EN 1706 AC-71000 T1 Aluminum Alloy – Properties & Applications

Material EN AC-AlZn5Mg is produced as sand and die cast. It shows the following casting characteristics and properties: plasticity: acceptable heat crack resistance: insufficient pressure tightness: insufficient workability (after heat-treatment): excellent worability (casting condition): excellent corrosion resistance: good decorative anodic oxidation: good weldability: acceptable polishability: good strength at room temperature: acceptable strength at increased temp. (up to 200°C): insufficient ductility (impact strength): good fatigue strength amounts 60 to 90 N/mm² ( best available casting method, values for vibration durability up to 50*10 hoch 6 cycles [Woehler diagram]).

Properties

General

Property	Value	Comment
Density	2.8 g/cm³	Typical for Cast 7xx.x Series Aluminium

Mechanical

Property	Temperature	Value	Condition	Related Standards	Shape	Comment
Bending Fatigue Strength		60.0 - 90.0 MPa	T1	EN 1706	Casting
Elastic modulus		74.0 GPa				Typical for Cast 7xx.x Series Aluminium
Hardness, Brinell		60.0 [-]	T1	EN 1706	Casting
		65.0 [-]	T1	EN 1706	Casting
	20.0 °C	60.0 [-]	T1	EN 1706
	20.0 °C	65.0 [-]	T1	EN 1706
Poisson's ratio		0.33 [-]				Typical for Cast 7xx.x Series Aluminium
Tensile strength		190.0 MPa	T1	EN 1706	Casting
		210.0 MPa	T1	EN 1706	Casting
	20.0 °C	190.0 MPa	T1	EN 1706
	20.0 °C	210.0 MPa	T1	EN 1706

Thermal

Property	Temperature	Value	Condition	Related Standards	Shape	Comment
Coefficient of thermal expansion	20 °C	2.4e-05 1/K	T1	EN 1706	Casting
	100.0 °C	2.4e-05 1/K	T1	EN 1706	Casting
	100 °C	2.4e-05 1/K	T1	EN 1706	Casting
Melting point		550.0 - 645.0 °C				Typical for Cast 7xx.x Series Aluminium
Specific heat capacity		963.0 J/(kg·K)				Typical for Cast 7xx.x Series Aluminium
Thermal conductivity	20.0 °C	130.0 - 140.0 W/(m·K)	T1	EN 1706	Casting

Electrical

Property	Temperature	Value	Condition	Related Standards	Shape
Electrical conductivity	20.0 °C	19000000.0 - 21000000.0 S/m	T1	EN 1706	Casting
Electrical resistivity		4.76e-08 - 5.26e-08 Ω·m	T1	EN 1706	Casting

Chemical properties

Property	Value	Condition	Related Standards	Shape
Aluminium	90.3 %	T1	EN 1706
Chromium	0.15 - 0.6 %	T1	EN 1706	Casting
Copper	0.15 - 0.35 %	T1	EN 1706	Casting
Iron	0.8 %	T1	EN 1706
	0.80 %	T1	EN 1706	Casting
Lead	0.05 %	T1	EN 1706	Casting
Magnesium	0.4 - 0.7 %	T1	EN 1706	Casting
Manganese	0.4 %	T1	EN 1706	Casting
Nickel	0.05 %	T1	EN 1706	Casting
Silicon	0.3 %	T1	EN 1706	Casting
Tin	0.05 %	T1	EN 1706	Casting
Titanium	0.1 - 0.25 %	T1	EN 1706	Casting
Zinc	4.5 - 6.0 %	T1	EN 1706	Casting

Technological properties

Property
Anodizing	decorative: good
Corrosion properties	general: good
General machinability	after thermal treatment: excellent, as cast: excellent
Processing methods	permanent mould casting, separately cast test sample

EN 1706 Grade AC-51300 F – High-Strength Aluminium Casting Alloy EN 1706 Grade AC-21200 T4 Aluminium Alloy – Properties & Applications

Metal