EN 1706 Grade AC-43300 T6

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Description

Material EN AC-AlSi9Mg is produced as sand and chilled cast. It shows the following casting characteristics and properties: plasticity: excellent heat crack resistance: excellent pressure tightness: good workability (after heat-treatment): good to acceptable workability (casting condition): good corrosion resistance: good decorative anodic oxidation: not advisable weldability: excellent polishability: insufficient 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-AlSi9Mg, mat. No. 3.2373, acc. to DIN 1725-2 : 1986-02 applies: The material is an excellent castable alloy. It is suitable for coiled, thin-walled casting parts of high strength and favorable ductility (hot hardened). Corrosion resistance and weldability are excellent. Application: Complex and highest loaded machine parts, such as cylinder heads, crankcases, brake pads, vibrating engine and ventilator parts etc.

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Properties

General

Density

ρ

2.65 g/cm³ at 20 °C

Mechanical

Elastic modulus

E

74 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

2.1E-5 1/K at 20 °C

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Melting point

Tm

550 - 600 °C

Specific heat capacity

cp

910 J/(kg·K) at 20 °C

Thermal conductivity

λ

150 - 180 W/(m·K) at 20 °C

Electrical

Electrical conductivity

σel

2.00E+7 - 2.60E+7 S/m at 20 °C

Electrical resistivity

ρel

3.85E-8 - 5E-8 Ω·m at 20 °C

Chemical properties

Element

Weight %

Comment

Other

-

each 0.03, total 0.10, Rest Al

Al

87.84 %

Si

9 - 11 %

Mg

0.25 - 0.45 %

Fe

0.19 %

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Technological properties

Anodizing

decorative: not recommended

Corrosion properties

general: good

General machinability

after thermal treatment: good to acceptable, as cast: good

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.