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7075

Cold Drawn/Finished (CF) / AlZn5.5MgCu (Soğuk Çekim) / 7075 / T6

化学性质 % 值
Silicon (Si)0,00 - 0,40
Chromium (Cr)0,18 - 0,28
Manganese (Mn)0,00 - 0,30
Magnesium (Mg)2,10 - 2,90
Copper (Cu)1,20 - 2,00
Titanium (Ti)0,00 - 0,20
Iron (Fe)0,00 - 0,50
Zinc (Zn)5,10 - 6,10
Aluminium (Al)Balance
物理特性
Density2.81 g/cm³
Melting Point466 °C
Thermal Expansion23.4 µm/m.°C
Modulus of Elasticity71.7 GPa
Thermal Conductivity130 W/m.K
Electrical Resistivity%33 IACS
机械性能
Proof Strength480 MPa
Yield Strength560 MPa
Shear Strength330 MPa
Elongation A50 mm%8
Hardness150 HB

7075 T6 aluminum alloy stands out for its high strength and hardness, making it a favored choice in industries that demand high performance, such as aerospace, defense, and automotive. The T6 heat treatment condition maximizes both tensile strength and hardness, offering an excellent balance between lightness and durability. As a result, it is commonly used in aircraft wings, landing gear, fuselage components, motorsport parts, mold making, and various high-stress machinery applications.

This alloy is suitable for anodizing, which enhances surface quality and corrosion resistance. Although its weldability is relatively limited, mechanical fastening methods like riveting or bolting are often preferred. Still, welding can be performed in certain conditions with the right equipment, filler metals, and techniques. Despite its inherent hardness, the alloy can be bent to a limited degree through proper preheating and forming methods, allowing for some flexibility in production processes.

In environments with high vibrations and fatigue-inducing loads, 7075 T6 maintains its structural integrity over the long term, making it a reliable option for critical aerospace structures. Its natural corrosion resistance is further improved by anodizing, ensuring prolonged service life even in challenging conditions like marine, humid, or industrial atmospheres. These qualities make it suitable for both structural and functional components.

On the downside, the alloy’s high hardness and strength demand careful machining, requiring suitable tools and processes for cutting, drilling, or milling operations. While its advantages include high strength, light weight, corrosion resistance, compatibility with anodizing, and resilience in vibration-prone environments, its disadvantages involve limited weldability, restricted bendability, and the need for meticulous machining. Still, this balance makes 7075 T6 a strategic choice for applications where performance and reliability are paramount.

 

ALLOY DESIGNATIONS
 
7075 T6 has the following standard designations and specifications.

Sheet as; AMS QQ-A-250/12, AMS 4045,ASTM B209, EN 2696

Alclad Sheet as; AMS QQ-A-250/13,AMS 4049,ASTM B209, AIR 9048-280, BS 2 L88, WL 3.4374, DAN 424,EN 2092

Oneside Alclad Sheet as; AMS QQ-A-250/18, AMS 4154, ASTM B209

Extrusion Seamless Pipe as; AMS QQ-A-200/11, AMS 4154, ASTM B241

Extrusion  Rod, Flat Bar, Wire as; AMS QQ-A-200/11, AMS 4154, ASTM B221

Cold Drawn  Rod,Flat Bar,Wire as; AMS QQ-A-255/9,AMS 4122,ASTM B211

Cold Drawn Seamless Pipe as; AMS-T-700/7, ASTM B210

 

Alloy 7075, UNS A97075, AlZn5.5MgCu, DIN 3.4365, A-Z5GU

 

Choosing Factors for 7075 T6

  • Strength: Excellent
  • Machining: Good
  • Weldability: Poor
  • Formability: Modarate
  • Corrosion Resistance: Low 
  • Heat Treating: Yes
 
 

Some Well-Known Applications for 7075 T6:

It is used in manyplaces from supersonic aircraft to sewing machine apparatus .

Shoe injection mold, nuclear reactors.

Hundreds of industries as coil, spring, flange

 

SUPPLIED FORMS
 
7075 T6 is supplied in plate, sheet, bar and extrusions.
 
  • Sheet
  • Rod / Round Bar / Flat Bar
交货:
机械性能
厚度 (mm) 证明力量 (Min.) 屈服强度 (Min.) Uzama %
over 0.203 up to & incl. 0.279 430 MPa 505 MPa 5
over 0.305 up to & incl. 0.991 458 MPa 520 MPa 7
over 1.02 up to & incl. 3.17 465 MPa 535 MPa 8
over 3.20 up to & incl. 6.32 472 MPa 533 MPa 8
over 6.35 up to & incl. 12.7 459MPa 534 MPa 9
over 12.7 up to & incl. 25.4 465 MPa 538 MPa 7
over 25.43 up to & incl. 50.8 457 MPa 526 MPa 6
over 50.83 up to & incl. 63.5 437 MPa 519 MPa 5
over 63.53 up to & incl. 76.2 417 MPa 491 MPa 5
over 76.23 up to & incl. 88.9 394 MPa 485 MPa 5
over 88.93 up to & incl. 102 368 MPa 458 MPa 4