MMechAtlasby MaintAi_Lab

EN ISO 683-1 / -2 / -3 / -4 Q&T non-alloy (C45), alloy (42CrMo4), case-hardening (16MnCr5), free-cutting steels

CurrentLatest edition found. Still confirm amendments with the publisher.
Edition
ISO 683-1:2016; ISO 683-2:2016; ISO 683-3:2022; ISO 683-4:2016
Publisher
EN
Part family
Steel grades & sections
Reviewed
23 October 2026 · source checked

Is EN ISO 683-1 / -2 / -3 / -4 still current?

Yes. ISO 683-1:2016; ISO 683-2:2016; ISO 683-3:2022; ISO 683-4:2016 is the latest edition MechAtlas found (MechAtlas review: 23 October 2026). Check the publisher for amendments before you specify it.

What it covers

Q&T non-alloy (C45), alloy (42CrMo4), case-hardening (16MnCr5), free-cutting steels

European adoptions are EN ISO 683-1/-2/-4:2018 and -3:2022; the ISO years are shown.

Equivalent and related standards

StandardRelationshipNote
Replaced EN 10083 / 10084 / 10087Related reference
AISI 1045 / 4140, IS 1570, JIS S45C / SCM440Similar purpose — not interchangeable without an engineering check

“Similar” never means interchangeable without an engineering check.

Parts that use EN ISO 683-1 / -2 / -3 / -4

Official source

MechAtlas does not reproduce standards. Check the official edition at the publisher's page for EN ISO 683-1 / -2 / -3 / -4 or the EN store.

Open in MechAtlasCheck a drawing callout

Other steel grades & sections standards

All Steel grades & sections standards →