SIST EN ISO 28706-4:2016 PDF

Vitreous and porcelain enamels - Determination of resistance to chemical corrosion - Part 4: Determination of resistance to chemical corrosion by alkaline liquids using a cylindrical vessel (ISO 28706-4:2016)

Title (English):

SIST EN ISO 28706-4:2016

Document status:: Active
Format:: Electronic (PDF)
Number of pages:: 21
Publication date:: March 14, 2016
ICS:: 25.220.50
Technical committee:: IPKZ - Protection of metals against corrosion

Document language:

enru

Delivery time:1–7 days

Price:74 €

Description (English):

ISO 28706-4:2016 describes a test method for the determination of the resistance of vitreous and porcelain enamelled articles to attack by alkaline liquids at temperatures between 25 °C and 95 °C. The apparatus used is a cylindrical vessel in which only one enamelled specimen is tested. NOTE 1 The test method was initially set up for determination of the resistance of vitreous and porcelain enamels to a hot sodium hydroxide solution. Within the scope of this part of ISO 28706, the resistance of other alkaline liquids can be tested. NOTE 2 This part of ISO 28706, which uses a cylindrical vessel, is generally used for tests carried out on vitreous and porcelain enamel coatings for the chemical industry.

Technical details

SKU: SIST EN ISO 28706-4:2016

Abstract

Overview

EN ISO 28706-4:2016 specifies a laboratory test method to determine the resistance of vitreous and porcelain enamels to chemical corrosion by alkaline liquids using a cylindrical vessel. The standard applies to tests at temperatures from 25 °C to 95 °C and is commonly used for enamel coatings in the chemical industry. The apparatus is designed so that only one enamelled specimen is exposed per vessel. Although originally developed for hot sodium hydroxide solutions, the method is applicable to other alkaline media.

Key topics and requirements

Test principle: Controlled immersion of a single enamel specimen in an alkaline solution within a cylindrical vessel to measure material loss.
Temperature range: 25 °C to 95 °C (select test temperature per intended exposure conditions).
Representative solutions: Standard tests include 0.1 mol/l NaOH (hot) and 1.0 mol/l NaOH (hot); other alkaline solutions may be used as specified.
Apparatus: Cylindrical vessel sized and arranged for single-specimen testing to ensure reproducible exposure and temperature control.
Specimen preparation: Defined sample geometry and preparation to permit calculation of mass loss per unit area.
Measurements and results:
- Total loss in mass per unit area (g/m²) after exposure.
- Corrosion rate (where applicable) expressed as mass loss per unit area and time or converted to mm/year when attack is linear.
Reporting: Test solution composition, temperature, duration, specimen details, mass loss, and calculated corrosion rate are recorded as part of the test report.

Applications and users

Quality control and acceptance testing of enamelled equipment used in alkaline process environments (e.g., chemical reactors, tanks, piping).
Product development and comparative ranking of enamel formulations for alkali resistance.
Conformance testing by materials testing laboratories, manufacturers of vitreous and porcelain enamel coatings, procurement/specification engineers, and regulatory bodies overseeing process-safety materials.
Useful for industries where long-term alkaline exposure is expected (chemical processing, electroplating, waste treatment).

Related standards

ISO 28706-1 - acids at room temperature
ISO 28706-2 - boiling acids/neutral liquids and vapours
ISO 28706-3 - alkaline liquids using a hexagonal vessel
ISO 28706-5 - closed-system corrosion tests

Keywords: EN ISO 28706-4:2016, vitreous enamel corrosion, porcelain enamel, alkaline corrosion test, cylindrical vessel, NaOH test, corrosion rate, mass loss per unit area, enamel coatings, chemical industry.

Related standards

Standards mentioned in the description

Abstract

Overview

Key topics and requirements

Test principle: Controlled immersion of a single enamel specimen in an alkaline solution within a cylindrical vessel to measure material loss.
Temperature range: 25 °C to 95 °C (select test temperature per intended exposure conditions).
Representative solutions: Standard tests include 0.1 mol/l NaOH (hot) and 1.0 mol/l NaOH (hot); other alkaline solutions may be used as specified.
Apparatus: Cylindrical vessel sized and arranged for single-specimen testing to ensure reproducible exposure and temperature control.
Specimen preparation: Defined sample geometry and preparation to permit calculation of mass loss per unit area.
Measurements and results:
- Total loss in mass per unit area (g/m²) after exposure.
- Corrosion rate (where applicable) expressed as mass loss per unit area and time or converted to mm/year when attack is linear.
Reporting: Test solution composition, temperature, duration, specimen details, mass loss, and calculated corrosion rate are recorded as part of the test report.

Applications and users

Quality control and acceptance testing of enamelled equipment used in alkaline process environments (e.g., chemical reactors, tanks, piping).
Product development and comparative ranking of enamel formulations for alkali resistance.
Conformance testing by materials testing laboratories, manufacturers of vitreous and porcelain enamel coatings, procurement/specification engineers, and regulatory bodies overseeing process-safety materials.
Useful for industries where long-term alkaline exposure is expected (chemical processing, electroplating, waste treatment).

Related standards

ISO 28706-1 - acids at room temperature
ISO 28706-2 - boiling acids/neutral liquids and vapours
ISO 28706-3 - alkaline liquids using a hexagonal vessel
ISO 28706-5 - closed-system corrosion tests

SIST EN ISO 28706-4:2016 PDF

Technical details

Abstract

Overview

Key topics and requirements

Applications and users

Related standards

Related standards

Abstract

Overview

Key topics and requirements

Applications and users

Related standards

Related standards

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