EN 1706 Grade AC-42100 T6

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Description

Material EN AC-AlSi7Mg0,3 is produced as sand, chilled and precision casting. It shows the following casting characteristics and properties: plasticity: good heat crack resistance: excellent pressure tightness: good workability (casting condition): good corrosion resistance: good decorative anodic oxidation: insufficient weldability: good polishability: acceptable strength at room temperature: excellent strength at increased temp. (up to 200°C): acceptable ductility (impact strength): excellent fatigue strength amounts 80 to 110 N/mm² ( best available casting method, values for vibration durability up to 50*10 hoch 6 cycles [Woehler diagram]). To the comparable DIN-mark G-AlSi7Mg, mat. No. 3.2371, acc. to DIN 1725-2 : 1986-02 applies: The material is a multipurpose alloy of favorable mechanical properties, high strength and ductility as well as high corrosion resistance. Weldability is excellent. Application: Casting parts for vehicle, machine and aircraft industry, shipbuilding and electrical engineering.

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Properties

General

Density

ρ

2.65 g/cm³ at 20 °C

Mechanical

Elastic modulus

E

73 GPa at 20 °C

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Elongation A50

A50

2 - 4 % at 20 °C

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Hardness, Brinell

HB

75 - 90 [-] at 20 °C

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Poisson's ratio

ν

0.33 [-] at 20 °C

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Typical for Cast 3xx.x Series Aluminium

Shear modulus

G

2.8 GPa at 20 °C

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Typical for Cast 3xx.x Series Aluminium

Tensile strength

Rm

230 - 290 MPa at 20 °C

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Yield strength Rp0.2

Rp0.2

190 - 210 MPa at 20 °C

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Thermal

Coefficient of thermal expansion

α

2.2E-5 1/K at 20 °C

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Melting point

Tm

550 - 610 °C

Specific heat capacity

cp

920 J/(kg·K) at 20 °C

Thermal conductivity

λ

160 - 180 W/(m·K) at 20 °C

Electrical

Electrical conductivity

σel

2.10E+7 - 2.70E+7 S/m at 20 °C

Electrical resistivity

ρel

3.7E-8 - 4.76E-8 Ω·m at 20 °C

Chemical properties

Element

Weight %

Comment

Other

-

each 0.03, total 0.10, Rest Al

Al

91.3 %

Si

6.5 - 7.5 %

Mg

0.25 - 0.45 %

Fe

0.19 %

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Technological properties

Anodizing

decorative: not sufficient

Corrosion properties

general: good

General machinability

as cast: good

Processing methods

investment casting, separately cast test sample

This material data has been provided by WIAM,AluKey.

All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.