World-class aluminum and zinc die cast products



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Quality Assurance

Wilkast’s quality emphasis is the cornerstone of our business.

We are currently registered with our ISO 9001:2015 certification. We have aligned ourselves so that we can provide full PPAP approval through the APQP process for new parts as well as dimensional results depending upon the needs of our customer. Our quality system allows us flexibility to customize and control each part to the specific needs of our customers and maintain consistency throughout the life of the product. Our onsite coordinate measurement machine located in our quality lab is used for dimensional confirmation for both new part approval as well as an ongoing process verification tool. Our emphasis on quality is the cornerstone of our business philosophy!


  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.