ISO 6581:2018 PDF

Name: ISO 6581:2018 — Anodizing of aluminium and its alloys — Determination of the comparative fastness to ultraviolet light and heat of coloured anodic oxidation coatings
SKU: ISO 6581:2018
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Anodizing of aluminium and its alloys — Determination of the comparative fastness to ultraviolet light and heat of coloured anodic oxidation coatings

Название (английский):

ISO 6581:2018

Anodizing of aluminium and its alloys — Determination of the comparative fastness to ultraviolet light and heat of coloured anodic oxidation coatings

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 4
Дата публикации:: 22 августа 2018 г.
Издание:: ISO IS 6581 edition 3 version 1
ICS:: 25.220.20

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Описание (английский):

This document specifies a comparative method for the determination of the fastness of coloured anodic oxidation coatings to ultraviolet (UV) light and heat. The method is not suitable for testing coloured anodic oxidation coatings that are heat sensitive. NOTE Dark-coloured test specimens will normally reach the highest temperatures.

Abstract

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Упомянутые в описании и другие стандарты ISO

Overview

ISO 6581:2018 specifies a comparative method to determine the fastness of coloured anodic oxidation coatings on aluminium and its alloys when exposed to ultraviolet (UV) light and heat. The procedure is intended for comparative assessments and rapid determination of light-fastness; it is not suitable for heat-sensitive coloured coatings. The test is severe compared with natural sunlight exposure and is designed for quality control, material selection and process validation.

Key Topics

Principle: Expose test specimens and standard specimens to a UV light source and compare resulting colour changes.

Apparatus: A heat-resistant, enclosed cabinet with an equidistant specimen arrangement and a medium-pressure mercury arc-lamp (silica envelope) is used. Lamp output varies with age; typical examples in the standard include a 400 W lamp with ~150 mm effective arc length placed at approximately 170 mm from specimens.

Temperature control: Surface temperature of specimens shall not exceed 100 °C. Cooling (fans) and manufacturer guidance for lamp cooling should be followed to avoid affecting lamp arc.

Specimen preparation: Samples should be taken from flat, representative surfaces (avoid edges), cleaned of contaminants, and typically larger than 150 mm × 70 mm.

Ozone and safety: Some lamps produce ozone; forced ventilation and ducting may be necessary. The cabinet must prevent UV escape and include an interlock to switch off the lamp when opened.

Result expression and reporting: Record exposure time to reach the agreed level of colour change or describe changes after an agreed exposure period. The test report must reference ISO 6581:2018 and include product identification, specimen colour/production method, apparatus details (lamp model, wattage, arc length, distance), exposure times, observed colour changes and any deviations from the procedure.

Applications

Quality control: Rapid comparative screening of coloured anodized finishes for production batches.

Material selection: Compare alternative anodizing processes, dyes or alloys for resistance to UV and heat.

Process validation: Verify consistency of anodizing baths and finishing operations against standard specimens with known UV resistance.

Related Standards

ISO 7583 - Terms and definitions for anodizing of aluminium and its alloys (referenced by ISO 6581:2018).

For laboratories and anodizers, ISO 6581:2018 provides a structured, repeatable comparative test to assess and report the UV and heat fastness of coloured anodic coatings, enabling informed decisions on coating selection and process control.

ISO 6581:2018 PDF

Abstract

Похожие стандарты

Overview

Key Topics

Applications

Related Standards

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