Prodsuct Introdsuction
An Aluminium Alloy with the Strength of Steel
7068 alloy provides the highest mechanical strength of all aluminium alloys and matching that of certain steels.
This outstanding alloy combines a yield strength of up to 700 MPa (up to over 30% greater than that of 7075 alloys) and good ductility with corrosion resistance similar to 7075 and other features beneficial to high-performance component/equipment designers. Developed in the mid-1990s, 7068 alloys was designed as a higher strength alternative to 7075 for ordnance applications.
Prodsuct Parameter
| Chemical Composition (weight %) | |||||||||||
| Si | Fe | Cu | Mn | Mg | Gr | Zn | Ti | Zr | Each | Total | |
| Min. | 1.6 | 2.2 | 7.3 | 0.05 | |||||||
| Max. | 0.12 | 0.15 | 2.4 | 0.10 | 3.0 | 0.05 | 8.3 | 0.10 | 0.15 | 0.05 | 0.15 |
| Minimum Mechanical Properties (Extruded Bar) | ||||
| Temper | Section (in) | UTS (MPa) | YTS (MPa) | Elongation (%) |
| T6 / T6511 | 0.250 - 3.000 | 683 | 655 | 5 |
| T6 / T6511 | 3.001 - 6.500 | 648 | 621 | 5 |
| T76 / T76511 | 0.250 - 3.000 | 593 | 552 | 7 |
| Typical Mechanical Properties | ||||
| UTS (MPa) | YTS (MPa) | Elongation (%) | Brinell Hardness | |
Extruded Bar T6511 | ||||
| L Direction | 710 | 683 | 9 | 190 |
| LT Direction | 645 | 603 | 7 | - |
| Forging T6 | ||||
| L Direction | 628 | 524 | 10 | 160 |
| Typical Physical Properties | |
| Density at 20°C | 2.85 kg/dm³ |
| Melting Range | 476 - 635°C |
| Specific Thermal Capacity at 100°C | 1050 J.Kg¯¹ .K¯¹ |
| Mean Coefficient of Thermal Expansion ( 20 - 100°C ) | 23.4 10¯⁶ .K¯¹ |
| Thermal Conductivity at 20°C | 190 W.m-1.K¯¹ |
| Electrical Conductivity at 20°C T6511 | 31 % IACS |
| T76511 | 39 % IACS |
| Young’s Modulus | 73.1 GPA |
Prodsuct feature
The highly attractive overall combination of mechanical properties (retained at elevated temperatures better than 7075) and other important characteristics of 7068 have resulted in the widespread specification of the alloy to markedly reduce the weight/cross-section or significantly increase the strength of critical components in diverse market sectors.
An Aluminium Zinc Alloy
7068 alloy is a 7000 series aluminium-zinc alloy registered with the US Aluminium Association and prodsuced to AMS 4331 (chemical composition and mechanical properties) and AMS 2772 (heat treatment).
Prodsuct application
Typical Applications:
Connecting rodss, autosport gearbox actuators, automobile shock absorbers, fuel pumps for racing engines, rocker arms for racing engines, motorcycle gears, racing motorcycle chain tensioners, bearing caps in high-performance engines, autosport wheel components, prosthetic limbs, ordnance, load cells, hydraulic valve components, high-pressure solenoid, mountain climbing equipment, tent, ski and backpack rodss, survival rifles, flexible shaft coupling, snowmobile engine shaft, quick disconnects for fluid conveying devices.
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