Alloy AO3-7

Designation

Name The value
Designation GOST Cyrillic АО3-7
Designation GOST Latin AO3-7
Transliteration AO3-7
By chemical elements -

Description

Alloy AO3−7 is used: for castings monometallic liners and sleeves.

Note

The recommended modes of operation:
— load ≤ 19,5 Mn/m2 (200 kg/cm2);
— sliding speed ≤ 15 m/s;
— temperature ≤ 100 °C;
— recommended shaft hardness ≥ 320 HB.
On an antifriction layer of articles coated with a soft metal or a polymer antifriction coating thickness of from 0.003 to 0.03 mm. permitted by agreement with the consumer in technically justified cases to cover the product with a soft metal or polymer coating.

Standards

Name Code Standards
Non-ferrous metals, including rare, and their alloys В51 GOST 14113-78

Chemical composition

Standard Mn Si Fe Cu Al Zn Sn Mg
GOST 14113-78 0.5-0.8 0.6-1.2 ≤0.5 7-8.5 Rest ≤0.2 2.5-3.5 ≤0.35
Al is the base.
According to GOST 14113-78 for an alloy smelted in cast-iron crucibles, the content of iron admixture is allowed up to 0.70%.