Steel St2sp (ВСт2сп)
Designation
Name | The value |
---|---|
Designation GOST Cyrillic | Ст2сп |
Designation GOST Latin | Ct2cp |
Transliteration | St2sp |
By chemical elements | 2 |
Name | The value |
---|---|
Designation GOST Cyrillic | ВСт2сп |
Designation GOST Latin | BCt2cp |
Transliteration | VSt2sp |
By chemical elements | 2 |
Description
Steel St2sp is used: for the manufacture of non-critical parts requiring high ductility or deep drawing; malonarushennye elements of welded structures operating at constant loads and with positive temperatures; electric-welded pipes for the manufacture of parts and structures in motovelotehnika; pipes for shipbuilding; two-headed rails, t-type P5, is designed for ground and suspended tracks.
Note
The degree of deoxidation — SP.
Standards
Name | Code | Standards |
---|---|---|
Tape | В34 | GOST 19851-74 |
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 8696-74, GOST 8732-78, GOST 9567-75, GOST 10704-91, GOST 10705-80, GOST 10706-76, GOST 10707-80, GOST 12132-66, GOST 13663-86, GOST 20295-85, GOST 24950-81, GOST 8731-87, GOST 13664-68, GOST Р 53383-2009, OST 5.6065-74, OST 5.9162-73, TU 14-3-1160-83, TU 14-3-1428-86, TU 14-3-1473-87, TU 14-3Р-50-2001, TU 14-3Р-56-2001, TU 1373-022-05757850-08, TU 14-3-1654-89, TU 1373-013-02949352-2003 |
Low carbon steel wire | В71 | GOST 3282-74 |
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 19772-93, 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 14-1-5283-94 |
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 |
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 |
Test methods. Packing. Marking | В29 | TU 14-106-485-99 |
Bars and shapes | В32 | TU 14-2-849-89, TU 14-11-245-88, TU 14-1-1271-75, TU 14-136-367-2008 |
Chemical composition
Standard | C | S | P | Mn | Cr | Si | Ni | Fe | Cu | N | As |
---|---|---|---|---|---|---|---|---|---|---|---|
GOST 380-2005 | 0.09-0.15 | ≤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%.
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, % |
---|---|---|---|---|---|
Longitudinal electric-welded pipes (Dy=10-530 mm) in the delivery condition. Listed marsvolta base metal | |||||
≥206 | ≥333 | ≥24 | - | - | |
Pipe electric-welded profile in the delivery state according to GOST 13663-86 (samples) | |||||
- | - | ≥353 | ≥13 | - | - |
- | ≥206 | ≥333 | ≥24 | - | - |
Long products | |||||
- | ≥230 | ≥395 | ≥33 | - | ≥69 |
- | ≥210 | ≥370 | - | - | - |
- | ≥145 | - | - | - | - |
- | ≥125 | ≥350 | - | - | ≥71 |
- | ≥105 | ≥210 | - | - | ≥75 |
- | ≥55 | ≥140 | ≥42 | - | ≥87 |
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 | - |
The hot rolled plate, long products and fittings as supplied | |||||
≤20 | ≥225 | 335-430 | ≥32 | - | - |
20-40 | ≥215 | 335-430 | ≥31 | - | - |
40-100 | ≥205 | 335-430 | ≥29 | - | - |
100 | ≥195 | 335-430 | ≥29 | - | - |
Seamless hot deformed tubes in the delivery condition | |||||
≥215 | ≥343 | ≥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 |
Physical characteristics
Temperature | Е, HPa |
---|---|
0 | 198 |
20 | 198 |
100 | 183 |
200 | 175 |
300 | 167 |
400 | 158 |
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. |
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. |