GENERAL PROPERTIES

 

PHYSICAL		SIZIN 1	SIZIN 2	SIZIN S
Density	Kg/dm3	6,7	6,6	6,6
Melting range	°C	380÷390	353÷358	360÷365
Specific heat capacity	J/Kg°K	418,6	418,6	418,6
Thermal conductivity at 20°C	W/m°K	104	104	104
Optimum casting range	°C	420÷430	390÷400	380÷420
Thermal linear expansion	cm/cmx10-6/°C	27,7	28,0	-
Linear shrinkage	%	1,085	1,085	1,080
Maximum casting temperature	°C	450	425	450

 

CHEMICAL (test%)		SIZIN 1	SIZIN 2	SIZIN S
Aluminium		3,9÷4,3	3,9÷4,3	4,0÷4,6
Copper		2,7÷3,5	2,7÷3,5	2,8÷3,1
Magnesium		0,09÷0,14	1,80÷2,20	0,50÷0,70
Impurities:	Lead	max 0,003	max 0,003	max 0,003
	Cadmium	max 0,003	max 0,003	max 0,003
	Tin	max 0,001	max 0,001	max 0,001
	Iron	max 0,030	max 0,030	max 0,030
	Zinc	remainder	remainder	remainder

 

MECHANICAL (the values refer to the cast item)		SIZIN 1	SIZIN 2	SIZIN S
		Sand casting
Tensile strength	MPa	200-220	160-180	200-250
Linear elongation	%	1,0-1,5	molto basso	-
Brinell hardness (500 kg)	HB	105-110	145-150	145-150
Tensile strength at compression (0,1%)	MPa	800-850	680	700