SRPS · 178 grades

SRPS steel grades — 178 designations — Page 3

Every grade designated under SRPS, 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

178 designations

Grade	Material no.	Category	C% by weight	Also inother standards
Č.4740	1.2327	Tool steels for cold work	0.83–0.9	2
Č.4742	1.2312	Tool steels for cold work	0.35–0.45	5
Č.4750	1.2601	Tool steels for cold work	1.55–1.75	15
Č.4751	1.2343	Tool steels for hot work	0.33–0.41	20
Č.4752	1.2606	Tool steels for hot work	0.32–0.4	8
Č.4753	1.2344	Tool steels for hot work	0.35–0.42	20
Č.4755	1.2631	Tool steels for cold work	0.45–0.55	2
Č.4756	1.2363	Tool steels for cold work	0.95–1.05	16
Č.4757	1.2345	Tool steels for hot work	0.48–0.53	3
Č.4770	1.4116	Stainless steels	0.45–0.55	6
Č.4770.1	1.4105	Stainless steels	≤ 0.08	10
Č.4782	1.7227	Quenched and tempered steels	0.38–0.45	15
Č.4783	1.7226	Others	0.3–0.37	9
Č.4784	1.8509	Nitriding steels	0.38–0.45	16
Č.4790	1.4104	Stainless steels	0.1–0.17	13
Č.4830	1.8159	Quenched and tempered steels	0.47–0.55	27
Č.4831	1.8161	Quenched and tempered steels	0.55–0.62	4
Č.4835	1.2208	Tool steels for cold work	0.28–0.35	4
Č.4840	1.2063	Tool steels for cold work	1.4–1.6	4
Č.4844	1.2235	Tool steels for cold work	0.75–0.85	13
Č.4850	1.2379	Tool steels for cold work	1.45–1.6	20
Č.4851	1.2376	Tool steels for cold work	0.92–1	1
Č.4870	1.4871	Valve steels	0.48–0.58	17
Č.4970	1.4762	Heat resistant steels	≤ 0.12	12
Č.4970.1	1.4510	Stainless steels	≤ 0.05	14
Č.4972	1.4724	Heat resistant steels	≤ 0.12	15
Č.4973	1.4742	Heat resistant steels	≤ 0.12	17
Č.4974	1.4713	Heat resistant steels	≤ 0.12	7
Č.5120	1.5622	Low-temperature structural steels	≤ 0.18	6
Č.5160	1.3912	Controlled-expansion nickel-iron alloys	—	4
Č.5161	1.3917	Controlled-expansion nickel-iron alloys	≤ 0.05	4
Č.5420	1.5919	Case hardening steels	0.12–0.18	11
Č.5421	1.5920	Case hardening steels	0.15–0.2	6
Č.5425	1.5732	Case hardening steels	0.1–0.17	13
Č.5426	1.5752	Case hardening steels	0.14–0.2	15
Č.5426	1.5752	Case hardening steels	0.14–0.2	15
Č.5427	1.5860	Case hardening steels	0.1–0.17	3
Č.5430	1.6511	Quenched and tempered steels	0.32–0.4	18
Č.5431	1.6582	Quenched and tempered steels	0.3–0.38	25
Č.5432	1.6580	Quenched and tempered steels	0.26–0.34	15
Č.5434	1.5710	Quenched and tempered steels	0.32–0.4	14
Č.5436	1.5736	Quenched and tempered steels	0.32–0.4	3
Č.5438	1.5755	Quenched and tempered steels	0.27–0.35	9
Č.5439	1.5864	Quenched and tempered steels	0.3–0.4	2
Č.5480	1.6957	Quenched and tempered steels	0.22–0.32	1
Č.5741	1.2713	Tool steels for cold work	0.5–0.6	12
Č.5742	1.2714	Tool steels for hot work	0.5–0.6	15
Č.5743	1.2726	Tool steels for hot work	0.22–0.3	2
Č.6440	1.2419	Tool steels for cold work	1–1.1	16
Č.6441	1.2519	Tool steels for cold work	1.05–1.15	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.