Alloy MA11

Designation

Name	The value
Designation GOST Cyrillic	МА11
Designation GOST Latin	MA11
Transliteration	MA11
By chemical elements	CuAl11

Description

Alloy MA11 is used: for the manufacture of semi-finished products (sheets, plates, bars, rods, profiles, strips, tubes, wire, stampings and forgings) by hot deformation, as well as ingots and slabs for the manufacture of the parts, the heating in the process of operation with maximum operating temperatures up to +250 °C — long, up to +300 °C short — term.

Standards

Name	Code	Standards
Non-ferrous metals, including rare, and their alloys	В51	GOST 14957-76

Chemical composition

Standard	Mn	Si	Ni	Fe	Cu	Al	Zn	Nd	Mg	Be
GOST 14957-76	1.5-2.5	≤0.1	0.1-0.22	≤0.03	≤0.03	≤0.1	≤0.2	2.5-3.5	Rest	≤0.002

Mg is the basis.
According to GOST 14957-76 the mass fraction of other impurities is ≤ 0.30%. "Other impurities" include impurities whose permissible content limits are not indicated (≤), as well as impurities not included in the table, the content of which is not determined. Beryllium is not determined, but is introduced by calculation.

Mechanical properties

Section, mm	s_T\|s_0,2, MPa	σ_U, MPa	d₅, %
Rolled steel in the delivery state
	130-160	260-280	5-14

Description mechanical marks

Name	Description
s_T\|s_0,2	Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2%
σ_U	Limit short-term strength
d₅	Elongation after rupture

Physical characteristics

Temperature	Е, HPa	r, kg/m³	l, W/(m · °C)	R, Mr. · m	a, 10^-6 1/°C
20	42	1800	1088	62	-
100	-	-	-	-	257
200	-	-	-	-	275

A description of the physical symbols

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