ISO 349:1975

Hard coal — Audibert-Arnu dilatometer test

Publication date: 1 jan 1975

95.99 Withdrawal of Standard 13 jan 2020

General information

Current stage: 95.99 Effective date: 13 jan 2020

Originator: ISO

Owner: ISO/TC 27/SC 5

Type: International Standard

ICS: 73.040

Gjuha: frëngjisht anglisht

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Statusi: Shfuqizuar

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Scope

Specifies a method for determining the swelling properties of hard coal when heated under standard conditions in a dilatometer. In performing the method a pencil made of powdered coal formed under pressure is inserted into a precisely calibrated narrow tube and topped by a calibrated steel rod which slides in the bore of the tube. The whole is heated at a constant and definite rate. By making regular readings of the displacement of the rod as a function of the temperature and expressing the displacements observed as percentages of the original length of the penicl a curve is plotted.

Life cycle

NOW

WITHDRAWN
ISO 349:1975
95.99 Withdrawal of Standard
13 jan 2020

REVISED BY

PUBLISHED
ISO 349:2020

National adoptions

SSH ISO 349:1975

DPS

Antracit qymyr guri) - Prova me dilatometër Audibert-Arnu

60.60 Standard published

DPS/KT 19 më tepër