Alloy AO20-1

Designation

Name The value
Designation GOST Cyrillic АО20-1
Designation GOST Latin AO20-1
Transliteration AO20-1
By chemical elements -

Description

Alloy AO20−1 is applied: to obtain a bimetal strip with steel and aluminum by rolling and subsequent punching of liners with a thickness of friction layer is less than 1 mm.

Note

The recommended modes of operation:
— load ≤ 29,5 Mn/m2 (300 kgf/cm2);
— sliding speed ≤ 20 m/s;
temperature ≤ 120 °C;
— recommended shaft hardness ≥ 200 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 Fe Cu Al Ti Zn Sn
GOST 14113-78 ≤0.5 ≤0.5 0.7-1.2 Rest 0.02-0.2 ≤0.25 17-23
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, % y, % KCU, kJ/m2 HB, MPa
Casting in a metal mold in the state of delivery
65-77 100-120 29-35 58.5-72 600-750 28-33

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
y The relative narrowing
KCU Toughness
HB Brinell hardness number