Designation
| Name |
The value |
| Designation GOST Cyrillic |
40ХФЛ |
| Designation GOST Latin |
40XFL |
| Transliteration |
40HFL |
| By chemical elements |
40CrV |
Description
40KHFL steel is used: for the manufacture of castings to various industrial purpose.
Standards
| Name |
Code |
Standards |
| Steel castings |
В82 |
GOST 977-88 |
Chemical composition
| Standard |
C |
S |
P |
Mn |
Cr |
Si |
Fe |
V |
| GOST 977-88 |
0.35-0.45 |
≤0.04 |
≤0.04 |
0.5-0.8 |
1-1.4 |
0.2-0.5 |
Rest |
0.15-0.3 |
Fe is the basis.
Mechanical properties
| Section, mm |
sT|s0,2, MPa |
σU, MPa |
d |
y, % |
KCU, kJ/m2 |
| Annealing in air with 870-890 °C + vacation at 500-520 °C, air cooling |
| 100 |
≥883 |
≥1177 |
≥4 |
≥8 |
≥196 |
| Normalization at 870-890 °C + vacation at 500-520 °C, air cooling |
| 100 |
≥579 |
≥770 |
≥10 |
≥18 |
≥245 |
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 |
| d |
Elongation after rupture |
| y |
The relative narrowing |
| KCU |
Toughness |