EN 1706 Grade AC-44100 F

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Description

Material EN AC-Al Si12(b) is produced as sand, chilled and precision casting. It shows the following casting characteristics and properties: plasticity: excellent heat crack resistance: excellent pressure tightness: excellent workability (after heat-treatment): acceptable corrosion resistance: good to acceptable 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): good 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]).

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Properties

General

Density

ρ

2.65 g/cm³ at 20 °C

Mechanical

Elastic modulus

E

71 - 75 GPa at 20 °C

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Typical for Cast 4xx.x Series Aluminium

Elongation A50

A50

4 - 5 % at 20 °C

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Hardness, Brinell

HB

50 - 55 [-] 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

2E-5 1/K at 20 °C

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Specific heat capacity

cp

963 J/(kg·K) at 20 °C

Typical for Cast 4xx.x Series Aluminium

Thermal conductivity

λ

130 - 160 W/(m·K) at 20 °C

Electrical

Electrical conductivity

σel

1.60E+7 - 2.30E+7 S/m at 20 °C

Electrical resistivity

ρel

4.35E-8 - 6.25E-8 Ω·m at 20 °C

Chemical properties

Element

Weight %

Comment

Other

-

each 0.05, total 0.15, Rest Al

Al

84.35 %

Si

10.5 - 13.5 %

Fe

0.65 %

Mn

0.55 %

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Technological properties

Anodizing

decorative: not recommended

Corrosion properties

general: good to acceptable

General machinability

after thermal treatment: acceptable

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.