Aluminum 7050-Alloy range-HuiFeng

Product name

Aluminum 7050

7050 aluminum sheet is the preferred choice in aerospace applications where it requires the metal used to have good SCC (stress corrosion cracking) resistance, strength and toughness. It is typically used in sheet applications with a thickness between three and six inches. 7050 aluminum has higher corrosion resistance and better toughness compared to 7075 grade alloys. 7050 aluminum tends to be used in thicker profiles because of its lower quenching sensitivity compared to other aerospace aluminum alloys. This allows it to maintain strength characteristics, resistance to stress corrosion cracking and fracture toughness.

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The application fields where 7050 aluminum alloy is commonly used include baffles and fuselage frames. These application fields require the thickness of the aluminum alloy to be between 2 and 6 inches. Another common application is the wing skin. 7050 aluminum does not have good cold working properties, but can be machined. It also has a good anodic oxidation reaction. Welding methods such as brazing, gas shielded arc welding, or coated metal arc welding are not recommended for joining.

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Chemical Composition

Element	Content (%)
Aluminum, Al	87.3 – 90.3
Zinc, Z	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
Silicon, Si	≤ 0.12
Mangnese, Mn	≤ 0.10
Titanium, Ti	≤ 0.06
Chromium, Cr	≤ 0.04

Physical Properties

Property	Metric	Imperial
Density	2.6-2.8 g/cm3	0.0939-0.101 lb/in3
Melting Point	494°C	920°F

Mechanical Properties

Property	Metric	Imperial
Hardness, Brinell	140	140
Hardness, Knoop	177	177
Hardness, Rockewell A	51.6	51.6
Hardness, Rockwell B	84	84
Hardness, Vickers	162	162
Ultimate Tensile Strength	524 MPa	76000 psi
Tensile Yield Strength	469 MPa	68000 psi
Elongation at Break	11%	11%
Modulus of Elasticity	71.6 GPa	10400 ksi
Poisson’s Ratio	0.33	0.33
Shear Modulus	26.9 GPa	3900 ksi
Shear Strength	303 MPa	44000 psi

Thermal Properties

Property	Metric	Imperial
Specific Heat Capacity	0.860 J/g-°C	0.206 BTU/lb-°F
Thermal Conductivity	157 W/m-K	1090 BTU-in/hr-ft²-°F
Solidus	488 °C	910 °F
Liquidus	629.4 °C	1165 °F

Specifications

· AMS 4050: 7050-T7451 Plate

· AMS 4107:7050-T74 Die Forging

· AMS 4108:7050-T7452 Hand Forgings

· AMS 4201: 7050-T7651 Plate

· AMS 4333: 7050-T7452 Forgings

· AMS 4340: 7050-T76511 Extrusions

· AMS 4341: 7050-T73511 Extrusions

· AMS 4342: 7050-T74511 Extrusions

· ASTM B247

· ASTM B316

· QQ A-430

· DMS-2233

· BMS 7-323

Applications

• Fuselage frames
• Bulkheads
• Wing skins

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