EN 573-3 Grade 3.0255 H44 – Premium Aluminum Alloy for High-Performance Applications

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Properties

General

Property	Value	Condition	Related Standards
Density	2.7 g/cm³	H44	EN 573-3, EN 1396

Mechanical

Property	Value	Condition	Related Standards	Comment
Bending Fatigue Strength	35.0 MPa	H44	EN 573-3, EN 1396
Elastic modulus	69.0 GPa	H44	EN 573-3, EN 1396
Plane-Strain Fracture Toughnes	22.0 - 35.0 MPa·√m			Typical for Wrought 1000 Series Aluminium
Poisson's ratio	0.33 [-]			Typical for Wrought 1000 Series Aluminium
Shear modulus	25.9 GPa	H44	EN 573-3, EN 1396
Tensile strength	100.0 - 145.0 MPa	H44	EN 573-3, EN 1396

Thermal

Property	Temperature	Value	Condition	Related Standards
Coefficient of thermal expansion	-50 °C	2.17e-05 1/K	H44	EN 573-3, EN 1396
	20 °C	2.17e-05 1/K	H44	EN 573-3, EN 1396
	20 °C	2.35e-05 1/K	H44	EN 573-3, EN 1396
	20 °C	2.4399999999999997e-05 1/K	H44	EN 573-3, EN 1396
	20 °C	2.5399999999999997e-05 1/K	H44	EN 573-3, EN 1396
	100 °C	2.35e-05 1/K	H44	EN 573-3, EN 1396
	200 °C	2.4399999999999997e-05 1/K	H44	EN 573-3, EN 1396
	300 °C	2.5399999999999997e-05 1/K	H44	EN 573-3, EN 1396
Melting point		646.0 - 657.0 °C	H44	EN 573-3, EN 1396
Specific heat capacity		900.0 J/(kg·K)	H44	EN 573-3, EN 1396
Thermal conductivity		210.0 - 220.0 W/(m·K)	H44	EN 573-3, EN 1396

Electrical

Property	Value	Condition	Related Standards
Electrical conductivity	34000000.0 - 36000000.0 S/m	H44	EN 573-3, EN 1396
Electrical resistivity	2.78e-08 - 2.94e-08 Ω·m	H44	EN 573-3, EN 1396

Chemical properties

Property	Value	Condition	Related Standards
Aluminium	99.5 %	H44	EN 573-3, EN 1396
Copper	0.05 %	H44	EN 573-3, EN 1396
Iron	0.40 %	H44	EN 573-3, EN 1396
Magnesium	0.05 %	H44	EN 573-3, EN 1396
Manganese	0.05 %	H44	EN 573-3, EN 1396
Silicon	0.25 %	H44	EN 573-3, EN 1396
Titanium	0.05 %	H44	EN 573-3, EN 1396
Zinc	0.07 %	H44	EN 573-3, EN 1396

Technological properties

Property
Anodizing	decorative: gut (EQ: sehr gut), Protective: very good
Brazing	hard brazing (with flux/ without flux): very good / very good, friction soldering: very good, soft brazing with flux: very good
Corrosion properties	Seawater: acceptable, weathering: good
Workability	Bending / Spinning (cold): very good / very good, Impact extrusion (cold): very good, Deep drawing / upsetting (Condition) very good (H14) / very good (H12)

EN 573-3 Grade 3.0255 H19 – High‑Strength Industrial Alloy for Premium Applications EN 573-3 Grade 3.0255 H48 – High-Performance Structural Steel

Metal