UNI · 671 grades

UNI steel grades — 671 designations — Page 9

Every grade designated under UNI, 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

671 designations

Grade	Material no.	Category	C% by weight	Also inother standards
Fe680	1.0070	Unalloyed structural steels	—	16
Fe680	1.0070	Unalloyed structural steels	—	16
Fe690	1.0070	Unalloyed structural steels	—	16
Fe690	1.0070	Unalloyed structural steels	—	16
FeE235	1.0345	Heat-resistant structural steels	≤ 0.16	18
FeE24KR	1.0111	Unalloyed structural steels	≤ 0.16	5
FeE275KGN	1.0490	Fine-grain structural steels	≤ 0.18	6
FeE275KGTM	1.8818	Others	≤ 0.13	1
FeE275KTN	1.0491	Fine-grain structural steels	≤ 0.16	5
FeE275KTTM	1.8819	Others	≤ 0.13	1
FeE27KR	1.0423	Heat-resistant structural steels	≤ 0.19	6
FeE31KR	1.0437	Others	≤ 0.2	8
FeE355-2	1.0565	Fine-grain structural steels	≤ 0.18	7
FeE355-3	1.0566	Fine-grain structural steels	≤ 0.18	11
FeE355KG	1.8823	Others	≤ 0.14	5
FeE355KG	1.0562	Fine-grain structural steels	≤ 0.18	18
FeE355KGN	1.0545	Fine-grain structural steels	≤ 0.2	9
FeE355KGTM	1.8823	Others	≤ 0.14	5
FeE355KKW	1.0562	Fine-grain structural steels	≤ 0.18	18
FeE355KT	1.8834	Fine-grain structural steels	≤ 0.14	6
FeE355KTN	1.0546	Fine-grain structural steels	≤ 0.18	8
FeE355KTTM	1.8834	Fine-grain structural steels	≤ 0.14	6
FeE355TM	1.0976	Fine-grain steels for cold forming	≤ 0.12	9
FeE35KR	1.0557	Others	≤ 0.2	4
FeE390KG	1.8900	Fine-grain structural steels	≤ 0.2	4
FeE420	1.0570	Unalloyed structural steels	≤ 0.2	22
FeE420	1.0570	Unalloyed structural steels	≤ 0.2	20
FeE420KG	1.8902	Fine-grain structural steels	≤ 0.2	19
FeE420KGN	1.8902	Fine-grain structural steels	≤ 0.2	19
FeE420KW	1.8902	Fine-grain structural steels	≤ 0.2	19
FeE460KG	1.8827	Others	≤ 0.16	5
FeE460KG	1.8905	Fine-grain structural steels	≤ 0.2	14
FeE460KG	1.5218	Others	0.2–0.23	13
FeE460KGN	1.8901	Fine-grain structural steels	≤ 0.2	7
FeE460KGTM	1.8827	Others	≤ 0.16	5
FeE460KGTM	1.8838	Others	≤ 0.16	4
FeE460KT	1.8838	Others	≤ 0.16	4
FeE460KTN	1.8903	Fine-grain structural steels	≤ 0.2	4
FeE460KTTM	1.8838	Others	≤ 0.16	4
FeE490TM	1.0984	Fine-grain steels for cold forming	≤ 0.12	6
FeE560TM	1.0986	Fine-grain steels for cold forming	≤ 0.12	6
FeG400	1.0416	Others	0.15–0.2	17
FeG42	1.0416	Others	0.15–0.2	17
FeG45	1.0443	Others	≤ 0.11	13
FeG49-1	1.0551	Unalloyed structural steels	≤ 0.24	10
FeP01	1.0330	Unalloyed structural steels	≤ 0.12	17
FeP02	1.0347	Unalloyed structural steels	≤ 0.1	12
FeP02	1.0338	Unalloyed structural steels	≤ 0.08	18
FeP04	1.0338	Unalloyed structural steels	≤ 0.08	18
FeP11	1.0332	Unalloyed structural steels	≤ 0.12	16

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.