BS · 1,547 grades

BS steel grades — 1547 designations — Page 18

Every grade designated under BS, 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. Unless marked, every name here is an indicative cross-reference, not an asserted identity — the grades are close, not interchangeable. 4 of 50 rows differ and carry a “This grade’s own name” mark.

Also known as

1547 designations

Grade	Material no.	Category	C% by weight	Also inother standards
708M20	1.7218	Quenched and tempered steels	0.22–0.29	25
708M20	1.3566	Others	0.12–0.18	8
708M25	1.7218	Quenched and tempered steels	0.22–0.29	25
708M32 This grade’s own name	1.7226	Others	0.3–0.37	9
708M32	1.7220	Quenched and tempered steels	0.3–0.37	24
708M40 This grade’s own name	1.7225	Quenched and tempered steels	0.38–0.45	25
708M40	1.7228	Quenched and tempered steels	0.46–0.54	12
708M40	1.7223	Steels for surface hardening	0.38–0.44	13
708M40	1.6511	Quenched and tempered steels	0.32–0.4	18
708M40	1.7227	Quenched and tempered steels	0.38–0.45	15
708M40	1.2330	Others	0.32–0.37	8
708M40 / 42CrMo4	1.7225	Quenched and tempered steels	0.38–0.45	25
708M40 EN 19A	1.7225	Quenched and tempered steels	0.38–0.45	25
708M50	1.7228	Quenched and tempered steels	0.46–0.54	12
709M40	1.7225	Quenched and tempered steels	0.38–0.45	25
709M40	1.7227	Quenched and tempered steels	0.38–0.45	15
722M24	1.8515	Nitriding steels	0.28–0.35	8
722M24	1.7361	Quenched and tempered steels	0.28–0.35	7
722M24	1.0038	Unalloyed structural steels	≤ 0.17	26
725LN	1.4466	Stainless steels	≤ 0.02	6
735A30	1.2241	Tool steels for cold work	0.47–0.55	9
735A30	1.8159	Quenched and tempered steels	0.47–0.55	27
735A50	1.8159	Quenched and tempered steels	0.47–0.55	27
735A50 przybliż.	1.2235	Tool steels for cold work	0.75–0.85	13
735A51	1.8159	Quenched and tempered steels	0.47–0.55	27
735A54	1.8159	Quenched and tempered steels	0.47–0.55	27
735h51	1.8159	Quenched and tempered steels	0.47–0.55	27
736B	2.4631	High-temperature steels / aviation variant	0.04–0.1	5
738M32 This grade’s own name	1.7220	Quenched and tempered steels	0.3–0.37	24
75Cr1	1.2003	Tool steels for cold work	0.7–0.8	9
75F70	1.8974	Fine-grain steels for cold forming	≤ 0.12	3
762	1.4923	High-temperature steels	0.18–0.24	5
7S1 This grade’s own name	—	—	—	—
7S80	1.4044	Special steels for aviation and aerospace	0.12–0.2	8
7S80	1.4057	Stainless steels	0.12–0.22	17
800/2	EN-JS1080	Others	—	16
801	1.4301	Stainless steels	≤ 0.07	23
801 grade A	1.4948	High-temperature steels	0.04–0.08	8
805H17	1.6523	Case hardening steels	0.17–0.23	18
805H20	1.6523	Case hardening steels	0.17–0.23	18
805H22	1.6523	Case hardening steels	0.17–0.23	18
805M20	1.6523	Case hardening steels	0.17–0.23	18
806M20	1.6523	Case hardening steels	0.17–0.23	18
80CS	1.1269	Spring steels	0.8–0.9	14
80HS	1.1269	Spring steels	0.8–0.9	14
815M17	1.6566	Case hardening steels	0.14–0.2	7
816M40	1.6511	Quenched and tempered steels	0.32–0.4	18
816M40	1.6510	Others	0.35–0.43	7
816M40	1.6582	Quenched and tempered steels	0.3–0.38	25
817A37	1.6511	Quenched and tempered steels	0.32–0.4	18

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.