St3sp(ВСт3сп) Structural carbon steel of ordinary quality

Steelun Designation of St3sp(ВСт3сп) Structural carbon steel of ordinary quality:

Name The value
Designation GOST Cyrillic Ст3сп
Designation GOST Latin Ct3cp
Transliteration St3sp
By chemical elements 3
Name The value
Designation GOST Cyrillic ВСт3сп
Designation GOST Latin BCt3cp
Transliteration VSt3sp
By chemical elements 3

Description Steelun of St3sp(ВСт3сп) Structural carbon steel of ordinary quality:

Steel st3sp(ВСт3сп) is used: for the manufacture of expanded metal sheets, load-bearing elements of welded and nesvorny structures and components operating at positive temperatures; shaped and flat rolled (5th category) for load-bearing elements of welded structures operating at variable loads: with plate thickness of up to 25 mm in the temperature range from -40 °C to +425 °C, at a thickness of 25 mm rolled over — from -20 °C to +425 °C under the condition of supply with guaranteed weldability; blanks parts of pipeline valves; forgings seniam to 300 mm. strength classes KP 175, KP 195; manufacture of welded transitions, flanges, welded tees and other fittings of pipelines, as with operating temperature of -20 °C to +200 °C; as a base layer in the manufacture of hot-rolled dual-layer corrosion-resistant sheets; hot rolled pan, odnoselchanka and C-shaped profiles for agricultural machinery; profile housing final drive of the tractor; hot rolled profiles for the production of rims for agricultural machines; electric-welded pipes for the manufacture of parts and structures in motovelotehnika; two-headed rails, t-type P5, designed for ground and suspended tracks; steel bent closed welded square and rectangular sections, intended for use in agricultural machinery, tractor and other sectors of the economy; hot-rolled steel sections sheet piling, designed for cellular structures and impervious curtain; crutches accuracy class, designed for fastening of rails to wooden sleepers and rails; solid-rolled rings for different purposes.

Note

The degree of deoxidation — SP.
Long products, flat and rolled sections made strength class with 265-section up to 20 mm When strengthening treatment (reglamentary or controlled rolling or accelerated cooling) comes rolled sections up to 20 mm strength classes 295, 325 and 345.
Steel st3sp provides strength grade sheet, universal broadband rental and roll-formed profiles KP 265 with plate thickness of up to 20 mm without the use of additional hardening treatment.

Steelun Standards of St3sp(ВСт3сп) Structural carbon steel of ordinary quality:

Name Code Standards
Sheets and strips В33 GOST 10885-85, TU 108.1273-84, TU 14-1-3579-83, TU 14-1-4912-90, TU 14-1-5032-91, TU 302.02.988-92, TU 14-1-5241-93, TU 14-1-4431-88
Classification, nomenclature and General rules В20 GOST 19281-89, GOST 380-2005
Tape В34 GOST 19851-74
Steel pipes and fittings to them В62 GOST 3262-75, GOST 8696-74, GOST 10704-91, GOST 10705-80, GOST 10706-76, GOST 10707-80, GOST 12132-66, GOST 20295-85, GOST 24950-81, HUNDRED 79814898 105-2008, TU 14-3-1160-83, TU 14-3-1428-86, TU 14-3-1473-87, TU 14-3-377-87, TU 1380-001-08620133-93, TU 1380-001-08620133-05, TU 14-3Р-56-2001, TU 1303-002-08620133-01, TU 1373-013-02949352-2003
Tape В24 GOST 3560-73, GOST 6009-74, STP М309-74
Bars and shapes В22 GOST 4781-85, GOST 5267.0-90, 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 10884-94, GOST 11474-76, GOST 12492.1-90, GOST 12492.2-90, GOST 12492.4-90, GOST 12492.5-90, GOST 12492.13-90, GOST 12492.14-90, GOST 19240-73, GOST 19425-74, GOST 19771-93, GOST 19772-93, GOST 25577-83, GOST 26020-83, GOST 30565-98, GOST 535-2005, GOST 30136-95, GOST 2590-2006, GOST 2591-2006, GOST 2879-2006, OST 5.9086-85, OST 5.9087-84, TU 14-2-341-78, TU 14-2-949-91, TU 14-1-5282-94, HUNDRED АСЧМ 20-93, TU 14-1-5283-94, TU 14-105-568-93, TU 14-1-5254-94
Rails. Lining. Lining. Crutches В42 GOST 5812-82, GOST 8142-89, GOST 16277-93
Sheets and strips В23 GOST 82-70, GOST 8568-77, GOST 14637-89, GOST 14918-80, GOST 16523-97, GOST 19903-74, GOST 16523-89, GOST 16523-70, GOST 103-2006, GOST 19903-90, TU 36.26.11-5-89, TU 108-1126-82, TU 14-1-3023-80, TU 14-1-4632-93
Processing of metals by pressure. Forgings В03 GOST 8479-70, TU 108-11-908-87, ST ЦКБА 010-2004
Bars and shapes В32 OST 1 92049-76, TU 14-105-454-86, TU 14-2-849-89, TU 14-11-245-88, TU 14-1-1271-75, TU 14-136-367-2008
Blanks. Of the workpiece. Slabs В31 OST 3-1686-90, TU 14-1-4944-90
Welding and cutting metals. Soldering, riveting В05 OST 36-58-81, OST 26-260.453-92
Thermal and thermochemical treatment of metals В04 ST ЦКБА 026-2005
Test methods. Packing. Marking В29 TU 14-106-485-99

