Aluminium A7
Designation
| Name |
The value |
| Designation GOST Cyrillic |
А7 |
| Designation GOST Latin |
A7 |
| Transliteration |
A7 |
| The chemical elements |
- |
Description
Aluminium A7 applies: for the production of pigs, ingots, wire rod, flat ingots, cast by semi-continuous method or continuous casting, and is intended for rolling into sheets, strips and other semi-finished products; extruded pipes with controlled inner diameter from 14 to 42 mm for heat exchangers; heat exchangers evaporators and condensers with two-sided bulge of the channel used in domestic refrigerators and freezers; roll foil used for thermal, hydro and sound insulation; aluminum Kommandos powder brands APS-1A and APS-1B, APS-2, APS-3, designed for the manufacture of teploperenosa deformable material type SAP.
Note
Aluminium technical purity.
Aluminum grade A7 corresponds to the chemical composition of the marches of aluminium EN AW-1070А established in the European standard EN 573−3-94 and grades 1070 and 1170А, registered by the American aluminum Association.
Standards
| Name |
Code |
Standards |
| Solid alloys, metal-ceramic products and powders, metal |
В56 |
GOST 10096-76 |
| Tapes |
В54 |
GOST 13726-97, TU 1-1-98-88, TU 1-2-133-77, TU 1-2-432-82 |
| Pipes from non-ferrous metals and alloys |
В64 |
GOST 18482-79, TU 1-3-67-90, TU 1-3-67-98 |
| Sheets and stripes |
В53 |
GOST 618-73, GOST 17232-99, GOST 21631-76, GOST 25001-81, OST 4.021.047-92, OST 4.021.092-92, TU 48-21-22-81, TU 48-21-750-83, TU 1-8-186-2006 |
| Sectional and shaped rolling |
В52 |
GOST 8617-81, 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 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 9498-79, GOST 11069-2001, GOST 11070-74, GOST 19437-81, OST 4.021.009-92 |
Chemical composition
| Standard |
Mn |
Si |
Fe |
Cu |
Al |
Ti |
Zn |
Mg |
| GOST 11069-2001 |
≤0.03 |
≤0.15 |
≤0.16 |
≤0.01 |
≥99.7 |
≤0.01 |
≤0.04 |
≤0.02 |
Al is the base.
According to GOST 19437-81 and GOST 11069-2001, the Ga content is ≤ 0.030%. The content of other impurities (individually) is ≤ 0.020%. The total content of all impurities is ≤ 0.30%.
Mechanical characteristics
| Section, mm |
σB, MPa |
d5, % |
d |
d10 |
| Sheet metal in delivery condition according to GOST 21631-76, OST 4.021.047-92 tape according to GOST 13726-97 (samples transverse) |
| 5-10.5 |
≥70 |
- |
≥15 |
- |
| 0.3-0.5 |
≥60 |
- |
≥20 |
- |
| 0.5-0.9 |
≥60 |
- |
≥25 |
- |
| 0.9-10.5 |
≥60 |
- |
≥30 |
- |
| 0.3-0.8 |
≥145 |
- |
≥3 |
- |
| 0.8-3.5 |
≥145 |
- |
≥4 |
- |
| 3.5-10.5 |
≥135 |
- |
≥5 |
- |
| 0.8-4.5 |
≥100 |
- |
≥6 |
- |
| Sheet metal as supplied at OST 4.021.047-92 (samples transverse) |
| 0.5-0.8 |
≥60 |
- |
≥25 |
- |
| 1-10 |
≥60 |
- |
≥30 |
- |
| 0.5-0.8 |
≥145 |
- |
≥3 |
- |
| 0.8-3.5 |
≥145 |
- |
≥4 |
- |
| 3.5-10 |
≥130 |
- |
≥5 |
- |
| Plates according to GOST 17232-99. 4.021.061-92 supplied without heat treatment (samples transverse) |
| 11-25 |
≥78 |
≥18 |
- |
- |
| 25-80 |
≥64 |
≥15 |
- |
- |
| Extruded aluminum tubes with internal diameter control for heat exchangers as supplied without a heat treatment on the other 1-3-67-90 (in the section you specify an internal pipe diameter) |
| 14-42 |
59-98 |
- |
≥28 |
- |
| Tubes extruded in the state of delivery according to GOST 18482-79 (samples, in cross-section shows the thickness of the wall) |
|
≥60 |
- |
- |
≥20 |
| Foil as supplied by OST 4.021.092-92 (samples) |
| 0.007-0.011 |
≥30 |
- |
- |
- |
| 0.011-0.045 |
≥35 |
- |
≥2 |
- |
| 0.045-0.2 |
≥40 |
- |
≥3 |
- |
| 0.007-0.045 |
≥100 |
- |
- |
- |
| 0.045-0.2 |
≥120 |
- |
- |
- |
Description mechanical marks
| Name |
Description |
| Section |
Section |
| σB |
Limit short-term strength |
| d5 |
Elongation after rupture |
| d |
Elongation after rupture |
| d10 |
Elongation after rupture |
