Steel St3ps (ВСт3пс)

Designation

Name The value
Designation GOST Cyrillic Ст3пс
Designation GOST Latin Ct3pc
Transliteration St3ps
By chemical elements 3
Name The value
Designation GOST Cyrillic ВСт3пс
Designation GOST Latin BCt3pc
Transliteration VSt3ps
By chemical elements 3

Description

St3ps steel is used: for the production of shaped and sheet rolled (5th category) with a thickness of 10 mm. used for load-bearing elements of welded structures operating at variable loads at temperatures from -40 °C to +425 °C; rent from 10 to 25 mm. — bearing elements of welded structures operating at temperatures from — 40 °C to +425°C under the condition of supply with guaranteed weldability; casting parts of pipe fittings; forgings seniam to 300 mm. strength classes KP 175, KP 195; expanded metal sheets; hot rolled pan and odnoselchanka 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, is 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 bars.

Note

The degree of deoxidation — PS.

Standards

Name Code Standards
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, TU 14-3-1160-83, TU 14-3-1428-86, TU 1380-001-08620133-05, TU 14-3Р-56-2001, TU 14-3-377-99, 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 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 10551-75, GOST 10884-94, GOST 11474-76, GOST 12492.1-90, GOST 12492.2-90, GOST 12492.4-90, GOST 12492.5-90, 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 14-1-3094-80, TU 14-2-341-78, TU 14-2-853-89, 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 14-1-3023-80
Processing of metals by pressure. Forgings В03 GOST 8479-70, ST ЦКБА 010-2004
Welding and cutting metals. Soldering, riveting В05 OST 26-260.453-92
Blanks. Of the workpiece. Slabs В31 OST 3-1686-90, TU 14-1-4944-90
Thermal and thermochemical treatment of metals В04 ST ЦКБА 026-2005
Sheets and strips В33 TU 14-1-3579-83, TU 14-1-4431-88
Bars and shapes В32 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
Test methods. Packing. Marking В29 TU 14-106-485-99
Low carbon steel wire В71 TU 14-4-1813-97

Chemical composition

Standard C S P Mn Cr Si Ni Fe Cu N As
GOST 380-2005 0.14-0.22 ≤0.05 ≤0.04 0.4-0.65 ≤0.3 0.05-0.15 ≤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 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 - - - -
Forgings. Normalization
100-300 ≥175 ≥355 ≥24 - ≥50 ≥590 101-143
100 ≥175 ≥355 ≥28 - ≥55 ≥690 101-143
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
≤20 ≥245 370-480 ≥26 - - - -
20-40 ≥235 370-480 ≥25 - - - -
40-100 ≥225 370-480 ≥23 - - - -
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 ≥175 ≥355 ≥24 - ≥50 ≥590 101-143
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 - - -

Description mechanical marks

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

Physical characteristics

Temperature Е, HPa
700 153

A description of the physical symbols

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

Technological properties

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.
Склонность к отпускной хрупкости 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.