DIN 1725-1 Grade 3.4365 T5 – High‑Strength 7075 Aluminum Alloy for Aerospace

DIN 3.4365 is a high-strength alloy that offers good stress-corrosion cracking resistance. Known as a mainstay in the aerospace industry since it was introduced, Aluminum 7075 brings moderate toughness as well as an excellent strength-to-weight ratio. It is also important to note that at sub-zero temperatures Aluminum 7075 increases in strength.

Additional services: Cuttings, Parts from drawings

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Quantity: 1 PCS

Properties

General

Property	Temperature	Value	Condition	Related Standards	Shape
Density	20.0 °C	2.8 g/cm³	T5	DIN 1725-1, EN 573-3, EN 573-4, WL 3.4364-1	Forging

Mechanical

Property	Temperature	Value	Condition	Related Standards	Shape	Comment
Elastic modulus	20.0 °C	70.0 - 73.0 GPa	T5	DIN 1725-1, EN 573-3, EN 573-4, WL 3.4364-1	Forging
Elongation	20.0 °C	3.0 %	T5	DIN 1725-1, EN 573-3, EN 573-4, WL 3.4364-1	Forging
	20.0 °C	4.0 %	T5	DIN 1725-1, EN 573-3, EN 573-4, WL 3.4364-1	Forging
	20.0 °C	6.0 %	T5	DIN 1725-1, EN 573-3, EN 573-4, WL 3.4364-1	Forging
Hardness, Brinell	20.0 °C	115.0 [-]	T5	DIN 1725-1, EN 573-3, EN 573-4, WL 3.4364-1	Forging
	20.0 °C	120.0 [-]	T5	DIN 1725-1, EN 573-3, EN 573-4, WL 3.4364-1	Forging
Plane-Strain Fracture Toughnes		22.0 - 35.0 MPa·√m				Typical for Wrought 7000 Series Aluminium
Poisson's ratio		0.33 [-]				Typical for Wrought 7000 Series Aluminium
Shear modulus	20.0 °C	25.0 - 27.0 GPa	T5	DIN 1725-1, EN 573-3, EN 573-4, WL 3.4364-1	Forging
Tensile strength	20.0 °C	410.0 MPa	T5	DIN 1725-1, EN 573-3, EN 573-4, WL 3.4364-1	Forging
	20.0 °C	420.0 MPa	T5	DIN 1725-1, EN 573-3, EN 573-4, WL 3.4364-1	Forging
	20.0 °C	440.0 MPa	T5	DIN 1725-1, EN 573-3, EN 573-4, WL 3.4364-1	Forging
	20.0 °C	450.0 MPa	T5	DIN 1725-1, EN 573-3, EN 573-4, WL 3.4364-1	Forging

Thermal

Property	Temperature	Value	Condition	Related Standards	Shape	Comment
Coefficient of thermal expansion	-50.0 °C	2.16e-05 1/K	T5	DIN 1725-1, EN 573-3, EN 573-4, WL 3.4364-1	Forging
	100.0 °C	2.34e-05 1/K	T5	DIN 1725-1, EN 573-3, EN 573-4, WL 3.4364-1	Forging
	200.0 °C	2.43e-05 1/K	T5	DIN 1725-1, EN 573-3, EN 573-4, WL 3.4364-1	Forging
	300.0 °C	2.52e-05 1/K	T5	DIN 1725-1, EN 573-3, EN 573-4, WL 3.4364-1	Forging
Melting point		465.0 - 655.0 °C				Typical for Wrought 7000 Series Aluminium
Specific heat capacity	20.0 °C	862.0 J/(kg·K)	T5	DIN 1725-1, EN 573-3, EN 573-4, WL 3.4364-1	Forging
Thermal conductivity	20.0 °C	130.0 - 160.0 W/(m·K)	T5	DIN 1725-1, EN 573-3, EN 573-4, WL 3.4364-1	Forging

Electrical

Property	Temperature	Value	Condition	Related Standards	Shape	Comment
Electrical conductivity	20.0 °C	19000000.0 - 23000000.0 S/m	T5	DIN 1725-1, EN 573-3, EN 573-4, WL 3.4364-1	Forging
Electrical resistivity		2.9e-08 - 5.6e-08 Ω·m				Typical for Wrought 7000 Series Aluminium

Chemical properties

Property	Value	Condition	Related Standards	Shape
Chromium	0.18 - 0.28 %	T5	DIN 1725-1, EN 573-3, EN 573-4, WL 3.4364-1	Forging
Copper	1.2 - 2.0 %	T5	DIN 1725-1, EN 573-3, EN 573-4, WL 3.4364-1	Forging
Iron	0.5	T5	DIN 1725-1, EN 573-3, EN 573-4, WL 3.4364-1	Forging
Magnesium	2.1 - 2.9 %	T5	DIN 1725-1, EN 573-3, EN 573-4, WL 3.4364-1	Forging
Manganese	0.3	T5	DIN 1725-1, EN 573-3, EN 573-4, WL 3.4364-1	Forging
Silicon	0.4	T5	DIN 1725-1, EN 573-3, EN 573-4, WL 3.4364-1	Forging
Titanium	0.2	T5	DIN 1725-1, EN 573-3, EN 573-4, WL 3.4364-1	Forging
Zinc	5.1 - 6.1 %	T5	DIN 1725-1, EN 573-3, EN 573-4, WL 3.4364-1	Forging

Technological properties

Property
Brazing	Excellent

Property

Brazing

Excellent

EN 573-3 Grade 3.4365 O3 Aluminum 7075 – High-Strength Aerospace Alloy EN 573-3 Grade AW-2011 H13 Aluminum Alloy – Superior Machining & Mechanical Performance

Metal