Alloy ML3

Designation

Name	The value
Designation GOST Cyrillic	МЛ3
Designation GOST Latin	ML3
Transliteration	ML3
By chemical elements	CuЛ3

Description

Alloy ML3 is used: for the manufacture of castings of parts of simple configuration and high containment (valves, parts of housings, pumps, etc.) with maximum operating temperature +150 °C; casting of parts subject to dynamic loads.

Note

Alloy system Mg-Al-Zn. The alloy has high integrity alloys of this group.
Aluminum and zinc increase the mechanical properties of the alloy (and the effect of aluminum effect is stronger than zinc) and manganese improves corrosion resistance. To reduce oxidation, the alloy is injected beryllium (0.002% when casting in sand molds and the mold and to 0.01% when casting under pressure).
The alloy has a broader crystallization range than alloys based on aluminum, therefore has a low castability. Due to the large interval of crystallization of the alloy is prone to hot cracks.

Standards

Name	Code	Standards
Non-ferrous metals, including rare, and their alloys	В51	GOST 2856-79

Chemical composition

Standard	Mn	Si	Ni	Fe	Cu	Al	Zn	Zr	Mg	Be
GOST 2856-79	0.15-0.5	≤0.25	≤0.01	≤0.06	≤0.1	2.5-3.5	0.5-1.5	≤0.002	Rest	≤0.002

Mg is the basis.
According to GOST 2856-79, the content of other impurities is ≤ 0.10%, the sum of the impurities to be determined is 0.50%.

Mechanical properties

Section, mm	σ_U, MPa	d₅, %
Casting in a sand mold without heat treatment according to GOST 2856-79
	≥160	≥6

Description mechanical marks

Name	Description
σ_U	Limit short-term strength
d₅	Elongation after rupture

Physical characteristics

Temperature	Е, HPa	r, kg/m³	l, W/(m · °C)	С, J/(kg · °C)
20	43	1780	1047	10467

A description of the physical symbols

Name	Description
Е	The normal elasticity modulus
l	Coefficient of thermal conductivity
R	UD. the resistivity