DIN 1725-1 Grade 3.0615 T8: High-Performance Free-Cutting Alloy

The material AlMgSiPb is a free-cutting alloy (boring and turning quality). It is warm and cold hardenable. Breaking the splinter is caused by the additive of Pb, and thus a troublefree splinter removal is possible with relatively high cutting performance. From the standardised free-cutting steel alloys this has to exhibit the smallest strength grade (F20 and/or F28), is however as only without surface protection corrosion resistant. It is suitable for a decorative surface treatment such as an anodising or a dyeing. The weldability is good. Heat treatment for hardening: solution annealing: 520 to 530 °C, quenching in water to 65 °C cold ageing: 5 to 8 at ambient temperature warm ageing: 4 to 16 h at 155 to 190 °C

Properties

General

Property	Temperature	Value	Condition	Related Standards	Shape
Density	20.0 °C	2.75 g/cm³	T8	DIN 1725-1, EN 573-3, EN 573-4	Rod, Tube

Mechanical

Property	Temperature	Value	Condition	Related Standards	Shape	Comment
Elastic modulus		70.0 GPa				Typical for Wrought 6000 Series Aluminium
Elongation	20.0 °C	6.0 %	T8	DIN 1725-1, EN 573-3, EN 573-4	Rod, Tube	A10
	20.0 °C	8.0 %	T8	DIN 1725-1, EN 573-3, EN 573-4	Rod, Tube
Hardness, Brinell	20.0 °C	80.0 [-]	T8	DIN 1725-1, EN 573-3, EN 573-4	Rod, Tube
Plane-Strain Fracture Toughnes		22.0 - 35.0 MPa·√m				Typical for Wrought 6000 Series Aluminium
Poisson's ratio		0.33 [-]				Typical for Wrought 6000 Series Aluminium
Shear modulus		26.0 - 26.5 GPa				Typical for Wrought 6000 Series Aluminium
Tensile strength	20.0 °C	275.0 MPa	T8	DIN 1725-1, EN 573-3, EN 573-4	Rod, Tube

Thermal

Property	Temperature	Value	Condition	Related Standards	Shape	Comment
Coefficient of thermal expansion	100.0 °C	2.3e-05 1/K	T8	DIN 1725-1, EN 573-3, EN 573-4	Rod, Tube
Melting point		555.0 - 655.0 °C				Typical for Wrought 6000 Series Aluminium
Specific heat capacity		887.0 - 963.0 J/(kg·K)				Typical for Wrought 6000 Series Aluminium
Thermal conductivity	20.0 °C	163.0 - 186.0 W/(m·K)	T8	DIN 1725-1, EN 573-3, EN 573-4	Rod, Tube

Electrical

Property	Temperature	Value	Condition	Related Standards	Shape	Comment
Electrical conductivity	20.0 °C	24000000.0 - 28000000.0 S/m	T8	DIN 1725-1, EN 573-3, EN 573-4	Rod, Tube
Electrical resistivity		2.9e-08 - 5e-08 Ω·m				Typical for Wrought 6000 Series Aluminium

Chemical properties

Property	Value	Condition	Related Standards	Shape
Bismuth	0.7	T8	DIN 1725-1, EN 573-3, EN 573-4	Rod, Tube
Chromium	0.3	T8	DIN 1725-1, EN 573-3, EN 573-4	Rod, Tube
Copper	0.1	T8	DIN 1725-1, EN 573-3, EN 573-4	Rod, Tube
Iron	0.5	T8	DIN 1725-1, EN 573-3, EN 573-4	Rod, Tube
Lead	0.4 - 2.0 %	T8	DIN 1725-1, EN 573-3, EN 573-4	Rod, Tube
Magnesium	0.6 - 1.2 %	T8	DIN 1725-1, EN 573-3, EN 573-4	Rod, Tube
Manganese	0.4 - 1.0 %	T8	DIN 1725-1, EN 573-3, EN 573-4	Rod, Tube
Silicon	0.6 - 1.4 %	T8	DIN 1725-1, EN 573-3, EN 573-4	Rod, Tube
Titanium	0.2	T8	DIN 1725-1, EN 573-3, EN 573-4	Rod, Tube
Zinc	0.3	T8	DIN 1725-1, EN 573-3, EN 573-4	Rod, Tube

Technological properties

Property
Workability	Excellent workability.

Property

Workability

Excellent workability.

DIN 1725-1 Grade 3.0526 T6 Aluminum Alloy – High Strength & Corrosion Resistance DIN 1725-1 Grade 3.1255 T8 Aluminum Alloy – High Strength & Precision Machining

Metal