Steel 20KH20N14S2 (ЭИ211)
Designation
| Name |
The value |
| Designation GOST Cyrillic |
20Х20Н14С2 |
| Designation GOST Latin |
20X20H14C2 |
| Transliteration |
20H20N14S2 |
| The chemical elements |
20Cr20Н14С2 |
| Name |
The value |
| Designation GOST Cyrillic |
ЭИ211 |
| Designation GOST Latin |
EI211 |
| Transliteration |
EhI211 |
| The chemical elements |
- |
Description
20KH20N14S2 steel is used: for the manufacture of furnace conveyors, boxes for carburizing and other parts heat treatment furnaces.
Note
Austenite heat-resistant steel-ferritic class.
Temperature intense scaling in air 1000−1050 °C.
Resistant to carburizing environments.
Standards
| Name |
Code |
Standards |
| Sectional and shaped rolling |
В22 |
GOST 1133-71, GOST 2590-2006, GOST 2591-2006, GOST 2879-2006 |
| Sheets and stripes |
В23 |
GOST 19903-74, GOST 19904-90, GOST 103-2006, GOST 19903-90 |
| Metal forming. Forgings |
В03 |
GOST 25054-81 |
| Sheets and stripes |
В33 |
GOST 4405-75, GOST 5582-75 |
| Classification, nomenclature and general norms |
В30 |
GOST 5632-72 |
| Sectional and shaped rolling |
В32 |
GOST 5949-75, GOST 7417-75, GOST 8559-75, GOST 8560-78, GOST 14955-77, TU 14-11-245-88 |
| Bulls. Blanks. Slabs |
В31 |
OST 3-1686-90 |
Chemical composition
| Standard |
C |
S |
P |
Mn |
Cr |
Si |
Ni |
Fe |
Cu |
V |
Ti |
Mo |
W |
| GOST 5632-72 |
≤0.2 |
≤0.025 |
≤0.035 |
≤1.5 |
19-22 |
2-3 |
12-15 |
The rest |
≤0.3 |
≤0.2 |
≤0.2 |
≤0.3 |
≤0.2 |
Fe is the basis.
Mechanical characteristics
| Section, mm |
sT|s0,2, MPa |
σB, MPa |
d5, % |
y, % |
| Rolled steel. Quenching in water from 1100 °C |
| - |
≥390 |
≥630 |
≥33 |
≥43 |
| Hot rolled sheet (of 1.5-3.9 mm) and cold rolled (0,7-3,9 mm) steel according to GOST 5582-75. Quenching in water or air from 1000-1080 °C |
| - |
- |
≥590 |
≥40 |
- |
| Bars hot rolled and forged according to GOST 5949-75. Annealing in air 1000-1150 °C |
|
≥295 |
≥590 |
≥35 |
≥55 |
| Rolled steel. Quenching in water from 1100 °C |
| - |
≥110 |
≥300 |
≥36 |
≥44 |
| - |
≥110 |
≥265 |
≥39 |
≥49 |
| - |
≥98 |
≥225 |
≥41 |
≥55 |
| - |
≥39 |
≥110 |
≥49 |
≥60 |
| Rolled steel. Quenching in water from 1150 °C |
| - |
343-392 |
≥630 |
≥53 |
≥73 |
| - |
≥110 |
≥305 |
≥36 |
≥34 |
| - |
≥110 |
≥265 |
≥35 |
≥34 |
| - |
≥98 |
≥225 |
≥42 |
≥41 |
| - |
≥69 |
≥155 |
≥58 |
≥47 |
| - |
≥39 |
≥110 |
≥74 |
≥58 |
| - |
≥29 |
≥88 |
≥75 |
≥55 |
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 |
Physical characteristics
| Temperature |
r, кг/м3 |
l, Вт/(м · °С) |
R, НОм · м |
a, 10-6 1/°С |
| 0 |
7800 |
- |
946 |
- |
| 20 |
7800 |
- |
946 |
- |
| 100 |
7760 |
15 |
1000 |
16 |
| 600 |
7550 |
23 |
1194 |
181 |
| 700 |
7510 |
24 |
1218 |
183 |
| 800 |
7470 |
26 |
1242 |
185 |
| 900 |
7420 |
28 |
1242 |
188 |
| 200 |
- |
17 |
1051 |
- |
| 300 |
- |
18 |
1095 |
16 |
| 400 |
- |
19 |
1130 |
- |
| 500 |
- |
21 |
1100 |
- |
| 1000 |
- |
- |
- |
188 |
| 1200 |
- |
- |
- |
19 |
A description of the physical symbols
| Name |
Description |
| Е |
The normal elasticity modulus |
| r |
Density |
| l |
Coefficient of thermal conductivity |
| R |
UD. the resistivity |
Technological properties
| Name |
The value |
| Forging temperature |
Beginning - 1170 °C, the end - 850 °C. the cross Sections up to 350 mm cooled in air. |
