GB · 1,318 grades

GB steel grades — 1318 designations — Page 10

Every grade designated under GB, 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. 18 of 50 rows differ and carry a “This grade’s own name” mark.

Also known as

1318 designations

Grade	Material no.	Category	C% by weight	Also inother standards
2Cr25N	1.4749	Heat resistant steels	0.15–0.2	10
2Cr25N	1.4762	Heat resistant steels	≤ 0.12	12
2Cr25Ni20	1.4841	Heat resistant steels	≤ 0.2	17
2Cr25Ni20	1.4843	Resistance heating alloys	≤ 0.2	9
2CrNi3MoAl This grade’s own name	—	—	0.2–0.3	—
2CrNiMoMnV This grade’s own name	—	—	0.24–0.3	—
30	1.0530	Others	0.3–0.35	7
30	1.1143	Quenched and tempered steels	0.3–0.34	7
30	1.1178	Quenched and tempered steels	0.27–0.34	13
30	1.1179	Quenched and tempered steels	0.27–0.34	8
30	1.9416	Quenched and tempered steels	0.28–0.34	7
30	1.0528	Quenched and tempered steels	0.27–0.34	14
30Cr	1.7030	Quenched and tempered steels	0.24–0.31	12
30Cr13 This grade’s own name	—	—	0.26–0.35	—
30Cr2Ni2Mo	1.6580	Quenched and tempered steels	0.26–0.34	15
30Cr2Ni4Mo This grade’s own name	—	—	0.26–0.33	—
30CrA This grade’s own name	—	—	0.27–0.34	—
30CrMn	1.7218	Quenched and tempered steels	0.22–0.29	25
30CrMnSi This grade’s own name	—	—	0.28–0.34	—
30CrMnSiA This grade’s own name	—	—	0.28–0.34	—
30CrMo	1.7218	Quenched and tempered steels	0.22–0.29	25
30CrMo	1.7214	Special steels for aviation and aerospace	0.22–0.29	9
30CrMo	1.7216	Low-temperature structural steels	0.27–0.34	9
30CrMo	1.7220	Quenched and tempered steels	0.3–0.37	24
30CrMo	1.7230	Others	0.3–0.37	8
30CrMo	1.3567	Others	0.17–0.23	7
30CrMoA This grade’s own name	—	—	0.26–0.33	—
30CrNi3 This grade’s own name	—	—	0.27–0.33	—
30CrNiMo This grade’s own name	—	—	0.28–0.33	—
30Mn	1.1170	Quenched and tempered steels	0.25–0.32	16
30Mn2	1.1170	Quenched and tempered steels	0.25–0.32	16
30Mn2	1.1167	Quenched and tempered steels	0.32–0.4	17
30Mn2	1.1173	Quenched and tempered steels	0.27–0.34	7
30Mn2	1.1165	Quenched and tempered steels	0.25–0.32	16
30Mn2MoW This grade’s own name	—	—	0.27–0.34	—
30W4Cr2V This grade’s own name	—	—	0.26–0.34	—
30W4Cr2VA This grade’s own name	—	—	0.26–0.34	—
30WCrV9	1.2581	Tool steels for hot work	0.25–0.35	18
32Cr13Mo This grade’s own name	—	—	0.28–0.35	—
33Cr23Ni8Mn3N This grade’s own name	—	—	0.28–0.38	—
34Cr2Ni2Mo	1.6582	Quenched and tempered steels	0.3–0.38	25
34CrMo4 This grade’s own name	1.7220	Quenched and tempered steels	0.3–0.37	24
34CrNi2 This grade’s own name	—	—	0.3–0.37	—
34CrNi3Mo	1.6582	Quenched and tempered steels	0.3–0.38	25
34CrNiMo	1.6582	Quenched and tempered steels	0.3–0.38	25
35	1.1150	Others	0.36–0.4	5
35	1.1181	Quenched and tempered steels	0.32–0.39	20
35	1.9501	Others	0.35–0.42	4
35	1.0501	Quenched and tempered steels	0.32–0.39	23
35 This grade’s own name	1.1172	Cold extrusion steels	0.32–0.39	5

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.