Designation
| Name |
The value |
| Designation GOST Cyrillic |
20Х13Н4Г9 |
| Designation GOST Latin |
20X13H4G9 |
| Transliteration |
20H13N4G9 |
| By chemical elements |
20Cr13Н4Mn9 |
| Name |
The value |
| Designation GOST Cyrillic |
ЭИ100 |
| Designation GOST Latin |
EI100 |
| Transliteration |
EhI100 |
| By chemical elements |
- |
Description
Steel 20KH13N4G9 used: for the production of various parts and structures, welded by spot welding, production of various parts for the aircraft industry.
Note
Stainless steel austenitic-martensitic class.
Substitute cold-rolled steel grades 12H18N9 and 17H18N9 for strong and light structures connected by spot welding.
Welded joints made by other methods, is susceptible to intergranular corrosion. Steel 20KH13N4G9 good resistance to atmospheric corrosion.
Standards
| Name |
Code |
Standards |
| Tape |
В34 |
GOST 4986-79 |
| Sheets and strips |
В33 |
GOST 5582-75, TU 14-1-2186-77 |
| Classification, nomenclature and General rules |
В30 |
GOST 5632-72 |
| Bars and shapes |
В32 |
GOST 5949-75, TU 14-1-377-72, TU 14-1-3957-85, TU 14-11-245-88 |
| Blanks. Of the workpiece. Slabs |
В21 |
OST 1 90176-75 |
| Blanks. Of the workpiece. Slabs |
В31 |
OST 3-1686-90 |
Chemical composition
| Standard |
C |
S |
P |
Mn |
Cr |
Si |
Ni |
Fe |
Cu |
Ti |
Mo |
| GOST 5632-72 |
0.15-0.3 |
≤0.025 |
≤0.05 |
8-10 |
12-14 |
≤0.8 |
3.7-4.7 |
Rest |
≤0.3 |
≤0.2 |
≤0.3 |
Fe is the basis.
Mechanical properties
| Section, mm |
sT|s0,2, MPa |
σU, MPa |
d5, % |
d4 |
y, % |
| Cold-rolled steel strip of 0.05-2.00 mm according to GOST 4986-79 on delivery |
| 0.2-2 |
- |
≥1130 |
- |
≥6 |
- |
| 0.2 |
- |
≥1130 |
- |
≥3 |
- |
| 0.2-2 |
- |
≥780 |
- |
≥10 |
- |
| 0.2 |
- |
≥980 |
- |
≥5 |
- |
| 0.2-2 |
- |
≥780 |
- |
≥16 |
- |
| 0.2 |
- |
≥780 |
- |
≥8 |
- |
| Cold-rolled steel strip of 0.05-2.00 mm according to GOST 4986-79. Quenching in water or air from 1050-1080 °C (samples) |
| 0.2-2 |
- |
≥590 |
- |
≥35 |
- |
| 0.2 |
- |
≥590 |
- |
≥18 |
- |
| Sheet full hard GOST 5582-75. Without heat treatment |
| ≤3.9 |
- |
≥980 |
≥15 |
- |
- |
| 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 1050-1080 °C |
| - |
- |
≥640 |
≥40 |
- |
- |
| Bars hot rolled and forged GOST 5949-75 and Forming at OST 1 90176-75. Annealing in air 1070-1130 °C |
|
≥245 |
≥640 |
≥35 |
- |
≥55 |
Description mechanical marks
| Name |
Description |
| sT|s0,2 |
Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2% |
| σU |
Limit short-term strength |
| d5 |
Elongation after rupture |
| d4 |
Elongation after rupture |
| y |
The relative narrowing |
