DIN 1712-3 Grade 3.0385 H18 – Ultra-Pure Aluminum for High-Conductivity Applications

Superpure aluminium Extremely pure aluminum material with particularly high electrical conductivity. This material is very well anodically oxidisable (high gloss surfaces), has however only small mechanical strength. It is badly splinter-giving to work on (smearing), however well weldable and well solderable. Forming capacity and corrosion behaviour in sour environment are very good. Application: compressed gas tanks, chemical and food industry, household article, reflectors, trim, costume jewelry, corroding volume, electrolytic capacitors, connector lugs.

Properties

General

Property	Temperature	Value	Condition	Related Standards	Shape
Density		2.7 g/cm³	H18	EN 573-3, EN 1301
	20.0 °C	2.7 g/cm³	H18	DIN 1712-3, EN 573-3, EN 573-4	Wire

Mechanical

Property	Temperature	Value	Condition	Related Standards	Shape	Comment
Elastic modulus		70.0 GPa	H18	EN 573-3, EN 1301
	20.0 °C	72.0 GPa	H18	DIN 1712-3, EN 573-3, EN 573-4	Wire
Elongation		2.0 %	H18	EN 573-3, EN 1301
	20.0 °C	3.0 %	H18	DIN 1712-3, EN 573-3, EN 573-4	Wire	A100
	20.0 °C	4.0 %	H18	DIN 1712-3, EN 573-3, EN 573-4	Wire	A10
Hardness, Brinell	20.0 °C	25.0 [-]	H18	DIN 1712-3, EN 573-3, EN 573-4	Wire
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	20.0 °C	25.0 - 26.5 GPa	H18	DIN 1712-3, EN 573-3, EN 573-4	Wire
Tensile strength		115.0 MPa	H18	EN 573-3, EN 1301
	20.0 °C	110.0 MPa	H18	DIN 1712-3, EN 573-3, EN 573-4	Wire

Thermal

Property	Temperature	Value	Condition	Related Standards	Shape
Coefficient of thermal expansion	-50 °C	2.18e-05 1/K	H18	EN 573-3, EN 1301, DIN 1712-3, EN 573-4	Wire
	-50.0 °C	2.18e-05 1/K	H18	EN 573-3, EN 1301, DIN 1712-3, EN 573-4	Wire
	20 °C	2.18e-05 1/K	H18	EN 573-3, EN 1301, DIN 1712-3, EN 573-4	Wire
	20 °C	2.35e-05 1/K	H18	EN 573-3, EN 1301
	20 °C	2.45e-05 1/K	H18	EN 573-3, EN 1301, DIN 1712-3, EN 573-4	Wire
	20 °C	2.55e-05 1/K	H18	EN 573-3, EN 1301, DIN 1712-3, EN 573-4	Wire
	100 °C	2.35e-05 1/K	H18	EN 573-3, EN 1301
	100.0 °C	2.36e-05 1/K	H18	DIN 1712-3, EN 573-3, EN 573-4	Wire
	200 °C	2.45e-05 1/K	H18	EN 573-3, EN 1301, DIN 1712-3, EN 573-4	Wire
	200.0 °C	2.45e-05 1/K	H18	EN 573-3, EN 1301, DIN 1712-3, EN 573-4	Wire
	300 °C	2.55e-05 1/K	H18	EN 573-3, EN 1301, DIN 1712-3, EN 573-4	Wire
	300.0 °C	2.55e-05 1/K	H18	EN 573-3, EN 1301, DIN 1712-3, EN 573-4	Wire
Melting point		660.0 °C	H18	EN 573-3, EN 1301
Specific heat capacity		900.0 J/(kg·K)	H18	EN 573-3, EN 1301
	20.0 °C	900.0 J/(kg·K)	H18	DIN 1712-3, EN 573-3, EN 573-4	Wire
Thermal conductivity		232 W/(m·K)	H18	EN 573-3, EN 1301
	20.0 °C	215.0 - 227.0 W/(m·K)	H18	DIN 1712-3, EN 573-3, EN 573-4	Wire

Electrical

Property	Temperature	Value	Condition	Related Standards	Shape
Electrical conductivity		37500000.0 - 37700000.0 S/m	H18	EN 573-3, EN 1301
	20.0 °C	37600000.0 - 37800000.0 S/m	H18	DIN 1712-3, EN 573-3, EN 573-4	Wire
Electrical resistivity		2.65e-08 - 2.67e-08 Ω·m	H18	EN 573-3, EN 1301

Chemical properties

Property	Value	Condition	Related Standards	Shape
Aluminium	99.98 %	H18	EN 573-3, EN 1301
Copper	0.003 %	H18	DIN 1712-3, EN 573-3, EN 573-4, EN 1301	Wire
Iron	0.006 %	H18	DIN 1712-3, EN 573-3, EN 573-4	Wire
	0.006 %	H18	EN 573-3, EN 1301
Silicon	0.01 %	H18	DIN 1712-3, EN 573-3, EN 573-4, EN 1301	Wire
Titanium	0.003 %	H18	DIN 1712-3, EN 573-3, EN 573-4, EN 1301	Wire
Zinc	0.01 %	H18	DIN 1712-3, EN 573-3, EN 573-4, EN 1301	Wire

Technological properties

Property
Brazing	Excellent
Workability	Excellent workability.

Property

Brazing

Excellent

Workability

Excellent workability.

DIN 1712-3 Grade 3.0385 H14 – Ultra-Pure Aluminium for High Conductivity Applications DIN 1725-1 Grade 3.0505 O – High‑Strength Aluminum Alloy for Advanced Applications

Metal