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Alloy MA1

Designation

Name The value
Designation GOST Cyrillic МА1
Designation GOST Latin MA1
Transliteration MA1
The chemical elements CuAl1

Description

Alloy MA1 is used: for the manufacture of semi-finished products (sheets, plates, rods, sheets, tubes, wire, stampings and forgings) by hot deformation, the extruded profiles with the cross-sectional area up to 12 cm2 and a diameter of the circumscribed circle of up to 150 mm; ingots and slabs intended for the production of welded parts with a simple configuration, parts of valves, petrol and macrosystem that do not carry heavy loads with maximum operating temperatures up to +150 °C — long, up to +200 °C — short-term.

Standards

Name Code Standards
Sectional and shaped rolling В52 GOST 13616-97, GOST 13617-97, GOST 13618-97, GOST 13619-97, GOST 13620-90, GOST 13621-90, GOST 13622-91, GOST 13623-90, GOST 13624-90, GOST 13737-90, GOST 13738-91, GOST 17575-90, GOST 17576-97, GOST 19657-84, GOST 29296-92, GOST 29303-92, GOST Р 50066-92, GOST Р 50067-92, GOST Р 50077-92
Non-ferrous metals, including rare metals, and their alloys В51 GOST 14957-76
Bars В55 GOST 18351-73

Chemical composition

Standard Mn Si Ni Fe Cu Al Zn Mg Be
GOST 14957-76 1.3-2.5 ≤0.1 ≤0.007 ≤0.05 ≤0.05 ≤0.1 ≤0.3 The rest ≤0.002
Mg is the basis.
According to GOST 14957-76, the mass fraction of other impurities is ≤ 0.20%. "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 d Brinell hardness number, MPa
Rolled steel in the delivery state
120-140 190-220 5-10 ≥40
Extruded GOST 19657-84 without heat treatment in the state of delivery
- ≥215 ≥2 ≥40
Bars and rods, hot-pressed in the delivery condition without heat treatment according to GOST 18351-73 (longitudinal samples)
100-160 - ≥175 ≥2 -
160-200 - ≥165 ≥2 -
8-100 - ≥195 ≥2 -

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
d Elongation after rupture

Physical characteristics

Temperature Е, ГПа r, кг/м3 l, Вт/(м · °С) R, НОм · м
20 42 1760 1256 61

A description of the physical symbols

Name Description
Е The normal elasticity modulus
r Density
l Coefficient of thermal conductivity
С Specific heat

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