AA Standards Grade 7178 T6

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Description

AA 7178, comprised of copper and magnesium as its primary alloying elements, offers uncompromising strength and accommodates a number of different metalworking processes. These processes include machining, welding, and heat treating.

Related Standards

Equivalent Materials

This material data has been provided by AluKey.

"Typical" values were obtained via a literature search. "Predicted" values were imputed via artificial intelligence technology. While we have placed significant efforts in ensuring data accuracy, "typical" and "predicted" data should be considered indicative and verified by appropriate material testing. Please do contact us if additional information on the the predicted data method is required.
All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.

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Applications

Maritime

Ship Building & Marine Structures

Properties

General

Property	Value	Condition	Related Standards
Density	2.83 g/cm³ Show Material materials with Density of 2.83 g/cm³	T6	AA Standards, ASTM B209, ASTM B221, ASTM B241, ASTM B316

Mechanical

Property	Value	Condition	Related Standards	Comment
Elastic modulus	72.0 GPa Show Material materials with Elastic modulus of 72.0 GPa	T6	AA Standards, ASTM B209, ASTM B221, ASTM B241, ASTM B316
Plane-Strain Fracture Toughnes	22.0 - 35.0 MPa·√m Show Material materials with Plane-Strain Fracture Toughnes of 22.0 - 35.0 MPa·√m			Typical for Wrought 7000 Series Aluminium
Poisson's ratio	0.33 [-] Show Material materials with Poisson's ratio of 0.33 [-]			Typical for Wrought 7000 Series Aluminium
Shear modulus	26.4 - 27.1 GPa Show Material materials with Shear modulus of 26.4 - 27.1 GPa			Typical for Wrought 7000 Series Aluminium
Tensile strength	565.0 MPa Show Material materials with Tensile strength of 565.0 MPa	T6	AA Standards, ASTM B221, ASTM B241
	570.0 MPa Show Material materials with Tensile strength of 570.0 MPa	T6	AA Standards, ASTM B209
	580.0 MPa Show Material materials with Tensile strength of 580.0 MPa	T6	AA Standards, ASTM B209, ASTM B221, ASTM B241, ASTM B316
	595.0 MPa Show Material materials with Tensile strength of 595.0 MPa	T6	AA Standards, ASTM B221
	600.0 MPa Show Material materials with Tensile strength of 600.0 MPa	T6	AA Standards, ASTM B221, ASTM B241
	605.0 MPa Show Material materials with Tensile strength of 605.0 MPa	T6	AA Standards

Thermal

Property	Temperature	Value	Condition	Related Standards	Comment
Coefficient of thermal expansion	20 °C	2.3399999999999996e-05 1/K Show Material materials with Coefficient of thermal expansion of 2.3399999999999996e-05 1/K	T6	AA Standards, ASTM B209, ASTM B221, ASTM B241, ASTM B316
	100 °C	2.3399999999999996e-05 1/K Show Material materials with Coefficient of thermal expansion of 2.3399999999999996e-05 1/K	T6	AA Standards, ASTM B209, ASTM B221, ASTM B241, ASTM B316
Melting point		475.0 - 630.0 °C Show Material materials with Melting point of 475.0 - 630.0 °C	T6	AA Standards, ASTM B209, ASTM B221, ASTM B241, ASTM B316
Specific heat capacity		795.0 - 1050.0 J/(kg·K) Show Material materials with Specific heat capacity of 795.0 - 1050.0 J/(kg·K)			Typical for Wrought 7000 Series Aluminium
Thermal conductivity		126 W/(m·K) Show Material materials with Thermal conductivity of 126 W/(m·K)	T6	AA Standards, ASTM B209, ASTM B221, ASTM B241, ASTM B316

Electrical

Property	Value	Condition	Related Standards
Electrical conductivity	18000000.0 S/m Show Material materials with Electrical conductivity of 18000000.0 S/m	T6	AA Standards, ASTM B209, ASTM B221, ASTM B241, ASTM B316
Electrical resistivity	5.56e-08 Ω·m Show Material materials with Electrical resistivity of 5.56e-08 Ω·m	T6	AA Standards, ASTM B209, ASTM B221, ASTM B241, ASTM B316

Chemical properties

Property	Value	Condition	Related Standards
Chromium	0.18 - 0.28 % Show Material materials with Chromium of 0.18 - 0.28 %	T6	AA Standards, ASTM B209, ASTM B221, ASTM B241, ASTM B316
Copper	1.6 - 2.4 % Show Material materials with Copper of 1.6 - 2.4 %	T6	AA Standards, ASTM B209, ASTM B221, ASTM B241, ASTM B316
Iron	0.50 % Show Material materials with Iron of 0.50 %	T6	AA Standards, ASTM B209, ASTM B221, ASTM B241, ASTM B316
Magnesium	2.4 - 3.1 % Show Material materials with Magnesium of 2.4 - 3.1 %	T6	AA Standards, ASTM B209, ASTM B221, ASTM B241, ASTM B316
Manganese	0.3 % Show Material materials with Manganese of 0.3 %	T6	AA Standards, ASTM B209, ASTM B221, ASTM B241, ASTM B316
Silicon	0.4 % Show Material materials with Silicon of 0.4 %	T6	AA Standards, ASTM B209, ASTM B221, ASTM B241, ASTM B316
Titanium	0.2 % Show Material materials with Titanium of 0.2 %	T6	AA Standards, ASTM B209, ASTM B221, ASTM B241, ASTM B316
Zinc	6.3 - 7.3 % Show Material materials with Zinc of 6.3 - 7.3 %	T6	AA Standards, ASTM B209, ASTM B221, ASTM B241, ASTM B316

Technological properties

Property
Brazing	general: no brazing is known or developed
Corrosion properties	Stress corrosion cracking: Operational damage in areas with tensile stresses transverse to the grain structure, limited damage to laboratory samples, general: good, without protection in industrial or seawater atmosphere
General machinability	General: good to acceptable
Workability	general (condition): not suitable

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