Steel VSt3ps
Description
Steel VSt3ps
Steel VSt3ps: a 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 VSt3ps.
General information about steel VSt3ps
| Substitute brand |
| steel Vst3sp |
| Delivery type |
| Long products, including shaped: GOST 2590−71, GOST 2591−71, GOST 19771−74, GOST 19772−74, GOST 8278−83, GOST 8281−80, GOST 8282−76, GOST 8283−77, GOST 380 -71, GOST 8510−86, GOST 8240−72, GOST 535−79, GOST 8509−86, GOST 2879−69, GOST 8239−72. Thick sheet GOST 19903−74. Thin sheet GOST 19903−74. Tape GOST 503−81. Strip GOST 82−70, GOST 103−76. Pipes GOST 10706−76, GOST 8734−75, GOST 10705−80. |
| Application |
| Bearing and non-bearing elements of welded and non-welded structures and parts operating at positive temperatures. Shaped and flat rolled products (category 5) up to 10 mm thick for load-bearing elements of welded structures operating under variable loads in the range from -40 to + 425 ° C. Rolled products from 10 to 25 mm — for load-bearing elements of welded structures operating at temperatures from -40 to + 425 ° C, subject to delivery with guaranteed weldability. |
Chemical composition of steel VSt3ps
| Chemical element |
% |
| Silicon (Si) |
0.05−0.17 |
| Manganese (Mn) |
0.40−0.65 |
| 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) |
0.14−0.22 |
| Phosphorus (P), no more |
0.04 |
| Chromium (Cr), no more |
0.30 |
Mechanical properties of steel VSt3ps
Mechanical properties
| Heat treatment, delivery condition |
Section, mm |
σ 0.2, MPa |
σ B, MPa |
δ 5 ,% |
δ 4 ,% |
| Hot rolled products |
<20 |
245 |
370−480 |
26 |
|
| Hot rolled products |
20−40 |
235 |
370−480 |
25 |
|
| Hot rolled products |
40−100 |
225 |
370−480 |
23 |
|
| Hot rolled products |
> 100 |
205 |
370−480 |
23 |
|
| Hot rolled sheets |
<2.0 |
|
370−480 |
|
20 |
| Hot rolled sheets |
2.0−3.9 |
|
370−480 |
|
22 |
| Cold rolled sheets |
<2.0 |
|
370−480 |
|
22 |
| Cold rolled sheets |
2.0−3.9 |
|
370−480 |
|
24 |
Technological properties of steel VSt3ps
| 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 |
| In the hot-rolled state at NV 124 σ B = 400 MPa, K υ tv.spl. = 1.8 and K υ b.st. = 1.6 |
| Tendency to release ability |
| Not inclined |
| Flock sensitivity |
| Not sensitive |
Temperature of critical points of steel VSt3ps
| Critical point |
° C |
| Ac1 |
735 |
| Ac3 |
850 |
| Ar3 |
835 |
| Ar1 |
680 |
Impact toughness of steel VSt3ps
Impact strength, KCU, J / cm 2
| Delivery status, heat treatment |
+20 |
after mechanical aging |
-20 |
| Sheet with a cross section of 5−9 mm |
78 |
39 |
39 |
| Sheet cross section 10−25 mm |
69 |
29 |
29 |
| Sheet cross section 26−40 mm |
49 |
|
|
| Wide strip with a long section of 5−9 mm |
98 |
49 |
49 |
| Wide strip with a long section of 10−25 mm |
78 |
29 |
29 |
| Wide strip with a long section of 26−40 mm |
69 |
|
|
| Sections and shapes with a long section of 5−9 mm |
108 |
49 |
49 |
| Sections and shapes with a long section of 10−25 mm |
98 |
29 |
29 |
| Sections and shapes with a long section of 26−40 mm |
88 |
|
|
Physical properties of steel VSt3ps
| Test temperature, ° С |
20 |
100 |
200 |
300 |
400 |
500 |
600 |
700 |
800 |
900 |
| Normal elastic modulus, E, GPa |
213 |
208 |
202 |
195 |
187 |
176 |
167 |
153 |
|
|
