JIS · 2,322 grades

JIS steel grades — 2322 designations — Page 11

Every grade designated under JIS, 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 asserted identity — the same grade under this standard’s own designation. 19 of 50 rows differ and carry an “Indicative” mark.

Also known as

2322 designations

Grade	Material no.	Category	C% by weight	Also inother standards
SCM435H Indicative	1.7220	Quenched and tempered steels	0.3–0.37	24
SCM435HRCH	—	Cold extrusion steels	0.32–0.39	—
SCM435M	—	—	0.33–0.38	1
SCM435RCH	—	Cold extrusion steels	0.33–0.38	—
SCM435TK	—	—	0.33–0.38	—
SCM440 Indicative	1.7225	Quenched and tempered steels	0.38–0.45	25
SCM440 Indicative	—	—	0.38–0.43	4
SCM440 Indicative	—	—	0.38–0.45	4
SCM440H Indicative	1.7225	Quenched and tempered steels	0.38–0.45	25
SCM440H Indicative	1.7220	Quenched and tempered steels	0.3–0.37	24
SCM440HRCH	—	Cold extrusion steels	0.37–0.44	—
SCM440M	—	—	0.38–0.43	1
SCM440RCH	—	Cold extrusion steels	0.38–0.43	—
SCM440TK	—	—	0.38–0.43	—
SCM445	—	—	0.43–0.48	—
SCM445	1.7228	Quenched and tempered steels	0.46–0.54	12
SCM445 Indicative	—	—	0.43–0.48	2
SCM445H	—	—	0.42–0.49	—
SCM445H Indicative	1.8159	Quenched and tempered steels	0.47–0.55	27
SCM445HRCH	—	Cold extrusion steels	0.42–0.49	—
SCM445RCH	—	Cold extrusion steels	0.43–0.48	—
SCM4H	1.7225	Quenched and tempered steels	0.38–0.45	25
SCM822	—	—	0.2–0.25	—
SCM822H	—	—	0.19–0.25	—
SCM822H Indicative	1.7218	Quenched and tempered steels	0.22–0.29	25
SCM822HRCH	—	Cold extrusion steels	0.19–0.25	—
SCM822RCH	—	Cold extrusion steels	0.2–0.25	—
SCMn1 Indicative	1.1170	Quenched and tempered steels	0.25–0.32	16
SCMn1 Indicative	1.1120	Others	0.17–0.23	13
SCMn2	—	Cast steel	0.25–0.35	—
SCMn2 Indicative	1.1170	Quenched and tempered steels	0.25–0.32	16
SCMn2 Indicative	1.1120	Others	0.17–0.23	13
SCMn2 Indicative	1.1167	Quenched and tempered steels	0.32–0.4	17
SCMn2 Indicative	1.1165	Quenched and tempered steels	0.25–0.32	16
SCMn3	—	Cast steel	0.3–0.4	—
SCMn3 Indicative	1.1167	Quenched and tempered steels	0.32–0.4	17
SCMn5	—	Cast steel	0.4–0.5	—
SCMnCr2	—	Cast steel	0.25–0.35	—
SCMnCr3	—	Cast steel	0.3–0.4	—
SCMnCr4	—	Cast steel	0.35–0.45	—
SCMnCrM2	—	Cast steel	0.25–0.35	—
SCMnCrM3	—	Cast steel	0.3–0.4	—
SCMnH Indicative	1.3401	Quenched and tempered steels	1.1–1.3	19
SCMnH1	—	Cast steel	0.9–1.3	—
SCMnH1 Indicative	1.3401	Quenched and tempered steels	1.1–1.3	19
SCMnH11	—	Cast steel	0.9–1.3	—
SCMnH11 Indicative	1.3401	Quenched and tempered steels	1.1–1.3	19
SCMnH11X	—	Cast steel	1.05–1.35	—
SCMnH12	—	Cast steel	1.05–1.35	—
SCMnH2	—	Cast steel	0.9–1.2	—

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.