Steel VSt2sp
Description
Steel VSt2sp
Steel VSt2sp: brand of steels and alloys. Below is the systematized information on the purpose, chemical composition, types of supplies, substitutes, temperature of critical points, physical, mechanical, technological and casting properties for the grade — Steel VSt2sp.
General information about steel VSt2sp
| Substitute brand |
| steel VSt2ps |
| Delivery type |
| Long products, including shaped: GOST 2590−71, GOST 2591−71, GOST 2879−69, GOST 19772−74, GOST 535−79, GOST 8278−83, GOST 8281−80, GOST 8283−77, GOST 380 -71, GOST 8509−86, GOST 8510−86, GOST 8240−72, GOST 8239−72. Thick sheet GOST 19903−74. Thin sheet GOST 19903−74. Tape GOST 503−81, GOST 6009−74. Strip GOST 103−76, GOST 82−70, GOST 535−79. Wire GOST 3282−74, GOST 17305−71. Pipes GOST 10705−80, GOST 10706−76, GOST 3262−75. |
| Application |
| Irresponsible parts requiring increased ductility or deep drawing, lightly loaded elements of welded structures operating under constant loads and positive temperatures. |
The chemical composition of steel VSt2sp
| Chemical element |
% |
| Silicon (Si) |
0.12−0.30 |
| Manganese (Mn) |
0.25−0.50 |
| Copper (Cu), no more |
0.30 |
| Arsenic (As), no more |
0.08 |
| Nickel (Ni), no more |
0.30 |
| Sulfur (S), no more |
0.05 |
| Carbon (C) |
0.09−0.15 |
| Phosphorus (P), no more |
0.04 |
| Chromium (Cr), no more |
0.30 |
Mechanical properties of steel VSt2sp
Mechanical properties
| Heat treatment, delivery condition |
Section, mm |
σ 0.2, MPa |
σ B, MPa |
δ 5 ,% |
δ 4 ,% |
| Hot rolled products |
<20 |
225 |
330−430 |
32 |
|
| Hot rolled products |
20−40 |
215 |
330−430 |
31 |
|
| Hot rolled products |
40−100 |
205 |
330−430 |
29 |
|
| Hot rolled products |
> 100 |
195 |
330−430 |
29 |
|
| Hot rolled sheets |
<2.0 |
|
330−430 |
|
21 |
| Hot rolled sheets |
2.0−3.9 |
|
330−430 |
|
23 |
| Cold rolled sheets |
<2.0 |
|
330−430 |
|
24 |
| Cold rolled sheets |
2.0−3.9 |
|
330−430 |
|
26 |
| Hot-deformed pipes, heat-treated |
|
215 |
340 |
24 |
|
| Longitudinal electric-welded pipes |
|
225 |
340 |
22 |
|
Mechanical properties of rolled products at elevated temperatures
| test t, ° C |
σ 0.2, MPa |
σ B, MPa |
δ,% |
ψ,% |
KCU, J / m 2 |
| 20 |
230 |
395 |
33 |
69 |
104 |
| 100 |
210 |
370 |
|
|
126 |
| 300 |
145 |
|
|
|
120 |
| 400 |
125 |
350 |
|
71 |
89 |
| 500 |
105 |
210 |
|
75 |
66 |
| 600 |
55 |
140 |
42 |
87 |
80 |
Technological properties of steel VSt2sp
| Forging temperature |
| Beginning 1300, end 750. Air cooling. |
| Weldability |
| Can be welded without restrictions; welding methods: RDS, ADS submerged arc and gas shielded, EShS, KTS. For thicknesses over 36 mm, preheating and subsequent heat treatment are recommended. |
| Machinability by cutting |
| Olecontrol1 |
| Tendency to release ability |
| Not inclined |
| Flock sensitivity |
| Not sensitive |
Temperature of critical points of steel ВСт2сп
| Critical point |
° C |
| Ac1 |
735 |
| Ac3 |
854 |
| Ar3 |
835 |
| Ar1 |
682 |
Impact strength of steel VSt2sp
Impact strength, KCU, J / cm 2
| Delivery status, heat treatment |
+20 |
0 |
-20 |
-40 |
| Hot rolled bar with a diameter of up to 140−150 mm |
23−63 |
13−16 |
8 |
8 |
Hardness of steel VSt2sp
| Delivery condition, heat treatment mode |
HRC e surface |
HB |
| Normalization 900−950 С, air. |
|
156 |
| Cementation 900−950 С, air. Hardening 800−820 C, water. Vacation 180−200 C, air. |
57 |
|
| Cyanidation 840−860 С, air. Quenching 840−860 C, water. Vacation 180−200 C, air. |
57−63 |
|
Endurance limit of steel VSt2sp
| σ -1, MPa |
σ B, MPa |
| 176−206 |
335−430 |
Physical properties of steel VSt2sp
| Test temperature, ° С |
20 |
100 |
200 |
300 |
400 |
500 |
600 |
700 |
800 |
900 |
| Normal elastic modulus, E, GPa |
198 |
183 |
175 |
167 |
158 |
|
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