Silafont

Silafont® – an infinite wealth of properties
A family of materials which can be adapted to the parts to be produced and the customer's individual production process with ultimate precision. Can be processed using any casting procedure, outstanding flow properties, can be modified with sodium or strontium to further enhance properties. For complex, delicate components which have to satisfy precisely defined requirements and, if they feature the right components, make maximum production efficiency possible.

Silafont emulates flowing water, that flows continually to the sea, advances at any angle, washing around every stone and every shape in its way. Homogeneous and light in the very same way that Silafont fills the cavities in the mould.


Silafont®-09 [ AlSi9 ]

Areas of use
Large apparatus parts, fittings, cars, lighting, domestic appliances, air conditioning, automotive engineering, foodstuffs industry, mechanical engineering, shipbuilding, defence engineering.

Distinguishing characteristics
Flangeable high pressure die casting alloy with very good casting properties, even with thick-walled designs. Very good corrosion resistance to weathering and water.

Alloy denomination
Chemical denomination: AlSi9 | Numerical denomination: 44 400



Composition [ % of mass ]

SiFeCuMnMgZnTi
9,5 – 10,60,40,020,40,050,100,10
Mechanical properties

Casting
method
Treatment
state
Yield tensile strength
Rp0,2 [N/mm2]
Ultimate tensile strength
Rm [N/mm2]
Elongation
A [%]
Brinell hardness
HBW
High press. die castingF120 – 180240 – 2804 – 855 – 80

Silafont®-13 [ AlSi11 ]

Areas of use
Architecture, domestic appliances, air conditioning, foodstuffs industry, mechanical engineering.

Distinguishing characteristics
Near eutectic AlSi universal alloy with average mechanical properties, high elongation and impact toughness. Outstanding castability, very good corrosion resistance, outstanding weldability. Good sheen after mechanical polishing.

Alloy denomination
Chemical denomination: AlSi11



Composition [ % of mass ]

SiFeCuMnMgZnTiother
10,0 – 13,50,150,020,050,050,070,15(Na/Sr)
Mechanical properties

Casting
method
Treatment
state
Yield tensile strength
Rp0,2 [N/mm2]
Ultimate tensile strength
Rm [N/mm2]
Elongation
A [%]
Brinell hardness
HBW
Sand castingF70 – 120 (70)150 – 210 (150)7 – 13 (6)45 – 60 (45)
Sand castingO60 – 120 (70)150 – 210 (150)9 – 15 (8)45 – 60 (45)
Gravity die castingF80 – 150 (80)170 – 240 (160)7 – 16 (6)45 – 60 (45)
Gravity die castingO60 – 120 (60)180 – 240 (160)10 – 18 (10)45 – 65 (45)

Silafont®-20 [ AlSi11Mg ]

Areas of use
Architecture, cars, heavy casting, automotive engineering, foodstuffs industry, mechanical engineering.

Distinguishing characteristics
Near eutectic, heat-treatable AlSi alloy with high mechanical properties. Outstanding corrosion resistance to weathering and water. Outstanding weldability. Good machinability after ageing. Silafont-20 dv offers particularly good ductility properties.

Alloy denomination
Chemical denomination: AlSi11Mg | Numerical denomination: 44 000



Composition [ % of mass ]

SiFeCuMnMgZnTiother
10,0 – 11,80,150,020,050,10 – 0,450,070,15(Na/Sr)
Mechanische Eigenschaften

Casting
method
Treatment
state
Yield tensile strength
Rp0,2 [N/mm2]
Ultimate tensile strength
Rm [N/mm2]
Elongation
A [%]
Brinell hardness
HBW
Sand castingF80 – 140 (70)170 – 220 (170)2 – 4 (1,5)50 – 60 (50)
Sand castingT6120 – 300 (110)200 – 320 (200)1 – 3 (0,5)65 – 120 (55)
Gravity die castingF80 – 130 (80)180 – 230 (180)3 – 16 (3)55 – 75 (55)
Gravity die castingT6125 – 320 (120)210 – 350 (210)4 – 15 (3)70 – 125 (70)

Silafont®-30 [ AlSi9Mg ]

Areas of use
Fittings, cars, lighting, heavy casting, domestic appliances, air conditioning, automotive engineering, manufacture of engines, art casting, foodstuffs industry, mechanical engineering, shipbuilding, textile industry, defence engineering. Well suited to large and complicated castings.

Distinguishing characteristics
One of the most important AlSi casting alloys which can be aged, with very good casting properties and outstanding corrosion resistance. High strength values after artificial ageing. Excellent weldability, very good machinability.

