ВСт4кп Structural carbon steel of ordinary quality

Steelun Designation of ВСт4кп Structural carbon steel of ordinary quality:

Name The value
Designation GOST Cyrillic Ст4кп
Designation GOST Latin Ct4kp
Transliteration St4kp
By chemical elements 4
Name The value
Designation GOST Cyrillic ВСт4кп
Designation GOST Latin BCt4kp
Transliteration VSt4kp
By chemical elements 4

Description Steelun of ВСт4кп Structural carbon steel of ordinary quality:

Steel ВСт4кп 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.

Steelun Standards of ВСт4кп Structural carbon steel of ordinary quality:

Name Code Standards
Sheets and strips В23 GOST 14918-80, GOST 16523-97, GOST 16523-89, GOST 16523-70, GOST 103-2006
Steel pipes and fittings 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
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 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
Blanks. Of the workpiece. Slabs В31 OST 3-1686-90, TU 14-1-4944-90
Processing of metals by pressure. Forgings В03 OST 5Р.9125-84
Sheets and strips В33 TU 14-1-3579-83, TU 14-1-4431-88
Bars and shapes В32 TU 14-11-245-88, TU 14-136-367-2008

Chemical composition Steelun of ВСт4кп Structural carbon steel of ordinary quality:

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 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%.

Steelun Mechanical properties of ВСт4кп Structural carbon steel of ordinary quality:

Section, mm sT|s0,2, MPa σU, MPa d5, % d4
Section, mm sT|s0,2, MPa σU, 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 steelun of ВСт4кп Structural carbon steel of ordinary quality:

Name Description
sT|s0,2 Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2%
σU Limit short-term strength
d5 Elongation after rupture
d4 Elongation after rupture

Steelun Technological properties of ВСт4кп Structural carbon steel of ordinary quality:

Name The value
Weldability Welded is limited.
The tendency to temper brittleness tend not
The temperature of forging Start – 1200 °C, the end – 850 °C.
Flock-sensitive sensitivity not sensitive
Machinability Under HB 152 Kn TV.SPL.=1.7 Kn b.St.=1.7

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