Chemical composition Steelun of St3sp(ВСт3сп) Structural carbon steel of ordinary quality:

Standard C S P Mn Cr Si Ni Fe Cu N As
TU 108.1273-84 0.14-0.22 ≤0.05 ≤0.04 0.4-0.65 ≤0.3 0.15-0.3 ≤0.3 Rest ≤0.3 ≤0.012 ≤0.08
TU 302.02.988-92 0.14-0.22 ≤0.045 ≤0.035 0.4-0.65 ≤0.3 0.15-0.3 ≤0.3 Rest ≤0.3 ≤0.008 ≤0.08
GOST 380-2005 0.14-0.22 ≤0.05 ≤0.04 0.4-0.65 ≤0.3 0.15-0.3 ≤0.3 Rest ≤0.3 ≤0.012 ≤0.08
Fe is the basis.
According to GOST 380-2005, the nitrogen content is indicated for steel smelted in electric furnaces. In open-hearth and converter steels, the content of N≤0.010%.
According to TU 108.1273-84, deviations in nickel + 0.20%, copper + 0.20% are allowed.

Steelun Mechanical properties of St3sp(ВСт3сп) Structural carbon steel of ordinary quality:

Section, mm sT|s0,2, MPa σU, MPa d5, % d4 y, % KCU, kJ/m2 HB, MPa
Longitudinal electric-welded pipes (Dy=10-530 mm) in the delivery condition. Listed marsvolta base metal
≥225 ≥372 ≥22
Ring forged in OST 1 92049-76. Normalization
100 ≥215 ≥355 ≥16
Longitudinal electric-welded pipes TU 1303-002-08620133-01 in the delivery condition (in cross-section shows the thickness of the wall)
20-25 ≥235 370-480 ≥25 ≥290
6-20 ≥245 370-480 ≥26 ≥290
Forgings. Normalization
100-300 ≥175 ≥355 ≥24 ≥50 ≥590 101-143
100 ≥175 ≥355 ≥28 ≥55 ≥640 101-143
100-300 ≥195 ≥390 ≥23 ≥50 ≥540 111-156
100 ≥195 ≥390 ≥26 ≥55 ≥590 111-156
The hot rolled plate, long products and fittings as supplied
10-20 ≥245 370-480 ≥26
20-40 ≥235 370-480 ≥25
40-100 ≥225 370-480 ≥23
10 ≥245 380-490 ≥26 ≥1080
100 ≥205 370-480 ≥23
Blank pieces of pipe fittings. Extract at 900-950 °C (2.5-4.0 hours depending on the thickness and weight of the workpiece) annealing in air
300 ≥195 ≥390 ≥23 ≥50 ≥540 111-156
Hot-rolled sheet in the state of delivery (specified group strength)
≤2 ≥235 360-530 ≥20
2-3.9 ≥235 360-530 ≥22
≤2 ≥255 370-530 ≥20
2-3.9 ≥255 370-530 ≥22
Cold-rolled sheet in the state of delivery (specified group strength)
≤2 ≥235 360-530 ≥22
2-3.9 ≥235 360-530 ≥24
≤2 ≥255 370-530 ≥22
2-3.9 ≥255 370-530 ≥24
Rolled plates as supplied by TU 14-1-5241-93. Quenching + Tempering (samples transverse)
20-40 ≥235 370-480 ≥25
40-50 ≥225 370-480 ≥23
8-20 ≥245 370-480 ≥26
Bars and shapes of high-strength steel in the delivery state according to the GOST 19281-89 (specified strength class)
≤20 ≥265 ≥430 ≥21
Hot rolled billet dimensions mm 140х120
≥220 ≥445 ≥33 ≥59
≥205
≥180 ≥285 ≥34 ≥80
Sheet and structural steel in hot-rolled condition up to a thickness of 30 mm
205-340 420-520 28-37 56-68
215-285
205-265
155-255 275-490 34-43 60-73
125-175 215-390 36-43 60-73
A sample with a diameter of 6 mm, length 30 mm forged and normalized. Strain rate 16 mm/min, strain rate of 0.009 1/s
≥73 ≥100 ≥57 ≥96
≥51 ≥63 ≥95 ≥95
≥38 ≥65 ≥84 ≥100
≥25 ≥43 ≥79 ≥100
≥19 ≥31 ≥80 ≥100
≥14 ≥25 ≥84 ≥100

