Steel 18Х20Н13 (ЭИ997)
Designation
| Name |
The value |
| Designation GOST Cyrillic |
18Х20Н13 |
| Designation GOST Latin |
18X20H13 |
| Transliteration |
18H20N13 |
| The chemical elements |
18Cr20Н13 |
| Name |
The value |
| Designation GOST Cyrillic |
ЭИ997 |
| Designation GOST Latin |
EI997 |
| Transliteration |
EhI997 |
| The chemical elements |
- |
Description
18Х20Н13 steel is used: for the manufacture of wire used for ropes and armor, the cable tugs operating in sea water; cables hulls of ships and marine equipment products.
Note
Low corrosion-resistant high-alloy austenitic steel.
Magnetic permeability μ ≤ 1,06 GS/E.
Standards
| Name |
Code |
Standards |
| Castings from non-ferrous metals and alloys |
В84 |
RD 9257-76 |
| Bulls. Blanks. Slabs |
В31 |
TU 14-1-1393-75 |
| Sectional and shaped rolling |
В32 |
TU 14-1-863-74 |
| Steel alloy wire |
В73 |
TU 14-4-1091-80 |
Chemical composition
| Standard |
C |
S |
P |
Mn |
Cr |
Si |
Ni |
Fe |
Mo |
| TU 14-1-1393-75 |
0.15-0.22 |
≤0.03 |
≤0.03 |
0.5-0.8 |
20-21.5 |
≤0.7 |
12.5-13.5 |
The rest |
- |
| RD 9257-76 |
0.15-0.22 |
≤0.03 |
≤0.03 |
0.5-0.8 |
20-21.5 |
≤0.7 |
12.5-13.5 |
The rest |
≤0.2 |
Fe is the basis.
According to TU 14-1-863-74, TU 14-1-1393-75, the allowed deviations from the established standards of chemical composition and the content of residual elements must comply with GOST 5632.
Mechanical characteristics
| Section, mm |
σB, MPa |
| Wire nagarebana |
| 0.2-1 |
1570-1893 |
Description mechanical marks
| Name |
Description |
| Section |
Section |
| σB |
Limit short-term strength |
Physical characteristics
| Temperature |
r, кг/м3 |
a, 10-6 1/°С |
| 20 |
7900 |
- |
| 400 |
- |
1600 |
| 800 |
- |
1900 |
A description of the physical symbols
| Name |
Description |
| Е |
The normal elasticity modulus |
| l |
Coefficient of thermal conductivity |
Technological properties
| Name |
The value |
| Macrostructure and contamination |
The macrostructure of the wire rod according to TU 14-1-863-74 should not have shrinkage porosity, bubbles, cracks and foreign inclusions. |
| Magnetic properties |
Magnetic permeability in the field 16000-40000 A/m (200 to 500 Oersted) in RD 9257-76 μ ≤ 1,06 GS/e, wire rod, on the other 14-1-863-74 μ ≤ 1,015 GS/E. |
