Alloy Ak8l (АЛ34)

Designation

Name	The value
Designation GOST Cyrillic	АК8л
Designation GOST Latin	AK8l
Transliteration	AK8l
By chemical elements	-

Name	The value
Designation GOST Cyrillic	АЛ34
Designation GOST Latin	AL34
Transliteration	AL34
By chemical elements	-

Description

Alloy Ak8l used: for the manufacture of various ingots and shaped castings by various casting methods (sand casting, investment casting, gravity die casting).

Note

Aluminum foundry alloy of the system Al-Si-Mg. The alloy has high integrity.

Standards

Name	Code	Standards
Non-ferrous metals, including rare, and their alloys	В51	GOST 1583-93
Castings, non-ferrous metals and alloys	В84	OST 1 80029-83

Chemical composition

Standard	Mn	Si	Fe	Cu	Al	B	Ti	Zn	Zr	Mg	Be
GOST 1583-93	≤0.1	6.5-8.5	≤0.6	≤0.3	Rest	≤0.1	0.3	≤0.3	≤0.2	0.35-0.55	0.15-0.4

Al is the base.
According to GOST 1583-93, the iron content is specified for casting in sand molds and for investment models. The iron content during casting in the mold is ≤ 0.60%. The amount of allowable impurities should be for casting in sand molds and for investment models ≤ 1.00%, casting in chill molds ≤ 1.00%

Mechanical properties

σ_U, MPa	d	HB, MPa
Castings are supplied without heat treatment
≥206	≥2	≥70
Casting. Mode T1: Artificial aging at 185-195 °C (extract 3-4 hours)
≥225	≥1	≥80
Casting. Mode T2: Annealing at 290-310 °C (2-4 h exposure)
≥176	≥2.5	≥60
Casting. Mode T4: Quenching in water from 530-540 °C (10-16 h aging)
≥255	≥4	≥70
≥274	≥6	≥80
Casting. Mode T5: Quenching in water from 530-540 °C (aging 10-16 h) + artificial aging at 170-180 °C (6 h exposure)
≥294	≥2	≥85
≥333	≥4	≥90

Description mechanical marks

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

Physical characteristics

Temperature	r, kg/m³	R, Mr. · m
20	2630	462

A description of the physical symbols

Name	Description
l	Coefficient of thermal conductivity
С	Specific heat