JIS · 2,322 grades

JIS steel grades — 2322 designations — Page 22

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 indicative cross-reference, not an asserted identity — the grades are close, not interchangeable. 16 of 50 rows differ and carry a “This grade’s own name” mark.

Also known as

2322 designations

Grade	Material no.	Category	C% by weight	Also inother standards
SM490YB	1.0570	Unalloyed structural steels	≤ 0.2	22
SM490YB	1.0570	Unalloyed structural steels	≤ 0.2	20
SM490YB	1.8902	Fine-grain structural steels	≤ 0.2	19
SM490YB	1.0562	Fine-grain structural steels	≤ 0.18	18
SM50A	1.0570	Unalloyed structural steels	≤ 0.2	22
SM50A	1.0570	Unalloyed structural steels	≤ 0.2	20
SM520B	1.0596	Unalloyed structural steels	≤ 0.2	4
SM520B	1.8901	Fine-grain structural steels	≤ 0.2	7
SM520B	1.0570	Unalloyed structural steels	≤ 0.2	22
SM520B	1.0570	Unalloyed structural steels	≤ 0.2	20
SM520B	1.8905	Fine-grain structural steels	≤ 0.2	14
SM520B	1.5218	Others	0.2–0.23	13
SM520B	1.0044	Unalloyed structural steels	≤ 0.21	26
SM520C This grade’s own name	—	Unalloyed structural steels	≤ 0.2	1
SM520C	1.0570	Unalloyed structural steels	≤ 0.2	22
SM520C	1.0570	Unalloyed structural steels	≤ 0.2	20
SM520C	1.8905	Fine-grain structural steels	≤ 0.2	14
SM520C	1.5218	Others	0.2–0.23	13
SM53B	1.0426	Aging resistant steels	0.08–0.2	17
SM53C	1.0426	Aging resistant steels	0.08–0.2	17
SM53C	1.0570	Unalloyed structural steels	≤ 0.2	22
SM53C	1.0570	Unalloyed structural steels	≤ 0.2	20
SM570 This grade’s own name	—	Unalloyed structural steels	≤ 0.18	1
SM570	1.8827	Others	≤ 0.16	5
SM570	1.0060	Unalloyed structural steels	—	21
SM570	1.0060	Unalloyed structural steels	—	21
SM58	1.8908	Others	≤ 0.2	3
SM58	1.0060	Unalloyed structural steels	—	21
SM58	1.0060	Unalloyed structural steels	—	21
SMA400AP This grade’s own name	—	Weathering steels	≤ 0.18	—
SMA400AW This grade’s own name	—	Weathering steels	≤ 0.18	—
SMA400BP This grade’s own name	—	Weathering steels	≤ 0.18	—
SMA400BW This grade’s own name	—	Weathering steels	≤ 0.18	—
SMA400CP This grade’s own name	—	Weathering steels	≤ 0.18	—
SMA400CW This grade’s own name	—	Weathering steels	≤ 0.18	—
SMA490AP This grade’s own name	—	Weathering steels	≤ 0.18	—
SMA490AW This grade’s own name	—	Weathering steels	≤ 0.18	—
SMA490BP This grade’s own name	—	Weathering steels	≤ 0.18	—
SMA490BW This grade’s own name	—	Weathering steels	≤ 0.18	—
SMA490CP This grade’s own name	—	Weathering steels	≤ 0.18	—
SMA490CW This grade’s own name	—	Weathering steels	≤ 0.18	—
SMA490CW	1.8961	Weathering steels	≤ 0.13	3
SMA50AW	1.8959	Weathering steels	≤ 0.16	10
SMA50CP	1.8965	Weathering steels	≤ 0.16	3
SMA570P This grade’s own name	—	Weathering steels	≤ 0.18	—
SMA570W This grade’s own name	—	Weathering steels	≤ 0.18	—
SMA570W	1.8963	Weathering steels	≤ 0.16	9
SMn3	1.0762	Free cutting steels	0.4–0.48	20
SMn420	1.1133	Quenched and tempered steels	0.17–0.23	20
SMn420	1.1160	Low-temperature structural steels	0.18–0.25	6

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.