World-class aluminum and zinc die cast products



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Finishing

Preparation of a our die castings for subsequent painting or plating requires cleaning and/or mechanical finishing.

Wilkast is capable of handling the entire processing cycle for our customers.  

We can provide the following services:

  • Vibratory & Thermal Deburr, Anodizing (hard/soft), Di-chromate, E-coating,  Parts Washing, Polishing, Buffing & Sanding, Shot Blasting, Etc.
  • Chrome plating and painting to class A specifications is our “signature” finish.   We pride ourselves on our ability to deliver the highest quality surface finishes that are truly World Class and separates us from the rest!

  Aluminum Die Casting Alloys Zinc Die Casting Alloys
  A360 A380 383 B390 A413 518 #2 #3 #5 #7 ZA-8 ZA-12 ZA-27
Ultimate Tensile Strength (ksi) 46 47 45 46 42 45 53 41 48 41 54 59 62
Tensile Yield Strength (ksi) 24 23 22 36 19 28 41 32 39 32 41-43 45-48 52-55
Compressive Yield Strength ( ksi) - - - - - - 93 60 87 60 37 39 52
Elongation (% in 2") 3.5 3.5 3.5 <1 3.5 5.0 7 10 7 13 6-10 4-7 2.0-3.5
Hardness(BHN) 500kg load 10mm ball 75 80 75 120 80 80 100 82 91 80 100-103 95-105 116-122
Shear Strength, (ksi) 26 27 - - 25 29 46 31 38 31 40 43 47
Impact Strength ft-lb ASTM .25" die cast bar - 3 3 - - 7 35 43 48 43 24-35 15-27 7-12
Fatigue Strength (ksi)(Rotary Bent 108) 18 20 21 20 19 20 8.5 6.9 8.2 6.9 15 - 21
Young's Modulus  ( psi x 106) 10.3 10.3 10.3 11.8 - - 12.4 12 11.3
  Aluminum die casting alloys Zinc die casting alloys
  A360 A380 383 B390 A413 518 #2 #3 #5 #7 ZA-8 ZA-12 ZA-27
Density (lbs./in3) 0.095 .098 .099 .098 .096 .093 .24 .24 .24 .24 .227 .218 .181
Melting Range (°F) 1035-1105 1000-1100 960-1080 950-1200 1065-1080 995-1150 715-734 718-728 717-727 718-728 707-759 710-810 708-903
Specific Heat BTU/ lb °F 0.230 0.230 0.230 - 0.230 - .10 .10 .10 .10 .104 .107 .125
Coefficient of Thermal Expansion (µ in./in. °F X 10-6) 11.6 12.1 11.7 10.0 11.9 13.4 15.4 15.2 15.2 15.2 12.9 13.4 14.4
Thermal Conductivity   (BTU / ft hr °F) 65.3 55.6 55.6 77.4 70.21 55.6 60.5 65.3 62.9 65.3 66.3 67.1 72.5
Electrical Conductivity (% IACS) 29 23 23 27 31 24 25.0 27.0 26.0 27.0 27.7 28.3 29.7
Poisson's Ratio .33 .33 .33 - - - .30 .30 .30 .30 .30 .30 .30

 

  Aluminum alloy chemical specifications (% by weight) Zinc alloy chemical specifications (% by weight)
  A360 A380 383 B390 A413 518   #2 #3 #5 #7 ZA-8 ZA-12 ZA-27
Silicon (Si) 9.0-10.0 7.5-9.5 9.5-11.5 16.0-18.0 11.0-13.0 .35 Aluminum (Al) 3.9-4.3 3.9-4.3 3.9-4.3 3.9-4.3 8.2-8.8 10.8-11.5 25.5-28.0
Iron (Fe) 1.3 2.0 1.3 1.3 1.3 1.8 Magnesium (Mg) .025-.05 .03-.06 .03-.06 .01-.02 .02-.03 .02-.03 .012-.02
Copper (Cu) .6 3.0-4.0 2.0-3.0 4.0-5.0 1.0 .25 Copper (Cu) 2.7-3.3 .10 .7-1.1 .10 .9-1.3 .5-1.2 2.0-2.5
Manganese (Mn) .35 .50 .50 .50 .35 .35 Iron (Fe) .035 .035 .035 .075 .035 .05 .07
Magnesium (Mg) .4-.6 .30 .10 .45-.65 .1 7.5-8.5 Lead (Pb) .004 .004 .004 .002 .002 .005 .005
Nickel (Ni) .5 .5 .3 .10 .5 .15 Cadmium (Cd) .003 .003 .003 .002 .005 .005 .005
Zinc (Zn) .5 3.0 3.0 1.5 .5 .15 Tin (Sn) .0015 .0015 .0015 .0010 .002 .002 .002
Tin (Sn) .15 .35 .15 - .15 .15 Nickel (Ni) - - - .005-.020 - - -
Titanium (Ti) - - - .10 - - Zinc (Zn) Bal. Bal. Bal. Bal. Bal. Bal. Bal.
Others (each) - - - .10 - -                
Others (Total) .25 .50 .50 .20 .25 .25                
Aluminum (Al) Bal. Bal. Bal. Bal. Bal. Bal.