Description mechanical marks steelun of St3sp(ВСт3сп) 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
y The relative narrowing
KCU Toughness
HB Brinell hardness number

Steelun Physical characteristics of St3sp(ВСт3сп) Structural carbon steel of ordinary quality:

Temperature Е, HPa l, W/(m · °C)
20 194
100 192 55
200 187 54
300 183 50
400 178 45
500 167 39
600 159 34
700 146 30
800 120
900 99

A description of the physical symbols steelun of St3sp(ВСт3сп) Structural carbon steel of ordinary quality:

Name Description
Е The normal elasticity modulus
r Density
l Coefficient of thermal conductivity
R UD. the resistivity
a The coefficient of linear expansion

Steelun Technological properties of St3sp(ВСт3сп) Structural carbon steel of ordinary quality:

Name The value
Weldability Welded without restriction; welding methods: SMAW, ADS submerged arc and gas protection electroslag welding, the CCC. For thickness of more than 36 mm recommended heating and subsequent heat treatment. For manual arc welding using electrodes MP-3 or УОНИ13/45A; for automatic submerged arc – welding wire SV-08A, SV-08ГА or SV-10G2 with flux an-348A; for welding in protective gases Ar and CO2 welding wire SV-08G2S.
The tendency to temper brittleness Tend not.
The temperature of forging Beginning – 1300 °C, the end – 750 °C. air Cooling.
Flock-sensitive sensitivity not sensitive.
Machinability In the hot rolled condition when blower SB 124 and HB=400 MPa Kn TV.SPL.=1,8 Kn b.St.=1,6.

You might also like

Steel Standards

19KHGN Alloy structural steel

Steelun Designation of 19KHGN Alloy structural steel: Name The value Designation GOST Cyrillic 19ХГН Designation GOST Latin 19XGH Transliteration 19HGN By chemical elements 19CrMnН Description Steelun of 19KHGN Alloy structural steel: 19KHGN steel

Steel Grades

15ХМФА Alloy structural steel

Steelun Designation of 15ХМФА Alloy structural steel: Name The value Designation GOST Cyrillic 15ХМФА Designation GOST Latin 15XMFA Transliteration 15HMFA By chemical elements 15CrMoV Name The value Designation GOST Cyrillic 15ХМФ

Steel Grades

16ХГТА (ЭИ274) Alloy structural steel

Steelun Designation of 16ХГТА (ЭИ274) Alloy structural steel: Name The value Designation GOST Cyrillic 16ХГТА Designation GOST Latin 16XGTA Transliteration 16HGTA By chemical elements 16CrMnTi Name The value Designation GOST Cyrillic