Name: ISO 2739:2012 — Sintered metal bushings — Determination of radial crushing strength
SKU: ISO 2739:2012
Price: 25 EUR
Availability: InStock

★Низкие цены. Оригиналы и переводы — экономьте время и бюджет.

GLSTDStandards Store

Корзинапуста

ISO 2739:2012 PDF — Sintered metal bushings — Determination of radial crushing strength — GOST Standards

Test Principle
The test involves applying a continuously increasing radial load on a hollow cylindrical sintered metal bushing until breakage or a specified deformation limit is reached. The maximum load at failure is used to calculate the radial crushing strength.
Test Specimen Requirements
Specimens must be sintered hollow cylinders without flanges, notches, or holes. They can be machined or oil-impregnated, but machining may affect test results. Precise dimensional measurements (diameter, length, and wall thickness) are required for accurate calculations.
Apparatus and Setup
The apparatus includes a pressing machine capable of applying radial loads, highly accurate load-measuring devices, and two flat steel loading plates ensuring parallel contact with the specimen.
Measurement Procedure
The bushing is placed horizontally between loading plates. Load is applied at a controlled speed not exceeding 5 mm/min until fracture or load drop occurs, recording the maximum load to an accuracy of 0.1%.
Calculation of Radial Crushing Strength
Radial crushing strength (K) in N/mm² is calculated using the formula:
```
K = F / (2 × L × e × (D - e))
```
where F = maximum load (N), L = length (mm), D = external diameter (mm), and e = wall thickness (mm). The formula is valid if wall thickness to diameter ratio (e/D) is less than 1/3.
Precision and Accuracy
The standard provides repeatability and reproducibility data, indicating the expected accuracy within and between laboratories to ensure consistent quality assessment.
Test Reporting
Test reports must reference ISO 2739:2012 and include specimen identification, condition (sintered, sized, machined, or oil-impregnated), test results, and any test anomalies or optional procedures used.

ISO 2739:2012

Abstract

Overview

Похожие стандарты

Key Topics

Applications

Related Standards

Технические детали

BS EN ISO 2739:2012

Sintered metal bushings. Determination of radial crushing strength.

ISO 8212:1986

Soaps and detergents — Techniques of sampling during manufacture

ISO 20662:2020

Ships and marine technology — Hopper dredger supervisory and control systems

ISO 3021:2023

Adventure tourism — Hiking and trekking activities — Requirements and recommendations

ISO 3826-2:2008

Plastics collapsible containers for human blood and blood components — Part 2: Graphical symbols for use on l…

ISO/IEC 24730-1:2014

Information technology — Real-time locating systems (RTLS) — Part 1: Application programming interface (API)

ISO 8668-5:1992

Aircraft — Terminal junction systems — Part 5: Detail specification for type 3 system

ISO 7574-3:1985

Acoustics — Statistical methods for determining and verifying stated noise emission values of machinery and e…