EN 1706 Grade AC-44000 F

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Description

Material EN AC-AlSi11 is produced as sand and chilled cast. It shows the following casting characteristics and properties: plasticity: excellent heat crack resistance: excellent pressure tightness: excellent workability (after heat-treatment): acceptable (for Mg > 0,1 % applies classification good) corrosion resistance: good decorative anodic oxidation: not advisable weldability: excellent polishability: insufficient strength at room temperature: insufficient strength at increased temp. (up to 200°C): acceptable ductility (impact strength): excellent fatigue strength amounts 60 to 90 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-AlSi11, mat. No. 3.2211, acc. to DIN 1725-2 : 1986-02 applies: G-AlSi11 is an eutectic alloy of excellent form matching capability, high heat-crack resistance and excellent casting properties at high chemical resistance. It is suitable for complex, thin-walled, pressure-tight, vibration resistant casting parts at high corrosion resistance. Application: machine parts, cylinder heads and blocks, engine-, crank-, pump cases, blade wheels, assembly blocks and plates.

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Properties

General

Density

ρ

2.65 g/cm³ at 20 °C

Mechanical

Elastic modulus

E

75 GPa at 20 °C

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Elongation A50

A50

6 - 7 % at 20 °C

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Hardness, Brinell

HB

45 [-] at 20 °C

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Poisson's ratio

ν

0.33 [-] at 20 °C

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Typical for Cast 4xx.x Series Aluminium

Tensile strength

Rm

150 - 170 MPa at 20 °C

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Yield strength Rp0.2

Rp0.2

70 - 80 MPa at 20 °C

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Thermal

Coefficient of thermal expansion

α

2.1E-5 1/K at 20 °C

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Melting point

Tm

570 - 590 °C

Specific heat capacity

cp

910 J/(kg·K) at 20 °C

Thermal conductivity

λ

140 - 170 W/(m·K) at 20 °C

Electrical

Electrical conductivity

σel

1.80E+7 - 2.40E+7 S/m at 20 °C

Electrical resistivity

ρel

4.17E-8 - 5.56E-8 Ω·m at 20 °C

Chemical properties

Element

Weight %

Comment

Other

-

each 0.03, total 0.10, Rest Al

Al

87.09 %

Si

10 - 11.8 %

Mg

0.45 %

Fe

0.19 %

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Technological properties

Anodizing

decorative: not recommended

Corrosion properties

general: good

General machinability

after thermal treatment: acceptable

Processing methods

permanent mould 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.