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ISO 18391:2016

Geometrical product specifications (GPS) — Population specification

Sep 30, 2016

General information

90.93     Dec 10, 2021

ISO

ISO/TC 213

International Standard

17.040.40  

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Scope

ISO 18391:2016 defines rules to establish and to indicate population specifications, which are used to specify conditions on population characteristics, which are established from a set of characteristic values obtained one on each workpiece of a population of workpieces.
A population specification (as applied to a population of workpieces considered as a collection and not as individual items) can be seen as a complementary requirement to the individual specification (as applied to each workpiece considered as individual items). Population specifications express the statistical hypotheses used on the population of workpieces.
NOTE 1 A population specification is a complement to an individual GPS specification.
NOTE 2 ISO 18391:2016 is not intended to mandate a given tolerancing method or how to calculate tolerance values. Its intent is to specify tools to allow the expression of population specifications.

Life cycle

NOW

PUBLISHED
ISO 18391:2016
90.93 Standard confirmed
Dec 10, 2021

National adoptions

SRPS EN ISO 18391:2017  
ISS

Geometrical product specifications (GPS) - Population specification (ISO 18391:2016)

60.60   Standard published

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