EN 23312:1993 PDF

Name: EN 23312:1993 — Sintered metal materials and hardmetals - Determination of Young modulus (ISO 3312:1987)
SKU: EN 23312:1993
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Sintered metal materials and hardmetals - Determination of Young modulus (ISO 3312:1987)

Название (английский):

EN 23312:1993

Sintered metal materials and hardmetals - Determination of Young modulus (ISO 3312:1987)

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 5
Дата публикации:: 7 апреля 1993 г.
Издание:: CEN EN 23312 edition 1 version 1
ICS:: 77.040.10

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Описание (английский):

This second edition cancels and replaces the first edition (i.e. ISO 3312:1975). Specifies a method for the determination of the dynamic (adiabatic) Young moduls by longitudinal oscillations of sintered metal materials and hardmetals. Gives principle, symbols and units, apparatus, preparation of the pieces, procedure, expression of results and test report.

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview

EN 23312:1993 (identical to ISO 3312:1987) specifies a standardized method to determine the dynamic (adiabatic) Young modulus of sintered metal materials and hardmetals by exciting longitudinal ultrasonic oscillations and measuring the specimen’s resonance frequency. Published by CEN and prepared by ISO/TC 119 (Powder Metallurgy), this edition replaces the earlier 1975 version and defines principle, apparatus, specimen preparation, procedure, result expression and required test report information.

Key Topics and Requirements

Test principle: excite longitudinal oscillations in a fixed specimen and measure the natural resonance frequency.

Apparatus:

Fixture to mount the specimen
Ultrasonic oscillator with continuous control in the 20–100 kHz range
Device for determining resonance frequency (resolution to ±50 Hz)

Specimen dimensions:

Minimum length: 60 mm
Round cross-section: 6 +0.2 mm diameter
Rectangular cross-section: (6 +0.2) mm × (8 +0.2) mm

Surface and dimensional tolerances:

Remove surface layer ≥ 0.1 mm
Surface roughness Ra ≤ 1.25 µm
End faces ground and parallel within 0.02 mm
Specimen free of surface cracks and cleaned immediately before testing

Density and length measurements:

Density determined per ISO 2738 to 0.01 g/cm³
Length measured to 0.1 mm

Calculation:

Young modulus given by: E = 4 × 10^−9 × L^2 × ρ × f^2 (as in the standard)
Report results rounded to the nearest 5 × 10^3 N/mm²

Test report must reference the standard, identify the sample, state the result and any non‑specified operations or events affecting results.

Applications and Who Uses It

Practical for quality control, R&D and materials characterization in:

Powder metallurgy manufacturers
Hardmetal (cemented carbide) producers
Materials testing laboratories and certification bodies
Design engineers needing elastic property data for components made from sintered metals

Useful for comparing mechanical stiffness (Young modulus) between sintered compositions, porosity levels and processing routes.

Related Standards

ISO 2738 - Determination of density, oil content and open porosity for permeable sintered metal materials (referenced for density measurement).

Note: EN 23312:1993 corresponds to ISO 3312:1987; earlier edition ISO 3312:1975 was cancelled.

Keywords: EN 23312:1993, ISO 3312:1987, Young modulus, sintered metal materials, hardmetals, dynamic Young’s modulus, longitudinal oscillations, resonance frequency, powder metallurgy, mechanical testing.

EN 23312:1993 PDF

Abstract

Похожие стандарты

Overview

Key Topics and Requirements

Applications and Who Uses It

Related Standards

Технические детали

ISO 3312:1987

Sintered metal materials and hardmetals — Determination of Young modulus

ISO 3312:1975

Sintered metal materials and hardmetals — Determination of Young's modulus

BS EN ISO 2738:2026

Sintered metal materials, excluding hardmetals. Permeable sintered metal materials. Determination of density,…