Steel 10kp
Description
Steel 10kp
Steel 10kp: brand of steels and alloys. Below is the systematized information about the purpose, chemical composition, types of supplies, substitutes, temperature of critical points, physical, mechanical, technological and casting properties for the grade — Steel 10kp.
General information of steel 10kp
| Substitute brand |
| steel 08kp, 15kp, steel 10 |
| Delivery type |
| Long products, including shaped: GOST 10702−78, GOST 2879−69, GOST 2590−71, GOST 19771−74, GOST 19772−74, GOST 8278−83, GOST 8281−80, GOST 8282−83, GOST 8283 -77. Calibrated bar GOST 10702−78, GOST 7417−75, GOST 8560−78. Polished bar and silver bar GOST 10702−78, GOST 14955−77. Thick sheet GOST 4041−71, GOST 19903−74, GOST 1577−81. Thin sheet GOST 16523−70, GOST 19903−74, GOST 19904−74. Tape GOST 503−81, GOST 10234−77. Strip GOST 1577−81, GOST 82−70. Wire GOST 5663−79, GOST 2771−81, GOST 17305−71. Pipes GOST 10705−80, GOST 10704−91. |
| Application |
| Parts operating at temperatures up to 450 ° C, which are subject to high plasticity requirements, as well as bushings, lugs, washers, screws and other parts after HTT, which are subject to high surface hardness and wear resistance requirements with low core strength. |
Chemical composition of steel 10kp
| 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) |
0.07−0.14 |
| Phosphorus (P), no more |
0.035 |
| Chromium (Cr), no more |
0.15 |
Mechanical properties of steel 10kp
| Heat treatment, delivery condition |
σ B, MPa |
δ 5 ,% |
δ 4 ,% |
HB |
| Calibrated and calibrated steel with special finishing after annealing and tempering |
315−410 |
|
|
143 |
| Calibrated and calibrated steel with special finishing after spherical annealing |
295−390 |
|
|
143 |
| Steel calibrated and calibrated with a special finish, work-hardened without heat treatment |
370 |
8 |
|
179 |
| Heat-treated sheets of the 1st-2nd category |
275−410 |
32 |
|
114 |
| Flattened cold-worked tape |
500−800 |
|
|
|
| Flattened annealed tape |
<450 |
20 |
|
|
| Cold rolled soft strip |
315−440 |
|
17 |
|
| Cold rolled semi-rolled strip |
375−510 |
|
7 |
|
| Cold-rolled cold-worked strip |
440−590 |
|
4 |
|
Technological properties of steel 10kp
| Forging temperature |
| Beginning 1300, end 700. Air cooling. |
| Weldability |
| No restrictions, except for XTO parts; welding methods: RDS, ADS submerged arc and gas protection, KTS. |
| Machinability by cutting |
| In the hot-rolled state at HB 99−107 and σ B = 450 MPa, K υ tv.spl. = 2,1, K υ b.st. = 1.6. |
| Tendency to release ability |
| not inclined |
| Flock sensitivity |
| not sensitive |
Temperature of critical points of steel 10kp
| Critical point |
° C |
| Ac1 |
732 |
| Ac3 |
870 |
| Ar3 |
854 |
| Ar1 |
680 |
Steel hardness 10kp
| Delivery condition, heat treatment mode |
HRC e surface |
HB |
| Cementation 920−950 C, hardening 790−810 C, water, tempering 180−200 C, air. |
57−63 |
137 |
Physical properties of steel 10kp
| Test temperature, ° С |
20 |
100 |
200 |
300 |
400 |
500 |
600 |
700 |
800 |
900 |
| Normal elastic modulus, E, GPa |
186 |
|
|
|
|
|
|
|
|
|
| Density of steel, pn, kg / m 3 |
7856 |
7832 |
7800 |
7765 |
7730 |
7692 |
7653 |
7613 |
7582 |
7594 |
| Thermal conductivity coefficient W / (m ° С) |
|
58 |
54 |
49 |
45 |
40 |
36 |
32 |
29 |
27 |
| Ud. electrical resistance (p, Nom. m) |
|
190 |
263 |
352 |
458 |
584 |
734 |
905 |
1081 |
1130 |
| 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) |
12.4 |
13.2 |
13.9 |
14.5 |
14.9 |
15.1 |
15.3 |
12.1 |
14.8 |
12.6 |
| Specific heat (C, J / (kg ° C)) |
466 |
479 |
|
512 |
|
267 |
|
|
|
|
