Alloys

At Kurt Die Casting, we focus on three primary aluminum die casting alloys. Kurt has the capacity and capability to add other alloys per our customers’ requirements.

Cast aluminum alloys are lightweight with high dimensional stability. Aluminum has high thermal and electrical conductivity, corrosion resistance, and very good mechanical properties, as well as strength at high temperatures.

Would you like to learn more about our aluminum die casting capabilities? Request a quote or contact Kurt Die Casting for more information.

Mechanical Properties of Aluminum Die Casting Alloys

AlloyTensile Strength lbs./sq. in. (ksi)Yield Strength (.2% offset) lbs./sq. in. (ksi)Elongation % IN 2 in.Brinell 500 Kg.Load 10mm BallMelting Range *FDensity lb. per cu. in.Average Thermal Coefficient of thermal expansion (68-212F)Electrical ConductivityThermal Conductivity
A380 47,000 (47) 23,000 / (23) 3.5 80 970- 1090 0.102 11.8 27 0.26
A360 46,000 (46) 24,000 / (24) 3.5 80 1035 - 1105 0.095 11.6 37 35
B390 46,000 (46) 36,000 / (36) < 1 120 950- 1200 0.096 9    

Full Aluminum Die Casting Alloy Spectrum

 

Others

 
  Si Fe Cu Mn Mg Cr Ni Zn Sn Ti Each Total AL
A380 7.5 9.5 1.0 3.0 4.0 0.50 0.10 -- 0.50 2.90 0.35 -- -- 0.50 Balance
A360 9.0 10.0 1.0 0.60 0.35 0.45 0.60 -- .050 0.40 0.15 -- -- 0.25 Balance
B390 16.0 18.0 0.40 4.0 5.0 0.10 0.50 0.65 -- -- 0.10 -- 0.20 0.10 0.20 Balance

Aluminum Die Casting Alloy performance characteristics

380 - The most common aluminum die casting alloy with good fluidity & fair anodizing properties. 360 - Excellent pressure tightness and fluidity with a high silicon content. 369 - Very high silicon content. Excellent corrosion resistance, good fluidity and strength at elevated temperatures. 390 - Very high silicon content with elevated temperature strength but difficult machinability. 413 - Very high silicon content, good fluidity but with poor anodizing quality.

 

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