АK6 (ака6)
AK6 Aluminium — Defense-Grade Strength for Military & Heavy-Duty Structures
AK6 aluminium is a high-strength Al-Cu-Mg-Si wrought aluminium alloy engineered for defense, aviation, and heavy-duty industrial structures where a superior strength-to-weight ratio, reliable toughness, and stable machinability are essential. Russian Metals supplies AK6 bars, plates, profiles, and pipes in India with certification and mill test reports for mission-critical builds.
Overview of AK6 Aluminium
AK6 Aluminium is a high-strength aluminum alloy belonging to the Al-Cu-Mg-Ni system.
Originally developed in Russia, AK6 alloy is comparable to Western grades such as AA2618 or EN AW-2618A.
- • High tensile and yield strength, even at elevated temperatures
- • Excellent fatigue resistance for cyclic loading applications
- • Outstanding heat resistance due to nickel and copper alloying
- • Suitable for heat treatment (T1, T6, T7)
Characteristics for grade АK6 (АК6)
| Grade : | АK6 (АК6) (1360 АКД6) |
| Classification : | Aluminium wrought alloys |
| Equivalent grades: | Go here |
Chemical composition in % for grade AK6
| Fe | Si | Mn | Ni | Ti | Al | Cu | Mg | Zn | Impurity |
|---|---|---|---|---|---|---|---|---|---|
| max 0.7 | 0.7 - 1.2 | 0.4 - 0.8 | max 0.1 | max 0.1 | 93.3 - 96.7 | 1.8 - 2.6 | 0.4 - 0.8 | max 0.3 | other, each 0.05; all 0.1 |
Mechanical properties under T=20°C for grade AK6
| Assortment | Dimension | σb | σT | δ5 | ψ | KCU | Heat Treatment |
|---|---|---|---|---|---|---|---|
| - | mm | MPa | MPa | % | - | kJ/m² | - |
| Pipe, GOST 18482-79 | 285-355 | 8-10 | Quenching and artificial aging | ||||
| Bar, GOST 21488-97 | 355 | 12 | Quenching and artificial aging | ||||
| Bar, GOST 51834-2001 | 390-430 | 275-325 | 10 | Quenching and artificial aging | |||
| Profile, GOST 8617-81 | 353 | 12 | Quenching and artificial aging |
Brinell hardness for АK6 (АК6) HB 10⁻¹ = 95 - 100 MPa
Physical properties for grade AK6
| T | E 10⁻⁵ | α 10⁶ | λ | ρ | C | R 10⁹ |
|---|---|---|---|---|---|---|
| Grade | MPa | (1/Grade) | (Watt/m·Grade) | (kg/m³) | (J/kg·Grade) | (Ohm·m) |
| 20 | 0.72 | 21.4 | 180 | 2750 | 838 | 41 |
| 100 | - | - | - | - | - | - |
Equivalent steels for grade AK6
| USA | Japan | France | England | European | Italy | Poland | Czechia |
|---|---|---|---|---|---|---|---|
| - | JIS | AFNOR | BS | EN | UNI | PN | CSN |
| 2117 | 2117 | A-U2G | L86 | ENAW-AlCuMg0.5 | P-AlCu2.5MgSi | AlCu2SiMn | 424206 |
Standards, Grades & Equivalents
Common designations: AK6, АК6 (1360, AKD6)
EN: ENAW-AlCuMg0.5
Equivalent / close grades: A-U2G, L86, P-AlCu2.5MgSi, AICu2SiMn, 2117
Typical references: GOST 4784, GOST 8617, GOST 18482, GOST R 51834
Heat Treatment
Solution treatment → quench → artificial aging
Optimized cycles available according to application.
Applications of AK6 Aluminium
Defense & Military (Primary)
- Armored vehicle structures & brackets
- Fixtures, frames, carrier rails
- Heat-cycled parts
Aerospace & Aviation
- Fittings, ribs, brackets
- Weight-sensitive parts
- Aviation structures
Industrial Uses
- Machine bases and jigs
- Heavy-duty profiles
- Industrial assemblies
Fabrication & Machinability
Good machinability after aging
Compatible with forging, extrusion, machining.
Weldability: controlled procedure required.
Quality & Certification
Mill Test Certificates with full traceability.
Dimensional inspection available.
Conformance to GOST / EN / ASTM
Why AK6 from Russian Metals?
Defense-ready performance
Consistent machinability and good fatigue resistance.
Certified supply with full traceability.
India-wide delivery and export support.
Mechanical properties :
σB - Tensile strength [MPa]
σT - Yield stress [MPa]
δ5 - Elongation [%]
ψ - Reduction of area [%]
KCU - Impact strength [kJ/m²]
HB - Brinell hardness [MPa]
Physical properties :
T - Test temperature
E - Young modulus [MPa]
α - Coefficient of expansion
λ - Thermal conductivity
ρ - Density [kg/m³]
C - Specific heat
R - Electrical resistance
Contact Us for AK6 Aluminum Orders
For more information or to place an order, contact Russian Metals today. We specialize in GOST AK6 aluminium.