Alloy CA4

Designation

Name	The value
Designation GOST Cyrillic	ЦА4
Designation GOST Latin	TsA4
Transliteration	TsA4
By chemical elements	ZnAl4

Description

Alloy CA4 is used: for molding parts of automobile, tractor, electrical and other industries; casting parts of devices non-critical parts with stable dimensions.

Note

The alloy has good fluidity, good corrosion resistance (but less than the alloy Ca4o).

Standards

Name	Code	Standards
Non-ferrous metals, including rare, and their alloys	В51	GOST 19424-97, GOST 25140-93

Chemical composition

Standard	Si	Fe	Cu	Al	Zn	Sn	Pb	Mg	Cd
GOST 19424-97	≤0.015	≤0.05	≤0.03	3.5-4.3	Rest	≤0.002	≤0.01	0.03-0.06	≤0.005
GOST 25140-93	≤0.015	≤0.07	≤0.06	3.5-4.5	Rest	≤0.002	≤0.01	0.02-0.06	≤0.005

Zn is the basis.
According to GOST 19424-97 in the alloy for the production of pigs the mass fraction of the main components and specific impurities can be changed by agreement of the consumer with the manufacturer.
According to GOST 25140-93, the mass fraction of copper as an alloying element is allowed up to ≤ 0.10%. At the request of the consumer, the mass fraction of lead should be ≤ 0.006%.

Mechanical properties

Section, mm	σ_U, MPa	d₅, %	HB, MPa
Castings according to GOST 25140-93
	≥196	≥1.2	≥70
	≥256	≥1.8	≥70

Description mechanical marks

Name	Description
σ_U	Limit short-term strength
d₅	Elongation after rupture
HB	Brinell hardness number

Physical characteristics

Temperature	r, kg/m³	l, W/(m · °C)	a, 10^-6 1/°C	С, J/(kg · °C)
20	6700	113	-	410
100	-	-	260	-

A description of the physical symbols

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