Alloy AK8M3

Designation

Name The value
Designation GOST Cyrillic АК8М3
Designation GOST Latin AK8M3
Transliteration AK8M3
By chemical elements -

Description

Alloy AK8M3 used: for the manufacture of a molding force and pressure parts operating at temperatures up to +250 °C.

Note

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

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 Mg
GOST 1583-93 ≤0.5 7.5-10 ≤0.5 ≤1.3 2-4.5 Rest ≤1.2 ≤0.45
Al is the base.
According to GOST 1583-93, the iron content is specified for injection molding. Other methods, as a rule, castings from this alloy are not produced. The amount of allowable impurities should be for injection molding ≤ 4,20%. The total content of lead and tin should be ≤ 0.30%.

Mechanical properties

σU, MPa d HB, MPa
Casting. Without heat treatment
≥147 ≥1 ≥70
Casting. T6 mode: Quenching in water from 490-510 °C (delay of 5-7 h) + Complete artificial aging at 170-190 °C (extract 5-10 h)
≥216 ≥0.5 ≥90

Description mechanical marks

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