Steel St4ps (ВСт4пс)
Designation
| Name |
The value |
| Designation GOST Cyrillic |
Ст4пс |
| Designation GOST Latin |
Ct4pc |
| Transliteration |
St4ps |
| The chemical elements |
4 |
| Name |
The value |
| Designation GOST Cyrillic |
ВСт4пс |
| Designation GOST Latin |
BCt4pc |
| Transliteration |
VSt4ps |
| The chemical elements |
4 |
Description
Steel St4ps is 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 such as shafts, axles, bushings; welded pipes; 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 — PS.
Standards
| Name |
Code |
Standards |
| 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 |
| Sheets and stripes |
В23 |
GOST 82-70, GOST 14637-89, GOST 14918-80, GOST 16523-97, GOST 16523-89, GOST 16523-70, GOST 103-2006 |
| Bulls. Blanks. Slabs |
В31 |
OST 3-1686-90, TU 14-1-4944-90 |
| Sheets and stripes |
В33 |
TU 14-1-3579-83, TU 14-1-4431-88 |
| Sectional and shaped rolling |
В32 |
TU 14-2-849-89, TU 14-11-245-88, TU 14-136-367-2008 |
Chemical composition
| 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 |
0.05-0.15 |
≤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 |
sT|s0,2, MPa |
σB, MPa |
d5, % |
d4 |
y, % |
kJ/m2, кДж/м2 |
| 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 |
- |
- |
- |
| Long products |
| - |
≥240 |
≥390 |
≥33 |
- |
≥70 |
- |
| - |
≥215 |
≥370 |
≥22 |
- |
- |
- |
| - |
≥145 |
- |
- |
- |
- |
- |
| - |
≥125 |
≥350 |
≥32 |
- |
≥71 |
- |
| - |
≥110 |
≥205 |
≥30 |
- |
≥75 |
- |
| - |
≥59 |
≥135 |
≥43 |
- |
≥86 |
- |
| The hot rolled plate, long products and fittings as supplied |
| ≤20 |
≥265 |
410-530 |
≥24 |
- |
- |
≥880 |
| 20-40 |
≥255 |
410-530 |
≥23 |
- |
- |
≥690 |
| 40-100 |
≥245 |
410-530 |
≥21 |
- |
- |
- |
| 100 |
≥235 |
410-530 |
≥21 |
- |
- |
- |
| 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 |
- |
- |
| Shapes. Without heat treatment - as supplied |
| - |
240-270 |
420-540 |
≥23 |
- |
- |
- |
Description mechanical marks
| Name |
Description |
| Section |
Section |
| sT|s0,2 |
Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2% |
| σB |
Limit short-term strength |
| d5 |
Elongation after rupture |
| d4 |
Elongation after rupture |
| y |
The relative narrowing |
| kJ/m2 |
Toughness |
Physical characteristics
| Temperature |
Е, ГПа |
| 0 |
196 |
| 20 |
196 |
| 100 |
183 |
| 200 |
174 |
| 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 is limited. |
| Propensity to temper brittleness |
tend not |
| Forging temperature |
Start - 1280 °C, the end - of 800 °C. |
| Flock-sensitive sensitivity |
not sensitive |
| Workability by cutting |
Under HB 152 Kn TV.SPL.=1.7 Kn b.St.=1.7 |
