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ISO/TR 21704:2017

Current
Current

The latest, up-to-date edition.

Toughness of round steel link chains Test with sub-size specimens
Available format(s)

Hardcopy , PDF , PDF 3 Users , PDF 5 Users , PDF 9 Users

Language(s)

English, French

Published date

01-13-2017

ISO/TR 21704:2017 contains investigations and investigation results on toughness of round steel link chains, tested with sub-size specimens.

It applies to round steel link chains for hand operated chain hoists of grade TH and VH and for sling chains used for chain slings of grade 8.

NOTE 1 Associated International Standards are ISO 16877, ISO 16872 and ISO 3076. In future it is intended to implement the results on toughness derived in this document in new standards.

Eleven steels, provided by four manufacturers, were tested to find a test regime on sub-size specimens and requirements on the notch impact toughness values at design temperature which resulted out of the tests. These requirements are adjusted to the toughness values of full size ISO-V specimens.

NOTE 2 The requirements are also valid for other cross sections of the chain than round.

DocumentType
Technical Report
Pages
43
PublisherName
International Organization for Standardization
Status
Current

Standards Relationship
PD ISO/TR 21704:2017 Identical
FD ISO/TR 21704 : 2017 FD Identical

ISO 14556:2015 Metallic materials — Charpy V-notch pendulum impact test — Instrumented test method
ISO/TR 23602:2005 Toughness of chain steels
ISO 148-1:2016 Metallic materials — Charpy pendulum impact test — Part 1: Test method
ISO 3076:2012 Round steel short link chains for general lifting purposes — Medium tolerance sling chains for chain slings — Grade 8
ISO 16872:2015 Round steel short link chains for lifting purposes Fine tolerance hoist chains for hand operated chain hoists Grade VH
ISO 16877:2015 Round steel short link chains for lifting purposes Fine tolerance hoist chains for hand operated chain hoists Grade TH

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