Trimet Prag s.r.o.

EN AB-46200 << back

Chemical designation: EN AB-AlSi8Cu3
Previous Swedish standard: Type 4251

Chemical composition:

	Min %	Max %
Si	7,5	9,5
Fe	-	0,7
Cu	2,0	3,5
Mn	0,15	0,65
Mg	0,15	0,55
Cr	-	-
Ni	-	0,35
Zn	-	1,2
Pb	-	0,25
Sn	-	0,15
Ti	-	0,20

General description of properties:
Universal alloy with very good castability. Little tendency towards forming surface defects and internal cavaties due to shrinkage
on solidification. Good machinability and weldability.

Suitable applications:
For wide range of applications. Also for complicated and thin-wall castings.

Heat treatment:
Not usually age hardened.

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
600-490	680-750	Good	Good	S: 1-1,1 K: 0,9-1,1	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: 170	S: 90 K: 100	S: 1 K: 1	S: 60 K: 75

Mechanical and physical properties:

Density Kg/Dm³	Strength	Machinability	Weldability	Resistance to corrosion
2,75	Good	Good	Good	Poor

Decorative anodizing	Ability to be polished	Linear thermal expansion 293-373ºK, ºK¯¹	Electrical conductivity MS/m	Thermal conductivity W/mºK
Not recom.	Satisfact.	21 x 10¯6	14 – 18	110 - 130