ISO 4211-4:1988 PDF

Name: ISO 4211-4:1988 — Furniture — Tests for surfaces — Part 4: Assessment of resistance to impact
SKU: ISO 4211-4:1988
Price: 25 EUR
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Furniture — Tests for surfaces — Part 4: Assessment of resistance to impact

Название (английский):

ISO 4211-4:1988

Furniture — Tests for surfaces — Part 4: Assessment of resistance to impact

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 7
Дата публикации:: 7 июля 1988 г.
Издание:: ISO IS 4211 edition 1 version 1
ICS:: 97.140

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Описание (английский):

The specified method is suitable for use either as a means of comparing different finishing systems or as a quality control test to ensure that a specified performance level is achieved or maintained. The tests are carried out on panels of the same materials and finished in the identical manner as the finished furniture of a size sufficient to meet the requirements of the test. The degree of damage to the test area is assessed by reference to a descriptive numerical rating code.

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview

ISO 4211-4:1988 - Furniture - Tests for surfaces - Part 4: Assessment of resistance to impact - defines a laboratory method to evaluate the impact resistance of furniture surface finishes. The procedure is intended for comparing different finishing systems or for quality‑control to verify that a specified performance level is achieved or maintained. Tests are performed on panels made from the same substrate and finished identically to the finished furniture, and results are expressed using a descriptive numerical rating code.

Key topics and requirements

Test principle: a cylindrical steel weight is dropped through a vertical guide tube onto a hardened steel ball placed on the test surface; damage is rated visually.

Apparatus and test pieces:

Horizontal rigid base to support the panel.
Vertical guide tube (inner diameter ≈ 40 mm, allowance indicated in the standard).
Cylindrical drop weight: mass 500 ± 5 g, sized to move freely in the guide tube.
Steel ball: 14 mm diameter, hardness about 60–66 HRC (see ISO 3290 for bearing balls).
Magnifying loupe (min. 7×) with graduated scale for measurement.
Test panel: flat, prepared and finished as per the final furniture, preferably ≥ 120 mm × 140 mm.

Drop heights: series of specified heights (10, 25, 50, 100, 200 and 400 mm) with five impacts per height. Each impact point must be ≥ 20 mm from panel edges and from other impacts.

Conditioning: panels and, for commercial products, finishes should be aged and conditioned (the standard specifies aging and conditioning regimes prior to testing and testing at 23 ± 2 °C, 50 ± 5 % RH).

Assessment:

Visual examination under direct light while varying the light angle 0–30°; use magnification to detect cracks.
Use a descriptive numerical code to classify damage (examples: no visible change; surface cracking limited to impact mark; cracks extending beyond mark; flaking/peeling).
Measure and report the mean impact‑mark diameter (average of five tests) and the mean rating for each drop height.

Reporting: include standard reference, panel/substrate and finish details, drop heights, reported values, test result vs. specification, deviations and date.

Applications and users

Furniture manufacturers and finish suppliers validating resistance to impact during product development.

Quality‑control and production labs verifying batch conformity.

Independent testing laboratories and compliance engineers preparing test reports for specifications, procurement or warranty claims.

Spec writers and procurement teams setting minimum surface impact‑resistance criteria in tenders and standards.

ISO 4211-4:1988 PDF

Abstract

Похожие стандарты

Overview

Key topics and requirements

Applications and users

Related standards

Технические детали

SIST ISO 3290-2:2015

Rolling bearings - Balls - Part 2: Ceramic balls

SIST EN ISO 6508-1:2024

Metallic materials - Rockwell hardness test - Part 1: Test method (ISO 6508-1:2023)

SIST ISO 4211-4:1995

Furniture -- Tests for surfaces -- Part 4: Assessment of resistance to impact