Steel St4kp (ВСт4кп)

Designation

Name	The value
Name	The value
Designation GOST Cyrillic	Ст4кп
Designation GOST Latin	Ct4kp
Transliteration	St4kp
The chemical elements	4

Name	The value
Name	The value
Designation GOST Cyrillic	ВСт4кп
Designation GOST Latin	BCt4kp
Transliteration	VSt4kp
The chemical elements	4

Description

Steel St4kp used: for the production of corner rolled steel, h-beam, channels, used in steel structures and construction; welded, riveted and bolted structures high strength; light duty parts; tube and pipe; two-headed rails, t-type P5, is designed for ground and suspended tracks; crutches accuracy class, designed for fastening of rails to wooden sleepers and bars.

Note

The degree of deoxidation - KP.

Standards

Name	Code	Standards
Name	Code	Standards
Sheets and stripes	В23	GOST 14918-80, GOST 16523-97, GOST 16523-89, GOST 16523-70, GOST 103-2006
Pipes steel and connecting parts to them	В62	GOST 3262-75, GOST 8639-82, GOST 8642-68, GOST 8644-68, GOST 8645-68, GOST 8646-68, GOST 10704-91, GOST 10705-80, GOST 10707-80, GOST 13663-86, GOST 13664-68, TU 14-3-1160-83, TU 14-3-1428-86, TU 1373-013-02949352-2003
Rails. Lining. Lining. Crutches	В42	GOST 3280-84, GOST 5812-82, GOST 7056-77, GOST 8142-89, GOST 8194-75, GOST 12135-75, GOST 16277-93, GOST 22343-90
Tapes	В24	GOST 3560-73, GOST 6009-74, STP М309-74
Classification, nomenclature and general norms	В20	GOST 380-2005
Sectional and shaped rolling	В22	GOST 5422-73, GOST 5781-82, GOST 8239-89, GOST 8240-97, GOST 8278-83, GOST 8281-80, GOST 8282-83, GOST 8283-93, GOST 8509-93, GOST 8510-86, GOST 9234-74, GOST 11474-76, GOST 19240-73, GOST 19425-74, GOST 535-2005, GOST 2590-2006, GOST 2591-2006, GOST 2879-2006, OST 5.9086-85, OST 5.9087-84, TU 14-2-341-78
Bulls. Blanks. Slabs	В31	OST 3-1686-90, TU 14-1-4944-90
Metal forming. Forgings	В03	OST 5Р.9125-84
Sheets and stripes	В33	TU 14-1-3579-83, TU 14-1-4431-88
Sectional and shaped rolling	В32	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	0.18-0.27	≤0.05	≤0.04	0.4-0.7	≤0.3	≤0.05	≤0.3	The 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 characteristics

Section, mm	s_T\|s_0,2, MPa	σ_B, MPa	d₅, %	d₄
Section, mm	s_T\|s_0,2, MPa	σ_B, MPa	d₅, %	d₄
Longitudinal electric-welded pipes (Dy=10-530 mm) in the delivery condition. Listed marsvolta base metal
-	≥245	≥412	≥21	-
Pipe electric-welded profile in the delivery state according to GOST 13663-86 (samples)
-	-	≥372	≥10	-
-	≥245	≥412	≥21	-
The hot rolled shapes in the state of delivery
≤20	≥255	400-510	≥25	-
20-40	≥245	400-510	≥24	-
40-100	≥235	400-510	≥22	-
100	≥225	400-510	≥22	-
Hot-rolled sheet in the delivery condition. Group strength ОК400В
≤2	-	400-680	-	≥17
2-3.9	-	400-680	-	≥19
Cold-rolled sheet in the delivery condition. Group strength ОК400В
≤2	-	400-680	-	≥19
2-3.9	-	400-680	-	≥21

Description mechanical marks

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

Technological properties

Name	The value
Name	The value
Weldability	Welded is limited.
Propensity to temper brittleness	tend not
Forging temperature	Start - 1200 °C, the end - 850 °C.
Flock-sensitive sensitivity	not sensitive
Workability by cutting	Under HB 152 Kn TV.SPL.=1.7 Kn b.St.=1.7

Steel St4kp (ВСт4кп)

Designation

Description

Note

Standards

Chemical composition

Mechanical characteristics

Description mechanical marks

Technological properties

Our consultant will save your time

Subscription

Steel St4kp (ВСт4кп)

Designation

Description

Note

Standards

Chemical composition

Mechanical characteristics

Description mechanical marks

Technological properties

Payment ON-LINE

Our consultant will save your time

Subscription