Alloy AK5M7

Designation

Name The value
Designation GOST Cyrillic АК5М7
Designation GOST Latin AK5M7
Transliteration AK5M7
By chemical elements -

Description

Alloy AK5M7 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-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 4.5-6.5 ≤0.5 ≤1.2 6-8 Rest ≤0.6 0.2-0.5
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 for molding in the mold is ≤ 1.20%, when casting under pressure ≤ 1.30%. The amount of allowable impurities should be for casting in sand molds and for investment models ≤ 2.70%, casting in chill molds ≤ 2.70%, injection molding ≤ 3.00%. The total content of lead, tin and antimony should be ≤ 0.30%.

Mechanical properties

σU, MPa HB, MPa
Casting. Without heat treatment
≥127 ≥70
≥157 ≥70
≥118 ≥80
Casting. Mode T1: Artificial aging without prior tempering at 170-190 °C (exposure 1-5 hours)
≥147 ≥80
≥167 ≥90

Description mechanical marks

Name Description
σU Limit short-term strength
HB Brinell hardness number

Physical characteristics

Temperature r, kg/m3
20 2850

A description of the physical symbols

Name Description
l Coefficient of thermal conductivity