Aluminum

Prototypes from CNC milling, investment casting, Quick Sand Casting, DMLS sintering

Prototypes uses only alloys suitable for machining “fromcasting” (designed for gravity casting and employable with our quick sand casting processes) or machining from chips (designed for CNC milling).

Alligator effect:

  • Silicon – Yes: improves the fluidity of the cast alloy. Higher silicon content allows thinner-walled castings, however, it increases the risk of abnormal shrinkage in massive areas.
  • Copper-Cu: improves compactness and heat dissipation.

Features
aluminum rapid prototyping

In prototyping, the combination of material and processing technique is one of the most complex choices for printing on aluminum. Running a prototype almost always requires evaluations so, for the use and consumption of engineers, average material properties obtained by prototype construction are provided. These can be used to get an idea of technical and functional compliance.

To improve machinability in aluminum rapid prototyping, it is recommended that parts undergo T6 heat treatment cycles (which also raise the overall mechanical properties).

All aluminum alloys reporting GAlSi at the beginning are:

Alloys specifically formulated for casting (G) suitable precisely for foundry processes, then specifically weighted to withstand the process of melting, part forming and subsequent solidification.

The letters AlSi indicate that it is an alloy with main constituent Aluminum and first alligant Silicon.

Foundry alloys are also recognizable by the numerical abbreviation EN AB 4xxx (4000 series).

Applications
Developed applications
  • Grids
  • Caps
  • Knobs
  • Burners
  • Wok Supports
  • Tubs
  • Distributors
  • Shut-off valves
  • Control valves
  • Pump body
  • Carrier lantern
  • Mouthpieces
  • Valves
  • Shredders
  • Open Impellers
  • Closed Impellers
  • Single-channel impellers
  • Diffusers
  • Circulators
  • Supports
  • Engine shields
  • Inverter boxes
  • Carcasses
  • Finned masses
  • Streetlights
  • Racing parts
  • Aluminum frames
  • Engine cylinders
  • Motor heads
  • Brake calipers
  • Clutch Crankcase
  • Engine crankcase
  • Gearboxes
  • Frame elements
  • Forks
GAlSi7 EN AB 42000
Elem. % Min % Max
Si 6,5 7,5
Fe 0,45
Cu 0,15
Mn 0,35
Mg 0,25 0,65
Cr -
Ni 0 0,15
Zn 0 0,15
Pb 0 0,15
Sn 0 0,05
Ti 0,05 0,20
Individual impurities 0,05
Global impurities 0,15
GAlSi9 EN AB 43100
Elem. % Min % Max
Si 9,00 11,0
Fe 0,45
Cu 0,08
Mn 0,45
Mg 0,25 0,45
Cr -
Ni 0,05
Zn 0,10
Pb 0,05
Sn 0,05
Ti 0,15
Individual impurities 0,05
Global impurities 0,15
GAlSi9Cu1 EN AB 46400
Elem. % Min % Max
Si 8,3 9,7
Fe 0 0,7
Cu 0,8 1,3
Mn 0,15 0,55
Mg 0,30 0,65
Cr -
Ni 0,20
Zn 0,8
Pb 0,10
Sn 0,10
Ti 0,10 0,18
Individual impurities 0,05
Global impurities 0,25
GAlSi10 EN AB 43200
Elem. % Min % Max
Si 9,0 11,0
Fe 0,55
Cu 0,3
Mn 0,55
Mg 0,25 0,45
Cr -
Ni 0,15
Zn 0,35
Pb 0,10
Sn -
Ti 0,15
Individual impurities 0,05
Global impurities 0,15
GAlSi7Mg Ti EN AB 42000
Elem. % Min % Max
Si 6,5 7,5
Fe 0,45
Cu 0,15
Mn 0,35
Mg 0,25 0,65
Cr -
Ni 0 0,15
Zn 0 0,15
Pb 0 0,15
Sn 0 0,05
Ti 0,05 0,20
Individual impurities 0,05
Global impurities 0,15
GALSi11 EN AB 44000
Elem. % Min % Max
Si 10,0 11,8
Fe 0,15
Cu 0,03
Mn 0,10
Mg 0,45
Cr -
Ni -
Zn 0,07
Pb -
Sn -
Ti 0,15
Individual impurities 0,03
Global impurities 0,10
ALUMINUM ALLOYS CHARACTERISTICS
Alloy UNI name Tensile strength Rm (N/mm2) Yield load Elongation A %
GAlSi7 Mg Ti EN AB 42000 140(F) / 220(T6) 80(F) / 180(T6) 2 (F) / 1 (T6)
GAlSi9 EN AB 43100 200 120 1
GAlSi9Cu EN AC 46400 135 (F) 90 (F) 1
GalSi11 EN AB 44000 150/210 80/120 0,9
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