Brass LC30A3 (ЛА67-2,5)

Designation

Name	The value
Name	The value
Designation GOST Cyrillic	ЛЦ30А3
Designation GOST Latin	LTs30A3
Transliteration	LTs30A3
By chemical elements	ЛZn30Al3

Name	The value
Name	The value
Designation GOST Cyrillic	ЛА67-2,5
Designation GOST Latin	LA67-2,5
Transliteration	LA67-25
By chemical elements	ЛAl67-2,5

Description

Brass LC30A3 used: for the manufacture of castings of corrosion-resistant parts used in engineering, shipbuilding, marine engineering and instrument making.

Note

Brass aluminum.

Standards

Name	Code	Standards
Name	Code	Standards
Non-ferrous metals, including rare, and their alloys	В51	GOST 17711-93, GOST Р 50425-92
Castings, non-ferrous metals and alloys	В84	OST 1 90046-72, OST 5Р.9209-82

Chemical composition

Standard	P	Mn	Si	Ni	Fe	Cu	Al	Zn	Sn	Sb	Pb
Standard	P	Mn	Si	Ni	Fe	Cu	Al	Zn	Sn	Sb	Pb
GOST 17711-93	≤0.05	≤0.5	-	≤0.3	≤0.8	66-68	2-3	Rest	≤0.7	≤0.1	≤0.7
OST 5Р.9209-82	≤0.05	≤0.5	≤0.3	-	≤0.8	66-68	2-3	Rest	≤0.7	≤0.1	≤0.7

Zn is the basis.
According to GOST 17711-93 and OST 5P.9209-82, the total share of impurities should be ≤ 2.6%. Impurities not specified are taken into account in the total amount of impurities.

Mechanical properties

σ_U, MPa	d₅, %	KCU, kJ/m²	HB, MPa
σ_U, MPa	d₅, %	KCU, kJ/m²	HB, MPa
Castings are supplied without heat treatment
≥392	≥15	≥783	≥90
≥294	≥12	≥784	≥80
Casting investment casting according to OST 1 90046-72 (samples separately cast or cut from castings)
≥294	≥15	-	≥90

Description mechanical marks

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