EN ISO 2747:2022 PDF

Name: EN ISO 2747:2022 — Vitreous and porcelain enamels - Enamelled cooking utensils - Determination of resistance to thermal shock (ISO 2747:1998)
SKU: EN ISO 2747:2022
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Vitreous and porcelain enamels - Enamelled cooking utensils - Determination of resistance to thermal shock (ISO 2747:1998)

Название (английский):

EN ISO 2747:2022

Vitreous and porcelain enamels - Enamelled cooking utensils - Determination of resistance to thermal shock (ISO 2747:1998)

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 10
Дата публикации:: 28 сентября 2022 г.
Издание:: CEN EN 2747 edition 1 version 1
ICS:: 25.220.50

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Описание (английский):

This International Standard specifies a method of determining, by successive thermal shock tests, the behaviour of vitreous and porcelain enamelled cooking utensils and similar articles under sudden changes of temperature (resistance to thermal shock).

Abstract

Похожие стандарты

Упомянутые в описании и другие стандарты EN

Overview

EN ISO 2747:2022 (identical to ISO 2747:1998) specifies a laboratory method for determining the resistance to thermal shock of vitreous and porcelain enamelled cooking utensils and similar articles. The standard defines a repeatable procedure of successive thermal shock tests - heating the utensil to a defined temperature and then chilling it with cold water - to identify the temperature at which the enamel first shows visible damage (chipping or tension cracks).

Key topics and technical requirements

Scope and purpose: Measure behaviour of enamelled cookware under sudden temperature changes to quantify thermal shock resistance.

Definitions: Includes terms such as thermal shock test, thermal shock temperature, thermal shock resistance, and damage (visible at 250 mm or revealed by coloured penetrating fluids).

Test principle: Series of single thermal shock cycles with a 20 °C increase between successive tests until damage occurs.

Temperatures:

First thermal shock temperature: 200 °C ± 5 °C.
Subsequent tests: increase by 20 °C increments (e.g., 220 °C, 240 °C, …).
Chilling water temperature: 20 °C ± 1 °C.
Specimen considered damaged when first visible chipping or tension cracks appear.

Specimens and sampling:

Use actual utensils without modification.
At least three specimens representative of the lot.

Apparatus:

Controlled electric hot-plate sized and powered per the standard (tabled diameters and outputs).
Fast-response temperature measuring device (±2 °C), thermometer, stopwatch, water receptacle, drying materials.

Procedure highlights:

Fill specimen with water to 30 mm (if possible), heat to target temperature, pour in cold water in one pouring, remove after ~5 s, then fully immerse to cool rapidly.
Inspect for damage when specimen returns to room temperature (23 °C ± 1 °C).

Results and reporting:

Report individual and average thermal shock temperatures and calculated average thermal shock resistance (average temperature minus 20 °C).
Include specimen description, sampling plan, hot-plate details, type of damage (photograph if necessary), and any deviations (e.g., water depth).

Applications and users

Manufacturers of enamelled cookware and kitchenware for product development and quality control.

Independent test laboratories performing conformity, durability and safety testing.

Certification bodies and regulatory organizations assessing cookware performance.

R&D teams optimizing enamel formulations, enamel thickness, and substrate/enamel compatibility to improve thermal performance.

Related standards

Adopted by CEN as EN ISO 2747:2022 (no technical changes to ISO 2747:1998).

Prepared by ISO/TC 107 and adopted by CEN/TC 262 - useful context for traceability and harmonized European implementation.

Keywords: EN ISO 2747:2022, thermal shock resistance, enamelled cooking utensils, vitreous and porcelain enamels, thermal shock test, cookware testing.

EN ISO 2747:2022 PDF

Abstract

Похожие стандарты

Overview

Key topics and technical requirements

Applications and users

Related standards

Технические детали

ISO 2747:1998

Vitreous and porcelain enamels — Enamelled cooking utensils — Determination of resistance to thermal shock

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