AFNOR · 1,469 grades

AFNOR steel grades — 1469 designations — Page 11

Every grade designated under AFNOR, with the material number it maps to, what kind of steel it is, its carbon window and how many other standards carry it. Open a grade for its full composition, properties and its designations in other standards. Every name on this page is an indicative cross-reference, not an asserted identity: the grades are close, not interchangeable. Check the composition before you substitute.

Also known as

1469 designations

Grade	Material no.	Category	C% by weight	Also inother standards
C20	1.0402	Quenched and tempered steels	0.17–0.24	24
C22	1.0402	Quenched and tempered steels	0.17–0.24	24
C22E	1.0402	Quenched and tempered steels	0.17–0.24	24
C22E	1.1151	Quenched and tempered steels	0.17–0.24	15
C25	1.0406	Quenched and tempered steels	0.22–0.29	20
C25E	1.0402	Quenched and tempered steels	0.17–0.24	24
C25E	1.0406	Quenched and tempered steels	0.22–0.29	20
C25E	1.1158	Quenched and tempered steels	0.22–0.29	12
C30E	1.0528	Quenched and tempered steels	0.27–0.34	14
C30E	1.0501	Quenched and tempered steels	0.32–0.39	23
C35	1.0501	Quenched and tempered steels	0.32–0.39	23
C35E	1.0501	Quenched and tempered steels	0.32–0.39	23
C35RR	1.0501	Quenched and tempered steels	0.32–0.39	23
C40E	1.0511	Quenched and tempered steels	0.37–0.44	21
C40E	1.0503	Quenched and tempered steels	0.42–0.5	24
C40E	1.1186	Quenched and tempered steels	0.37–0.44	16
C45	1.0503	Quenched and tempered steels	0.42–0.5	24
C45E	1.0503	Quenched and tempered steels	0.42–0.5	24
C45E	1.0535	Quenched and tempered steels	0.52–0.6	21
C45E	1.0912	Others	0.42–0.5	11
C45R	1.1201	Quenched and tempered steels	0.42–0.5	11
C45RR	1.0503	Quenched and tempered steels	0.42–0.5	24
C50E	1.0535	Quenched and tempered steels	0.52–0.6	21
C50E	1.1206	Quenched and tempered steels	0.47–0.55	17
C50RR	1.0535	Quenched and tempered steels	0.52–0.6	21
C50RR	1.1204	Others	0.52–0.6	5
C50RR	1.1203	Quenched and tempered steels	0.52–0.6	15
C54	1.0535	Quenched and tempered steels	0.52–0.6	21
C55	1.0535	Quenched and tempered steels	0.52–0.6	21
C55E	1.0535	Quenched and tempered steels	0.52–0.6	21
C55E	1.1203	Quenched and tempered steels	0.52–0.6	15
C60	1.0601	Quenched and tempered steels	0.57–0.65	25
C60E	1.0601	Quenched and tempered steels	0.57–0.65	25
C60E	1.1221	Quenched and tempered steels	0.57–0.65	18
C60RR	1.0601	Quenched and tempered steels	0.57–0.65	25
C60RR	1.1211	Spring steels	0.57–0.65	5
C68	1.0612	Others	0.63–0.68	12
C68RR	1.1231	Spring steels	0.65–0.73	18
C70E2U	1.1520	Unalloyed tool steels / carbon steels	0.65–0.75	11
C70E2U	1.1620	Unalloyed tool steels / carbon steels	0.65–0.74	14
C75RR	1.1248	Spring steels	0.7–0.8	11
C90E2U	1.1625	Unalloyed tool steels / carbon steels	0.75–0.85	15
C90E2U	1.1525	Unalloyed tool steels / carbon steels	0.75–0.85	20
C90E2U	1.1830	Unalloyed tool steels / carbon steels	0.8–0.9	10
C90E2U	1.1217	Others	0.85–0.95	6
C90E2U	1.2018	Tool steels for cold work	0.9–1	4
C90RR	1.1217	Others	0.85–0.95	6
C90RR	1.1269	Spring steels	0.8–0.9	14
C90RR	1.2018	Tool steels for cold work	0.9–1	4
CC12	1.0401	Case hardening steels	0.12–0.18	23

This grade’s own name — recorded in our sources as this grade’s own designation under that standard.
Indicative — taken from a published cross-reference table; a close match, not a guarantee of interchangeability. Verify against the mill certificate before ordering.
Withdrawn — designation no longer current — a separate column from the two above, so a name can be same grade and withdrawn at once.