Alloy ВТ9Л
Designation
| Name |
The value |
| Designation GOST Cyrillic |
ВТ9Л |
| Designation GOST Latin |
BT9L |
| Transliteration |
VT9L |
| The chemical elements |
ВTe9 |
Description
Alloy ВТ9Л used: for the manufacture of castings of high-loaded details of responsible use fill in a chemically neutral form: of cast housings of aircraft engines, turbines, impellers etc.
Standards
| Name |
Code |
Standards |
| Non-ferrous metals, including rare metals, and their alloys |
В51 |
OST 1 90030-77 |
| Castings from non-ferrous metals and alloys |
В84 |
OST 1 90060-92 |
Chemical composition
| Standard |
C |
Si |
Fe |
N |
Al |
Ti |
Mo |
W |
O |
Zr |
H |
| OST 1 90030-77 |
≤0.15 |
0.3-0.35 |
≤0.3 |
≤0.05 |
5.6-7 |
The rest |
2.8-3.8 |
≤0.2 |
≤0.16 |
0.8-2 |
≤0.01 |
Ti is the basis.
According to OST 1 90030-77 the amount of other (not indicated) impurities should be no more than 0.30%. A partial replacement of molybdenum by tungsten in an amount of no more than 0.30% is allowed, but the total content of molybdenum and tungsten should not exceed the norms specified for molybdenum. The total content in the alloy of chromium and manganese is allowed not more than 0.15%. The total content of copper and nickel in the alloy is allowed in an amount not exceeding 0.10%, including nickel not more than 0.080%.
Mechanical characteristics
| sT|s0,2, MPa |
σB, MPa |
d |
y, % |
kJ/m2, кДж/м2 |
| Casting as supplied after annealing |
| ≥814 |
932-1128 |
≥4 |
≥8 |
≥196 |
Description mechanical marks
| Name |
Description |
| sT|s0,2 |
Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2% |
| σB |
Limit short-term strength |
| d |
Elongation after rupture |
| y |
The relative narrowing |
| kJ/m2 |
Toughness |
