Steel St1sp

Designation

Name	The value
Name	The value
Designation GOST Cyrillic	Ст1сп
Designation GOST Latin	Ct1cp
Transliteration	St1sp
By chemical elements	1

Description

St1sp steel is used: for the manufacture of parts with high viscosity and low hardness, the anchor bolts connecting the casings, fasteners irresponsible destination, rivets, non-critical valves; electrically welded tubes; two-headed rails, t-type P5, is designed for ground and suspended tracks.

Note

The degree of deoxidation — SP.

Standards

Name	Code	Standards
Name	Code	Standards
Tape	В34	GOST 19851-74
Steel pipes and fittings to them	В62	GOST 3262-75, GOST 10704-91, GOST 10705-80, GOST 20295-85, GOST 24950-81, TU 14-3-1160-83, TU 14-3-1428-86, TU 1373-013-02949352-2003
Tape	В24	GOST 3560-73, GOST 6009-74, STP М309-74
Classification, nomenclature and General rules	В20	GOST 380-2005
Bars and shapes	В22	GOST 5422-73, GOST 5781-82, GOST 8278-83, GOST 8281-80, GOST 8282-83, GOST 8283-93, GOST 9234-74, GOST 11474-76, GOST 19240-73, GOST 19425-74, GOST 30565-98, GOST 535-2005, GOST 30136-95, OST 5.9086-85, OST 5.9087-84, TU 14-2-341-78, TU 14-1-5283-94
Sheets and strips	В23	GOST 8568-77, GOST 14918-80, GOST 16523-97, GOST 16523-89, GOST 16523-70
Blanks. Of the workpiece. Slabs	В31	OST 3-1686-90, TU 14-1-4944-90
Sheets and strips	В33	TU 14-1-3579-83, TU 14-1-4431-88
Bars and shapes	В32	TU 14-2-849-89, TU 14-11-245-88, TU 14-136-367-2008

Chemical composition

Standard	C	S	P	Mn	Cr	Si	Ni	Fe	Cu	N	As
Standard	C	S	P	Mn	Cr	Si	Ni	Fe	Cu	N	As
GOST 380-2005	0.06-0.12	≤0.05	≤0.04	0.25-0.5	≤0.3	0.15-0.3	≤0.3	Rest	≤0.3	≤0.012	≤0.08

Fe is the basis.
The nitrogen content is indicated for steel smelted in electric furnaces. In open-hearth and converter steels, the content of N≤0.010%.

Mechanical properties

Section, mm	s_T\|s_0,2, MPa	σ_U, MPa	d₅, %	d₄
Section, mm	s_T\|s_0,2, MPa	σ_U, MPa	d₅, %	d₄
The hot rolled shapes in the state of delivery
≤10	≥205	315-410	≥34	-
≥100	≥175	315-410	≥31	-
10-20	≥205	315-410	≥34	-
20-40	≥195	315-410	≥33	-
40-100	≥185	315-410	≥31	-
Sheet as supplied. Without heat treatment
≤4	190-220	320-420	≥30	-
Hot-rolled sheet in the delivery condition. Group strength ОК300В
≤2	≥215	300-480	-	≥21
2-3.9	≥215	300-480	-	≥23
Cold-rolled sheet in the delivery condition. Group strength ОК300В
≤2	≥215	300-480	-	≥24
2-3.9	≥215	300-480	-	≥26

Description mechanical marks

Name	Description
Name	Description
s_T\|s_0,2	Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2%
σ_U	Limit short-term strength
d₅	Elongation after rupture
d₄	Elongation after rupture