Steel 20KH1M1F1TR (ЭП182)
Designation
| Name |
The value |
| Designation GOST Cyrillic |
20Х1М1Ф1ТР |
| Designation GOST Latin |
20X1M1F1TP |
| Transliteration |
20H1M1F1TR |
| The chemical elements |
20Cr1Mo1V1TiB |
| Name |
The value |
| Designation GOST Cyrillic |
ЭП182 |
| Designation GOST Latin |
EP182 |
| Transliteration |
EhP182 |
| The chemical elements |
- |
Description
Steel 20KH1M1F1TR used: for the production of fasteners with special operating characteristics; fasteners turbines and flange connections, steam pipes and equipment and parts with operating temperature up to 500−580 °C.
Note
Steel pearlitic class.
Standards
| Name |
Code |
Standards |
| Sheets and stripes |
В23 |
GOST 103-2006 |
| Sectional and shaped rolling |
В22 |
GOST 1133-71, GOST 2590-2006, GOST 2591-2006 |
| Sheets and stripes |
В33 |
GOST 4405-75 |
| Sectional and shaped rolling |
В32 |
GOST 7417-75, GOST 8559-75, GOST 8560-78, GOST 14955-77, GOST 20072-74, TU 14-1-552-72, TU 14-11-245-88 |
| Metal forming. Forgings |
В03 |
TU 0306.018-80, ST ЦКБА 010-2004 |
Chemical composition
| Standard |
C |
S |
P |
Mn |
Cr |
Si |
Ni |
Fe |
Cu |
V |
B |
Ti |
Mo |
W |
| GOST 20072-74 |
0.17-0.24 |
≤0.03 |
≤0.03 |
≤0.5 |
0.9-1.4 |
≤0.37 |
≤0.3 |
The rest |
≤0.2 |
0.7-1 |
≤0.005 |
0.05-0.12 |
0.8-1.1 |
≤0.2 |
| TU 14-1-552-72 |
0.17-0.24 |
≤0.03 |
≤0.03 |
≤0.5 |
0.9-1.4 |
≤0.35 |
≤0.5 |
The rest |
≤0.3 |
0.7-1 |
≤0.005 |
0.05-0.12 |
0.8-1.1 |
- |
Fe is the basis.
According to GOST 20072-74, when steel is scrap-process, the content of Cu ≤ 0.30%. Tungsten is allowed up to 0.20%. When smelting steel by the method of electroslag remelting, the mass fraction of sulfur should not be more than 0.015%.
According to TU 14-1-552-72, the chemical composition is given for steels of 20X1M1F1TR (EP182) and 20X1M1F1TR-III (EP182-SH) grades.
Mechanical characteristics
| Section, mm |
sT|s0,2, MPa |
σB, MPa |
d5, % |
y, % |
kJ/m2, кДж/м2 |
| Bars hot rolled and forged (12-180 mm). Quenching in oil with 970-990 °C to + Leave at 680-720 °C, air cooling |
|
≥670 |
≥780 |
≥15 |
≥50 |
≥590 |
| Rolled steel. Quenching in oil with 980°C + Vacation at 700 °C (exposure 5-7 hours) |
|
≥700 |
≥800 |
≥15 |
≥60 |
≥600 |
| Rolled steel. Normalization at 960-980 °C, cooling in oil + Vacation at 700-750 °C, air cooling |
|
≥255 |
≥470 |
≥21 |
≥55 |
≥980 |
Description mechanical marks
| Name |
Description |
| Section |
Section |
| sT|s0,2 |
Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2% |
| σB |
Limit short-term strength |
| d5 |
Elongation after rupture |
| y |
The relative narrowing |
| kJ/m2 |
Toughness |
Physical characteristics
| Temperature |
Е, ГПа |
r, кг/м3 |
l, Вт/(м · °С) |
a, 10-6 1/°С |
| 20 |
215 |
7850 |
- |
- |
| 100 |
212 |
- |
423 |
- |
| 200 |
208 |
- |
406 |
12 |
| 300 |
202 |
- |
402 |
123 |
| 400 |
194 |
- |
398 |
1285 |
| 500 |
183 |
- |
394 |
13 |
| 600 |
174 |
- |
389 |
135 |
| 700 |
153 |
- |
385 |
1355 |
| 800 |
- |
- |
381 |
- |
A description of the physical symbols
| Name |
Description |
| Е |
The normal elasticity modulus |
| r |
Density |
| l |
Coefficient of thermal conductivity |
| R |
UD. the resistivity |
