EN ISO 3928:2016 PDF

Name: EN ISO 3928:2016 — Sintered metal materials, excluding hardmetals - Fatigue test pieces (ISO 3928:2016)
SKU: EN ISO 3928:2016
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Sintered metal materials, excluding hardmetals - Fatigue test pieces (ISO 3928:2016)

Название (английский):

EN ISO 3928:2016

Sintered metal materials, excluding hardmetals - Fatigue test pieces (ISO 3928:2016)

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 15
Дата публикации:: 30 ноября 2016 г.
Издание:: CEN EN 3928 edition 2 version 1
ICS:: 77.040.10

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Описание (английский):

ISO 3928:2016 specifies - the die cavity dimensions used for making fatigue test pieces by pressing and sintering, together with certain dimensions of the test piece obtained from such a die, and - the dimensions of the test pieces machined from sintered and powder forged materials. ISO 3928:2016 is applicable to all sintered metals and alloys, excluding hardmetals.

Abstract

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Стандарты, упомянутые в описании

Overview

EN ISO 3928:2016 (ISO 3928:2016) specifies the geometry and manufacturing details for fatigue test pieces used with sintered metal materials (excluding hardmetals). The standard covers both pressed-and-sintered specimens made from die cavities and machined specimens from sintered or powder-forged materials. It is published by CEN/ISO and is intended for consistent fatigue testing practice in powder metallurgy and sintered metal evaluation.

Key topics and technical requirements

Scope: Applicable to all sintered metals and alloys except hardmetals.

Die cavity dimensions: Defines cavity shapes for producing unnotched and notched fatigue test pieces by pressing and sintering. Recommended die features include tapering (≈0.01 per side) and possible enlargement (≈0.5%) for repressing.

Test piece dimensions: Drawings and mandatory tolerances are supplied for unnotched and notched specimens. Flatness and parallelism of 0.1 mm are mandatory for gauge faces.

Notch tooling and wear: Tooling radius (e.g., 5.5 mm mentioned for die) is subject to wear; the corresponding radius in the produced specimen must be reported.

Material and tooling: Die material should preferably be hardmetal/carbide; die support (e.g., shrink rings) is recommended to reduce lateral expansion during compacting.

Orientation and loading: Specimen orientation for bending fatigue is defined (torque vector parallel to pressing direction unless stated otherwise).

Machined specimens: Examples include rotating-beam and axial-loading geometries. Machining guidance: use diamond grinding, longitudinal lapping, final longitudinal polishing, and diameter uniformity within ±0.025 mm. Note: carefully machined circular specimens can show 20–30% higher endurance limits than as-compacted square/rectangular pieces.

Quality checks: Gauge-region micro-lamination must be ≤ 0.25 mm; edges in gauge area shall be broken to remove burrs.

Identification requirements: Test reports should include reference to ISO 3928, material type, density, dimensions, finishing treatments, die material, heat treatment state, hardness, and notch radius (where applicable).

Applications

Standardizes specimen production for fatigue testing of sintered components in research, quality control, and material development.

Used to validate fatigue properties for powder metallurgy parts, optimize compaction/sintering tooling, and compare fatigue data across laboratories.

Supports fatigue test methods such as reverse bending, rotating-beam, and axial loading.

Related standards

ISO 1099, ISO 1352 and ISO 1143 - general principles and methods for fatigue testing of metals (referenced in Annex A of ISO 3928:2016).

Keywords: EN ISO 3928:2016, ISO 3928:2016, sintered metal, fatigue test pieces, powder metallurgy, fatigue testing, die cavity dimensions, machined test pieces, notched specimens.

EN ISO 3928:2016 PDF

Abstract

Похожие стандарты

Overview

Key topics and technical requirements

Applications

Who uses this standard

Related standards

Технические детали

ISO 3928:2016

Sintered metal materials, excluding hardmetals — Fatigue test pieces

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Sintered metal materials, excluding hardmetals - Fatigue test pieces (ISO 3928:2016)

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