Alloy Ak9s used: for the manufacture of ingots and shaped castings by various casting methods (sand casting, investment casting, gravity die casting, pressure casting).

Note

Aluminum foundry alloy of the system Al-Si-Mg.

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	Ni	Fe	Cu	Al	Zn	Sn	Pb	Mg
GOST 1583-93	0.2-0.5	8-10.5	≤0.1	≤0.7	≤0.5	Rest	≤0.3	≤0.01	≤0.05	0.2-0.35

Al is the base.
According to GOST 1583-93, the iron content is specified for casting in sand molds and for investment models. The content of iron during casting into the mold is ≤ 0.90%, when casting under pressure ≤ 1.00%. The amount of allowable impurities should be for casting in sand molds and for investment models ≤ 1,350%, casting in chill molds ≤ 1,70%, injection molding ≤ 1,80%.

Mechanical properties

σ_U, MPa	d	HB, MPa
Casting (gravity die casting, pressure) in the delivery condition. Without heat treatment
≥147	≥2	≥50
Casting in a metal mold. Mode T1: Artificial aging at 170-180 °C (excerpt 5-17 hours)
≥196	≥1.5	≥70
Casting in a metal mold. T6 mode: Quenching in water from 530-540 °C (extract 2-6 h) + Artificial aging at 170-180 °C (extract 10-15 hours)
≥235	≥3.5	≥70

Description mechanical marks

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

Alloy Ak9s

Designation

Description

Note

Standards

Chemical composition

Mechanical properties

Description mechanical marks

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