Alloy AO9-2

Designation

Name The value
Designation GOST Cyrillic АО9-2
Designation GOST Latin AO9-2
Transliteration AO9-2
By chemical elements -

Description

Alloy AO9−2 is used: for castings monometallic liners and sleeves.

Note

The recommended modes of operation:
— load ≤ 24,5 Mn/m2 (250 kgf/cm2);
— sliding speed ≤ 15 m/s;
— temperature ≤ 100 °C;
— recommended shaft hardness ≥ 250 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 Si Ni Fe Cu Al Sn
GOST 14113-78 0.3-0.7 0.8-1.2 ≤0.5 2-2.5 Rest 8-10
Al is the base.
According to GOST 14113-78, the content of other impurities, individually, should be ≤ 0.050%, and the total content of other impurities should be ≤ 0.10%.

Mechanical properties

Section, mm sT|s0,2, MPa σU, MPa d5, % HB, MPa
Casting in a metal mold in the state of delivery
78-105 130-170 2.3-6.3 50-60

Description mechanical marks

Name Description
sT|s0,2 Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2%
σU Limit short-term strength
d5 Elongation after rupture
HB Brinell hardness number