Alloy denomination
Chemical denomination: AlSi9Mg | Numerical denomination: 43 300



Composition [ % of mass ]

SiFeCuMnMgZnTiother
9,0 – 10,00,150,020,050,30 – 0,450,070,15(Na/Sr)
Mechanische Eigenschaften

Casting
method
Treatment
state
Yield tensile strength
Rp0,2 [N/mm2]
Ultimate tensile strength
Rm [N/mm2]
Elongation
A [%]
Brinell hardness
HBW
Sand castingF80 – 140 (80)160 – 220 (150)2 – 6 (2)50 – 70 (50)
Sand castingT6200 – 310 (180)250 – 330 (220)2 – 5 (2)80 – 115 (75)
Gravity die castingF90 – 150 (90)180 – 240 (180)2 – 9 (2)60 – 80 (60)
Gravity die castingT64180 – 210 (140)250 – 290 (220)6 – 10 (3)80 – 90 (80)
Gravity die castingT6210 – 310 (190)290 – 360 (240)4 – 7 (2)90 – 120 (90)

Silafont®-36 [ AlSi10MnMg ]

Areas of use
Architecture, fittings, cars, lighting, aircraft, domestic appliances, air conditioning, automotive engineering, foodstuffs industry, mechanical engineering, shipbuilding, defence engineering, welded designs.

Distinguishing characteristics
High pressure die casting alloy with excellent castability, very good elongation in as-cast state, maximum elongation after heat treatment. Very good corrosion resistance, good polishability, very good machinability, very good weldability.

Alloy denomination
Chemical denomination: AlSi9MgMn | Numerical denomination: 43 500



Composition [ % of mass ]

SiFeCuMnMgZnTiother
9,5 – 11,50,150,030,5 – 0,80,1 – 0,50,070,15Sr
Mechanical properties

Casting
method
Treatment
state
Yield tensile strength
Rp0,2 [N/mm2]
Ultimate tensile strength
Rm [N/mm2]
Elongation
A [%]
Brinell hardness
HBW
High press. die castingF120 – 150250 – 2905 – 1175 – 95
High press. die castingT5155 – 245275 – 3404 – 980 – 110
High press. die castingT495 – 140210 – 26015 – 2260 – 75
High press. die castingT6210 – 280290 – 3407 – 1290 – 110
High press. die castingT7120 – 170200 – 24015 – 2060 – 75

Silafont®-38 [ AlSi9MnMgZn ]

Areas of use
Weight reduced car body structures for vehicles, mechanical engineering

Distinguishing characteristics
Casting alloy with very high mechanical properties after T6 treatment including a air queching for reduced distorsion. Very high yield strenght combined with high values of elongation for crash relevant structural die castings. Silafont-38 substitutes sheet designs in vehicle design and offers high cost and weight reduction.

Alloy denomination
Chemical denomination: AlSi9MgMnZn



Chemical composition [% of mass]

SiFeCuMnMgZnTiandere
8,5 – 10,00,150,1 - 0.40,4 - 0,80,3 – 0,40,1 - 0,30,15Sr; Mo
Mechanical properties

Casting methodTreatment
state
Quenching coolingYTS
Rp0,2 [N/mm2]
UTS
Rm [N/mm2]
Elongation
A [%]
HPDCF140 - 160270 - 3003 – 7
HPDCT6Water230 - 270300 - 3456 - 9
HPDCT6Air180 - 200250 - 2758 - 10

Silafont®-70 [ AlSi12CuNiMg ]

Areas of use
Cars, automotive engineering. Parts which are subject to high strength loads at high temperatures.

Distinguishing characteristics
Very high ultimate tensile strength, yield tensile strength and hardness values are achieved through full artificial ageing. Good mechanical properties at higher temperatures. Good machining characteristics. Reduced corrosion resistance. Good running and sliding properties, wear resistant.

Alloy denomination
Chemical denomination: AlSi12CuNiMg | Numerical denomination: 48 000



Composition [% of mass ]

SiFeCuMnMgZnTiother
11,0 – 13,50,150,8 – 1,30,050,9 – 1,30,100,100,8 – 1,3 Ni
Mechanical properties

Casting
method
Treatment
state
Yield tensile strength
Rp0,2 [N/mm2]
Ultimate tensile strength
Rm [N/mm2]
Elongation
A [%]
Brinell hardness
HBW
Sand castingF120 – 170 (110)130 – 180 (120)0,5 – 1,5 (0,5)80 – 90 (80)
Sand castingT6200 – 300 (190)220 – 300 (200)0,3 – 1,0 (0,3)130 – 160 (130)
Sand castingT5140 – 190 (140)160 – 190 (160)0,2 – 1,0 (0,2)80 – 90 (80)
Gravity die castingF190 – 260 (180)200 – 270 (190)1,0 – 2,5 (0,5)90 – 105 (90)
Gravity die castingT6320 – 390 (280)350 – 400 (300)0,5 – 2,0 (0,5)135 – 160 (135)
Gravity die castingT5185 – 210 (150)200 – 230 (180)0,5 – 2,0 (0,5)90 – 110 (90)