SIST EN ISO 2740:2023 PDF

Name: SIST EN ISO 2740:2023 — Sintered metal materials, excluding hardmetals - Tensile test pieces (ISO 2740:2023)
SKU: SIST EN ISO 2740:2023
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Sintered metal materials, excluding hardmetals - Tensile test pieces (ISO 2740:2023)

Название (английский):

SIST EN ISO 2740:2023

Sintered metal materials, excluding hardmetals - Tensile test pieces (ISO 2740:2023)

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 15
Дата публикации:: 25 октября 2023 г.
Издание:: ISO 2740:2023
ICS:: 77.040.10

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Описание (английский):

This document is applicable to all sintered metals and alloys, excluding hardmetals. This document specifies: — the die cavity dimensions used for making tensile test pieces by pressing and sintering, and by metal injection moulding (MIM) and sintering; — the dimensions of tensile test pieces machined from sintered and powder forged materials.

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview

EN ISO 2740:2023 - Sintered metal materials, excluding hardmetals - Tensile test pieces (ISO 2740:2023) - defines standard geometries and manufacturing details for tensile test specimens used to evaluate sintered metals and alloys (excluding hardmetals). Published by CEN/ISO, this standard specifies die cavity dimensions for pressed-and-sintered and metal injection moulded (MIM) specimens, plus the dimensions and handling of machined test pieces produced from sintered or powder‑forged materials.

Key topics and technical requirements

Scope: Applies to all sintered metals and alloys except hardmetals; supersedes EN ISO 2740:2009.

Test method references: Requires tensile testing in accordance with ISO 6892-1 and force‑measuring calibration to ISO 7500-1.

Pressed & sintered specimens:

Recommended thickness range: 5 mm to 6.5 mm (with an accommodating thickness tolerance).
Gauge marking: optional light scribe marks 25 mm apart; gauge thickness variation between marks limited.
Metallographic check: inspect for microlaminations; maximum acceptable microlamination length specified.

Die specifications:

Die cavity geometries are defined for standard, serrated and high‑strength test pieces (figures provided in the standard).
Dies are preferably made of hardmetal; optional small exit taper (e.g., 0.01 mm per side) to ease ejection; repressing dies may be up to 0.5% larger.
Design considerations to reduce cracking and slippage (shrink rings, hold‑down punches, serrations or 20° wedge faces for gripping).

MIM test pieces:

Two MIM die types (larger and smaller) are described; cavities account for sintering shrinkage (typical design assumptions provided).
Holes may be moulded or drilled post‑sintering to accept hardened pins for clevis gripping.

Machined test pieces:

Button‑head and cylindrical geometries defined (example: machined from a standard bar).
Specific guidance for heat‑treated materials, surface preparation, and when small diameters (

SIST EN ISO 2740:2023 PDF

Abstract

Похожие стандарты

Overview

Key topics and technical requirements

Технические детали

ISO 2740:2023

Sintered metal materials, excluding hardmetals — Tensile test pieces

ISO 2740:2009

Sintered metal materials, excluding hardmetals — Tensile test pieces

SIST EN ISO 6892-1:2020

Metallic materials - Tensile testing - Part 1: Method of test at room temperature (ISO 6892-1:2019)

SIST EN ISO 7500-1:2018

Metallic materials - Calibration and verification of static uniaxial testing machines - Part 1: Tension/compr…