Steel 08ps
Description
Steel 08ps
Steel 08ps: brand of steels and alloys. Below is a 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 08ps.
General information steel 08ps
| Substitute brand |
| steel 08 |
| Delivery type |
| Sheet 08ps, long products, including shaped: GOST 2590−71, GOST 2879−69, GOST 10702−78. Calibrated bar GOST 7417−75, GOST 8560−78, GOST 10702−78. Polished bar and silver bar GOST 14955−77, GOST 10702−78. Thin sheet GOST 16523−70, GOST 19903−74, GOST 19904−74, GOST 9045−80. Tape GOST 503−81, GOST 10234−77. Strip GOST 1577−81, GOST 82−70. Pipes GOST 10705−80, GOST 10704−91. Thick sheet GOST 4041−71, GOST 19903−74, GOST 1577−81. |
| Application |
| For gaskets, washers, forks, pipes, as well as parts subjected to chemical heat treatment — bushings, lugs, rods. |
Chemical composition of 08ps steel
| Chemical element |
% |
| Silicon (Si) |
0.05−0.17 |
| Manganese (Mn) |
0.35−0.65 |
| Copper (Cu), no more |
0.25 |
| Arsenic (As), no more |
0.08 |
| Nickel (Ni), no more |
0.25 |
| Sulfur (S), no more |
0.04 |
| Carbon (C) |
0.05−0.11 |
| Phosphorus (P), no more |
0.035 |
| Chromium (Cr), no more |
0.10 |
Mechanical properties of 08ps steel
| Heat treatment, delivery condition |
σ B, MPa |
δ 5 ,% |
δ 4 ,% |
HB |
| Heat-treated sheets of the 3rd category |
<365 |
36 |
|
98 |
| Heat-treated cold-rolled sheets |
255−365 |
|
28 |
|
| Annealed crimped tape |
<450 |
20 |
|
|
| Extra soft cold-rolled strip |
245−390 |
|
23 |
|
| Cold rolled soft tape |
315−440 |
|
17 |
|
| Cold-rolled semi-rolled strip |
370−510 |
|
7 |
|
| Cold-rolled cold-worked strip |
440−590 |
|
4 |
|
| Calibrated and calibrated steel with special finishing after annealing or tempering |
310−410 |
|
|
131 |
| Calibrated and calibrated steel with special finishing after spheroidizing annealing |
290−390 |
|
|
131 |
| Calibrated and calibrated steel with special finishing after annealing, cold-worked |
370 |
|
8 |
179 |
Mechanical properties depending on the section
| Heat treatment, delivery condition |
Section, mm |
σ 0.2, MPa |
σ B, MPa |
δ 5 ,% |
δ 4 ,% |
ψ,% |
| Normalized or hot rolled strips |
6−25 |
175 |
295 |
35 |
|
60 |
| Hot rolled sheets |
<2 |
|
275−390 |
|
24 |
|
| Hot rolled sheets |
2−3.9 |
|
275−390 |
|
26 |
|
| Cold rolled sheets |
<2 |
|
275−390 |
|
25 |
|
| Cold rolled sheets |
2−3.9 |
|
275−390 |
|
28 |
|
Technological properties of 08ps steel
| Forging temperature |
| Beginning 1250, end 800. Sections up to 300 mm are cooled in air. |
| Weldability |
| It can be welded without restrictions, except for parts after chemical-heat treatment; welding methods: RDS, ADS submerged arc and gas shielded, KTS. |
| Machinability by cutting |
| In the hot-rolled state at HB 131 and σ B = 315−410 MPa K υ tv.spl. = 2,1, K υ b.st. = 1.65. |
| Tendency to release ability |
| Not inclined. |
| Flock sensitivity |
| Not sensitive. |
Temperature of critical points of steel 08ps
| Critical point |
° C |
| Ac1 |
732 |
| Ac3 |
874 |
| Ar3 |
854 |
| Ar1 |
680 |
Physical properties of 08ps steel
| Test temperature, ° С |
20 |
100 |
200 |
300 |
400 |
500 |
600 |
700 |
800 |
900 |
| Normal elastic modulus, E, GPa |
203 |
206 |
183 |
|
|
|
|
|
|
|
| Density of steel, pn, kg / m 3 |
|
7846 |
7814 |
7781 |
7745 |
7708 |
7668 |
7628 |
7598 |
7602 |
| Thermal conductivity coefficient W / (m ° С) |
|
60 |
56 |
51 |
47 |
41 |
37 |
34 |
thirty |
27 |
| Ud. electrical resistance (p, Nom. m) |
|
178 |
252 |
341 |
448 |
575 |
725 |
898 |
1073 |
1124 |
| Test temperature, ° С |
20−100 |
20−200 |
20−300 |
20−400 |
20−500 |
20−600 |
20−700 |
20−800 |
20−900 |
20−1000 |
| Linear expansion coefficient (a, 10−6 1 / ° С) |
12.5 |
13.4 |
14.0 |
14.5 |
14.9 |
15.1 |
15.3 |
|
|
|
| Specific heat (C, J / (kg ° C)) |
482 |
498 |
514 |
533 |
555 |
584 |
628 |
695 |
703 |
695 |
