GB/T 12825-2003: polymeric materials, cellular flexible -- Determination of hardness by indentation technique

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Scope

This Standard specifies three methods for determining the indentation, hardness of
flexible cellular materials:
method A (indentation hardness index), which gives a single indentation measurement
for laboratory test purposes;
method B (indentation hardness characteristics), which provides information about the
shape of the hardness indentation curve;
method C (indentation hardness check), which is a quick procedure suitable for quality
control testing.
This Standard is applicable only to latex, urethane foam and PVC foam of the open cell
type.
Note: The indentation hardness of flexible cellular materials is a measure of their load-
bearing properties. The methods specified can be used for testing finished
articles and for the characterization of bulk material.
The results obtained by these methods relate only to the test conditions specified and
cannot, in general, be used directly for design purposes.

Basic Data

Standard ID	GB/T 12825-2003 (GB/T12825-2003)
Description (Translated English)	polymeric materials, cellular flexible. Determination of hardness by indentation technique
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	G44
Classification of International Standard	83.100
Word Count Estimation	5,57
Date of Issue	2003-01-10
Date of Implementation	2003-07-01
Older Standard (superseded by this standard)	GB/T 12825-1991
Adopted Standard	ISO 2439-1997; IDT
Issuing agency(ies)	General Administration of Quality Supervision, Inspection and Quarantine of the People Republic of China
Summary	This standard specifies: Three -side fixed porous elastic material concave person hardness methods: Method A (concave person hardness index)