ of 0.4 µm) and chamfered edges to ensure consistent and reliable results.

Test Setup and Apparatus The standard requires a force application device capable of controlled load increments with an accuracy of at least 1%. Three precision tungsten carbide rollers (or a ball for flat specimens) are used to support and load the test pieces. Exact distances between supports and precise alignment criteria ensure repeatability and reliability.

Test Procedure The load is applied gradually at the midpoint of the specimen until rupture occurs, with defined maximum loading rates to avoid dynamic effects on results.

Calculation of Transverse Rupture Strength Formulas are provided for both rectangular and cylindrical specimens to compute rupture strength in N/mm², including correction factors for chamfer dimensions.

Reporting Requirements Test reports must clearly reference the standard, sample identification, specimen type, surface preparation, load application method, and results. Subscripts indicate specimen type and surface condition (sintered or ground).

Applications

Material Quality Control Crucial for manufacturers of hardmetals to ensure their products meet mechanical strength requirements before distribution.

Research and Development Enables comparative analysis of hardmetal formulations and processing techniques to enhance durability and performance.

Component Design Verification Engineers use transverse rupture strength data to validate component design safety and expected lifespan in demanding industrial environments like tooling and wear parts.

Failure Analysis Assists in identifying causes of premature fracture in hardmetal components through standardized strength measurement.

Related Standards

EN 23327:1993 – This was the predecessor to SIST EN ISO 3327:2009, now superseded by the updated method.

Other ISO standards under ISO/TC 119 cover powder metallurgy sampling and testing to complement mechanical property measurement of hardmetals.

Standards addressing surface preparation and hardness testing for hardmetals provide comprehensive quality assessment frameworks.

By adhering to the SIST EN ISO 3327:2009 standard, professionals working with hardmetals can reliably measure transverse rupture strength, a critical factor influencing the performance and safety of precision tools and wear-resistant parts. This test method facilitates consistent, comparable data across laboratories and industries, enhancing material selection and quality assurance processes.

SIST EN ISO 3327:2009 PDF

Abstract

Похожие стандарты

Overview

Key Topics

Applications

Related Standards

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ISO 3327:2009

Hardmetals — Determination of transverse rupture strength

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