7178

UNS A97178 / AlZn7MgCu / 7178 / T651

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)2,40 - 3,10
Copper (Cu)1,60 - 2,40
Titanium (Ti)0,00 - 0,20
Iron (Fe)0,00 - 0,50
Zinc (Zn)6,30 - 7,30
Aluminium (Al)Balance
物理特性
Density2,83 g/cm³
Melting Point477 °C
Thermal Expansion23.5 µm/m°C
Modulus of Elasticity71 GPa
Thermal Conductivity130 W/m.K
Electrical Resistivity31% IACS
机械性能
Proof Strength550 MPa
Yield Strength630 MPa
Shear Strength370 MPa
Elongation A50 mm8%
Hardness150 HB
7178 T6 aluminum exhibits high strength with good stress corrosion cracking resistance and is widely used in aerospace applications.

 

ALLOY DESIGNATIONS
 
7178 T651 has the following standard designations and specifications.

As Sheet/Plate; 7178 T651, ASTM B209, AMS QQ-A-250/14, UNS A 97178, ISO AlZn7MgCu

 

Choosing Factors for 7178 T651

  • Strength: High
  • Machining: Low
  • Weldability: Satisfactory
  • Formability: Good
  • Corrosion Resistance: Good
  • Heat Treating: Yes
 

Some Well-Known Applications for 7178 T651

In the automotive industry and construction sector,

Car body parts and aircraft body parts,

Mostly used in the aerospace sector.

 

SUPPLIED FORMS
 
7178 T651 is produced/supplied in plate/sheet forms.
  • Plate
  • Sheet
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