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Alloy MA18

Alloy MA18 Alloy MA21 (IMV2)

Designation

Name The value
Designation GOST Cyrillic МА18
Designation GOST Latin MA18
Transliteration MA18
The chemical elements CuAl18

Description

Alloy MA18 is used: for the manufacture of semi-finished products (sheets, plates, bars, rods, profiles, strips, tubes, wire, stampings and forgings) by hot deformation, as well as ingots and slabs intended for the production of lightly loaded parts operating at temperatures from -253 °C to +60 °C when you want high stiffness and low weight.

Standards

Name Code Standards
Non-ferrous metals, including rare metals, and their alloys В51 GOST 14957-76

Chemical composition

Standard Mn Si Ni Fe Cu Al Zn Ce Mg Be Na Li K
GOST 14957-76 0.1-0.4 ≤0.15 ≤0.005 ≤0.05 ≤0.05 0.5-1 2-2.5 0.15-0.35 The rest ≤0.002 ≤0.01 10-11.5 ≤0.005
Mg is the basis.
According to GOST 14957-76 the mass fraction of other impurities is ≤ 0.30%. "Other impurities" include impurities whose permissible content limits are not indicated (≤), as well as impurities not included in the table, the content of which is not determined. Beryllium is not determined, but is introduced by calculation.

Mechanical characteristics

Section, mm sT|s0,2, MPa σB, MPa d5, % y, % Brinell hardness number, MPa
Rolled steel in the delivery state
≥150 ≥185 ≥30.5 ≥60 ≥60

Description mechanical marks

Name Description
Section Section
sT|s0,2 Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2%
σB Limit short-term strength
d5 Elongation after rupture
y The relative narrowing

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