Alloy ML11

Designation

Name The value
Designation GOST Cyrillic МЛ11
Designation GOST Latin ML11
Transliteration ML11
By chemical elements CuЛ11

Description

ML11 alloy used: for the manufacture of castings parts that require high containment and experiencing high loads with maximum working temperature of +250 °C — long, +300 °C short — term.

Note

High-temperature alloy system MD-REE-Zr. For alloying of the alloy of the rare earth metals cerium mischmetal used (75% Se and 25% other REE cerium group). The alloy contains also supplements of zinc and zirconium.
ML11 alloy doped by zeraphim a Misch metal, has lower mechanical properties at room temperature. Its technological and casting properties are close alloys with neodymium, the castings have high integrity.

Standards

Name Code Standards
Non-ferrous metals, including rare, and their alloys В51 GOST 2856-79
Castings, non-ferrous metals and alloys В84 OST 1 90248-77

Chemical composition

Standard Si Ni Fe Cu Al Zn Zr Mg Be
GOST 2856-79 ≤0.03 ≤0.005 ≤0.02 ≤0.03 ≤0.02 0.2-0.7 0.4-1 Rest ≤0.001
Mg is the basis.
According to GOST 2856-79 the sum of REM should be within the range of 2.50-4.00%. The content of other impurities is ≤ 0.12%, the sum of detectable impurities is 0.20%.

Mechanical properties

Section, mm sT|s0,2, MPa σU, MPa d5, %
Casting in sand, shell, investment casting and plaster mold and chill casting GOST 2856-79. Without heat treatment
≥70 ≥120 ≥1.5
Casting in sand, shell, investment casting and plaster mold and chill casting GOST 2856-79. Mode T2: Annealing
≥70 ≥120 ≥1.5
Casting in sand, shell, investment casting and plaster mold and chill casting GOST 2856-79. Mode T4: Homogenization + annealing in air
≥85 ≥140 ≥3
Casting in sand, shell, investment casting and plaster mold and chill casting GOST 2856-79. T6 mode: Homogenization + annealing at air + aging
≥100 ≥140 ≥2

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
d5 Elongation after rupture