Steel 20JUA
Designation
Name | The value |
---|---|
Designation GOST Cyrillic | 20ЮА |
Designation GOST Latin | 20JuA |
Transliteration | 20YuA |
By chemical elements | 20Al |
Description
20JUA steel is used: for the production of sheet metal 2 mm 4−14 category, intended for the manufacture of various parts by cold forming.
Standards
Name | Code | Standards |
---|---|---|
Sheets and strips | В23 | GOST 19903-90, TU 14-1-4632-93 |
Sheets and strips | В33 | GOST 4041-71, TU 14-106-328-89 |
Chemical composition
Standard | C | S | P | Mn | Cr | Si | Ni | Fe | Cu | N | As | Al |
---|---|---|---|---|---|---|---|---|---|---|---|---|
GOST 4041-71 | 0.16-0.22 | ≤0.025 | ≤0.02 | 0.25-0.45 | ≤0.1 | ≤0.07 | ≤0.15 | Rest | ≤0.2 | ≤0.006 | ≤0.08 | 0.02-0.08 |
Fe is the basis.
Mechanical properties
Section, mm | σU, MPa | d5, % | d10 | HB, MPa | HRB |
---|---|---|---|---|---|
Sheet metal class 2 heat treated (annealing, normalization, high tempering or normalizing + tempering) in the delivery state according to GOST 4041-71 | |||||
4-14 | 340-490 | ≥28 | ≥24 | ≤127 | ≤71 |
Description mechanical marks
Name | Description |
---|---|
σU | Limit short-term strength |
d5 | Elongation after rupture |
d10 | Elongation after rupture |
HB | Brinell hardness number |
HRB | Rockwell hardness (indenter steel, spherical) |