Aluminium Alloy 7050 Bolting Products
Aluminium Alloy 7050 is listed in the ALUMINIUM ALLOY material family. The reference data below should be checked against the governing product specification, product form and delivery condition before selection or certification.
The reference chemistry table for Aluminium Alloy 7050 lists Aluminium (Al): Remainder; Zinc (Zn): 5.7 – 6.7%; Copper (Cu): 2.0 – 2.6%; Magnesium (Mg): 1.9 – 2.6%. Confirm exact limits and analysis tolerances against the governing standard and product form.
The mechanical-property table for Aluminium Alloy 7050 lists Tensile Strength: 490 – 550 MPa; Yield Strength: 430 – 510 MPa; Elongation: 7 – 13 %; Hardness: Approx. 120 – 150 HB. These are reference entries; supplied condition, dimensions, test method and governing specification control the requirements, and the figures are not design allowables.
Werkstoff / EN cross-reference for Aluminium Alloy 7050: 3.4144. This comparison does not guarantee interchangeability; confirm chemistry, product form and condition against the governing specification.
View Technical Information →Standard identification and material designation information for Aluminium Alloy 7050.
The reference chemistry table lists Aluminium (Al): Remainder; Zinc (Zn): 5.7 – 6.7%; Copper (Cu): 2.0 – 2.6%; Magnesium (Mg): 1.9 – 2.6%. Confirm the governing standard, product analysis tolerances and product form before ordering.
| Element | Symbol | Composition |
|---|---|---|
| Aluminium | Al | Remainder |
| Zinc | Zn | 5.7 – 6.7% |
| Copper | Cu | 2.0 – 2.6% |
| Magnesium | Mg | 1.9 – 2.6% |
| Zirconium | Zr | 0.08 – 0.15% |
| Iron | Fe | 0.15% Max |
| Silicon | Si | 0.12% Max |
| Other Elements | — | Limited according to applicable specification |
The table reports Tensile Strength: 490 – 550 MPa; Yield Strength: 430 – 510 MPa; Elongation: 7 – 13 %; Hardness: Approx. 120 – 150 HB as reference data for Aluminium Alloy 7050. Actual requirements depend on condition, dimensions, test method and specification; these values are not design allowables.
| Property | Value | Unit |
|---|---|---|
| Tensile Strength | 490 – 550 | MPa |
| Yield Strength | 430 – 510 | MPa |
| Elongation | 7 – 13 | % |
| Hardness | Approx. 120 – 150 | HB |
Aluminium Alloy 7050 is a high-strength heat-treatable aluminium-zinc-magnesium-copper alloy designed for thick-section aerospace structures and high-stress applications.
Provides high strength after suitable heat treatment and ageing.
Developed with aerospace applications where thick-section performance matters.
Offers improved stress-corrosion resistance relative to some older 7xxx grades when appropriately tempered.
Suitable for demanding cyclic structural service when properly specified.
Aluminium Alloy 7050 is selected for applications that match its specific strength, corrosion, forming, machining and service characteristics.
Used for wing and fuselage structural components and other highly loaded parts.
Suitable for thick-section frames, bulkheads and fittings.
Used for highly loaded machined and forged aluminium parts.
Applied to specialized high-strength structural components.
Mechanical and corrosion properties depend critically on the specified temper.
Heat treatment parameters should be selected for the actual section thickness and governing specification.
Use appropriate protection and isolation in corrosive environments.
The commonly listed Werkstoff / EN cross-reference for Aluminium Alloy 7050 is 3.4144. Treat this as a grade comparison, not a guarantee of interchangeability. Verify chemistry, product form, condition and governing specification against the supplier certificate before substitution.
Yes. It is a precipitation-hardening aluminium alloy.
It provides useful stress-corrosion performance for a high-strength 7xxx alloy, but corrosion protection is still important.
Typical uses include thick-section aerospace structures, frames, bulkheads, fittings and highly loaded components.
Our engineering team can help you select suitable materials based on operating temperature, pressure and service conditions.