Alloy ВТ9Л

Designation

Name The value
Designation GOST Cyrillic ВТ9Л
Designation GOST Latin BT9L
Transliteration VT9L
By 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, and their alloys В51 OST 1 90030-77
Castings, 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 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 properties

sT|s0,2, MPa σU, MPa d y, % KCU, kJ/m2
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%
σU Limit short-term strength
d Elongation after rupture
y The relative narrowing
KCU Toughness