Steel 20X23H13
Steel 20X23H13
Steel 20Cr23H13: a classifier of steels and alloys. Below is systematized information on the purpose, chemical composition, types of supply, substitutes, critical point temperatures, physical, mechanical, technological and foundry properties for the brand — Steel 20X23H13.
General information on steel 20X23H13
| Delivery type |
| Sheet 20х23Н13, bars, including shaped: GOST 5949−75, GOST 2590−71, GOST 2591−71, GOST 2879−69. Calibrated bar GOST 7417−75, GOST 8559−75, GOST 8560−78. Grinded rod and silver GOST 14955−77. Sheet thick GOST 7350−77, GOST 19903−74, GOST 19904−74. Thin sheet GOST 5582−75, GOST 19904−74. GOST 4405−75 GOST 103−76. Forged and forged blanks GOST 1133−71. |
| Application |
| The details working at high temperatures in low-loaded condition. Steel is heat-resistant up to 900−1000 ° C, of attensitic-ferritic class. |
Chemical composition of steel 20X23H13
| Chemical element |
% |
| Silicon (Si), not more |
1.0 |
| Manganese (Mn), not more than |
2.0 |
| Copper (Cu), not more than |
0.30 |
| Nickel (Ni) |
12.0−15.0 |
| Sulfur (S), not more than |
0.025 |
| Titanium (Ti), not more than |
0.2 |
| Carbon ©, not more than |
0.20 |
| Phosphorus (P), not more than |
0.035 |
| Chrome (Cr) |
22.0−25.0 |
Mechanical properties of steel 20X23H13
| Heat treatment, delivery condition |
Section, mm |
σ0.2, MPa |
σB, MPa |
δ5, % |
ψ, % |
| Rods. Hardening 1100−1150°C, air, oil or water |
60 |
295 |
490 |
35 |
50 |
| Hot- or cold-rolled sheets. Hardened 1100−1150°C, water or air (transverse samples) |
<3,9 |
|
540 |
35 |
|
| Hot- or cold-rolled sheets. Hardened 1030−1120°C, water (transverse samples) |
>4 |
|
568 |
35 |
|
Mechanical properties at elevated temperatures
| t test,°C |
σ0, 2, MPa |
σB, MPa |
δ5, % |
ψ, % |
KCU, J/m2 |
| 1050 °C hardening, water. |
| 20 |
360 |
650 |
39 |
60 |
206 |
| 550 |
300 |
580 |
28 |
60 |
294 |
| 600 |
280 |
520 |
29 |
64 |
294 |
| 650 |
260 |
465 |
31 |
62 |
294 |
| 700 |
215 |
475 |
35 |
57 |
294 |
Mechanical properties in the long term strength test
| Creep strength, MPa |
Creep rate, %/h |
t test,°C |
Ultimate long-term strength, MPa |
Test duration, h |
t test, h |
| 151 |
1/10000 |
550 |
235 |
10000 |
550 |
| 57 |
1/100000 |
550 |
186 |
10000 |
600 |
| |
|
|
196 |
100000 |
550 |
| |
|
|
147 |
100000 |
600 |
Technological properties of steel 20X23H13
| Forging temperature |
| The beginning 1220, the end 900. Sections up to 350 mm are cooled in the air. |
| Weldability |
| Limited weldability. Welding methods: RDS, electrodes OZL-6, TSL-25. |
| Tendency to tempering ability |
| tends to in the range of 600−800 C because of the formation of b-phase. |
Corrosion properties of steel 20X23H13.
| Medium |
Temperature of test, °C |
Depth, mm/year |
| 40% H2SO4 |
20 |
0.1−1.0 |
| Concentrated H2SO4 |
20 |
0.1 |
Physical properties of steel 20Х23Н13
| Test temperature, °С |
20 |
100 |
200 |
300 |
400 |
500 |
600 |
700 |
800 |
900 |
| Modulus of normal elasticity, E, GPa |
207 |
|
|
|
|
|
|
|
|
|
| Steel density, pn, kg/m3 |
7820 |
7890 |
|
|
|
|
7580 |
|
7480 |
|
| Thermal conductivity coefficient W/(m — °C) |
|
|
17 |
19 |
21 |
23 |
24 |
27 |
29 |
31 |
| Test temperature,°C |
20−100 |
20−200 |
20−300 |
20−400 |
20−500 |
20−600 |
20−700 |
20−800 |
20−900 |
20−1000 |
| Coefficient of linear expansion (a, 10−6 1/°C) |
14.9 |
15.7 |
16.6 |
17.1 |
17.5 |
17.8 |
18.2 |
|
|
|
| Specific heat capacity (C, J/(kg -°C)) |
538 |
|
|
|
|
|
|
|
|
|
Sensitivity to embrittlement of steel 20X23H13
| Temperature, °C |
Time, h |
KCU, J/cm2 |
| - |
Initial state |
206 |
| 600 |
1000 |
100 |
| 600 |
2000 |
78 |
| 600 |
8800 |
16 |
| 750 |
1000 |
55 |
| 750 |
2000 |
78 |
