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EN AB-44300   << back

Chemical designation: EN AB-AlSi12(Fe)
Previous Swedish standard: Type 4263
 
Chemical composition:  
  Min % Max %
 Si 10,5 13,5
 Fe 0,45 0,9
 Cu - 0,08
 Mn - 0,55
 Mg - -
 Cr - -
 Ni - -
 Zn - 0,15
 Pb - -
 Sn - -
 Ti - 0,15
General description of properties:
Eutectic alloy with excellent castability properties, excellent fluidity and high resistance to hot tearing. Good machinability and high resistance to chemical attack.

Suitable applications:
For complicated, thin-wall, pressure-tight, corrosion-resistant castings subjected to fatigue loading. Particularly suitable for
difficult thin-wall castings with good elongation properties.

Heat treatment:

Not age hardenable
Others each max 0,05%
and total max 0,15%
 

Casting characteristics, S-Sand cast, K-Chill cast:
Solidification
range, ºC, about
Casting
temperature
ºC, about
 Fluidity Resistance to hot
tearing
Shrinkage
%, about
Pressure
tightness
580-570 650-700 Excellent Excellent 0,5 - 0,8  Good

Mechanical properties of separately untreated cast test bars:
Tensile strength,
Rm, MPa, min.
Proof stress
Rp0,2, MPa, min.
Elongation
A50, %, min.
Brinell hardness
HBS, min.
240 130 1 60

Mechanical and physical properties:
Density
Kg/Dm³
Strength Machinability Weldability Resistance to
corrosion
2,65 Good Satisfact. Poor Satisfact.
 
Decorative
anodizing
Ability to be
polished
Linear thermal
expansion
293-373ºK, ºK¯¹
Electrical
conductivity
MS/m
Thermal
conductivity
W/mºK
Not recom. Poor 20 x 10¯6 16 – 22 130 - 160
 

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