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EN AB-43000   << back

Chemical designation: EN AB-AlSi10Mg(a)
Previous Swedish standard: Type 4253
 
Chemical composition:  
  Min % Max %
 Si 9,0 11,0
 Fe - 0,40
 Cu - 0,03
 Mn - 0,45
 Mg 0,25 0,45
 Cr - -
 Ni - 0,05
 Zn - 0,10
 Pb - 0,05
 Sn - 0,05
 Ti - 0,15
General description of properties:
Near-eutectic alloy with excellent castability properties and good resistance to hot tearing. Good machinability, excellent weldability and high resistance to chemical attack.

Suitable applications:
For complicated thin-wall, pressure-tight castings subjected to fatigue loading. Very good resistance to corrosion and high strength
after heat treatment.

Heat treatment:

Solution heat treaded at 520-530ºCfor 3-6 hours followed by quenching in water and artificial ageing at150-175ºC for 15-5 hours
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
600-550 680-750 Excellent Excellent S:1-1,2
K:0,8-1
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.
S: 150
K:180
S: 80
K: 90
S: 2
K: 2,5
S: 50
K: 55

Mechanical and physical properties:
Density
Kg/Dm³
Strength Machinability Weldability Resistance to
corrosion
2,65 Good Good Excellent Good
 
Decorative
anodizing
Ability to be
polished
Linear thermal
expansion
293-373ºK, ºK¯¹
Electrical
conductivity
MS/m
Thermal
conductivity
W/mºK
Not recom. Poor 21 x 10¯6 19 – 25 150 - 170
 

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