Alloy MA14

Designation

Name	The value
Name	The value
Designation GOST Cyrillic	МА14
Designation GOST Latin	MA14
Transliteration	MA14
By chemical elements	CuAl14

Description

The MA14 alloy used: for the manufacture of semi-finished products (sheets, plates, rods, sheets, tubes, wire, stampings and forgings) by hot deformation; extruded sections with cross sectional area up to 12 cm² and a diameter of the circumscribed circle of up to 150 mm; ingots and slabs intended for the production of highly loaded parts operating with extreme operating temperature +150 °C — long, up to +200 °C — short-term.

Standards

Name	Code	Standards
Name	Code	Standards
Bars and shapes	В52	GOST 13616-97, GOST 13617-97, GOST 13618-97, GOST 13619-97, GOST 13620-90, GOST 13621-90, GOST 13622-91, GOST 13623-90, GOST 13624-90, GOST 13737-90, GOST 13738-91, GOST 17575-90, GOST 17576-97, GOST 19657-84, GOST 29296-92, GOST 29303-92, GOST Р 50066-92, GOST Р 50067-92, GOST Р 50077-92
Non-ferrous metals, including rare, and their alloys	В51	GOST 14957-76
Bars	В55	GOST 18351-73
Sheets and strips	В53	TU 1-4-058-79

Chemical composition

Standard	Mn	Si	Ni	Fe	Cu	Al	Zn	Zr	Mg	Be
Standard	Mn	Si	Ni	Fe	Cu	Al	Zn	Zr	Mg	Be
GOST 14957-76	≤0.1	≤0.05	≤0.005	≤0.03	≤0.05	≤0.05	5-6	0.3-0.9	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	d	HB, MPa
Section, mm	s_T\|s_0,2, MPa	σ_U, MPa	d	HB, MPa
Extruded GOST 19657-84. Artificial aging
	≥245	≥315	≥6	≥60
Bars and rods, hot-pressed as supplied artificially aged according to GOST 18351-73 (longitudinal samples)
100-160	≥235	≥305	≥6	-
160-200	≥175	≥265	≥4	-
8-100	≥245	≥315	≥6	-

Description mechanical marks

Name	Description
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
d	Elongation after rupture
HB	Brinell hardness number

Physical characteristics

Temperature	Е, HPa	r, kg/m³	l, W/(m · °C)	R, Mr. · m	a, 10^-6 1/°C	С, J/(kg · °C)
Temperature	Е, HPa	r, kg/m³	l, W/(m · °C)	R, Mr. · m	a, 10^-6 1/°C	С, J/(kg · °C)
20	42	1800	1172	56	-	-
100	-	-	-	-	209	10467
200	-	-	-	-	26	-

A description of the physical symbols

Name	Description
Name	Description
Е	The normal elasticity modulus
r	Density
l	Coefficient of thermal conductivity
С	Specific heat