Alloy ВТ21Л

Designation

Name The value
Designation GOST Cyrillic ВТ21Л
Designation GOST Latin BT21L
Transliteration VT21L
By chemical elements ВTe21

Description

Alloy ВТ21Л used: for the manufacture of castings of high-loaded details of responsible use fill in a chemically neutral form.

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 Cr Si Fe N Al V Ti Mo W O Zr H
OST 1 90030-77 ≤0.12 0.2-0.5 ≤0.2 ≤0.5 ≤0.05 5.8-7.2 0.8-1.5 Rest 0.4-1 ≤0.2 ≤0.15 4-5 ≤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%.

Mechanical properties

sT|s0,2, MPa σU, MPa d y, % KCU, kJ/m2
Casting as supplied after annealing
≥844 981-1080 ≥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