319

stack of 319 aluminum

319.0 (6Si-3.5Cu) Aluminum Alloy

  • Former designations: 319, Allcast
  • Former ASTM: SC64D
  • SAE: 326
  • UNS number: A03190
  • Foreign: ISO AlSi6Cu4, AC 2A, 3052, A-S5U, A-S5U3, EN AC-45400, EN AC-45200, LM 22, G-AlSi6Cu4, ISO AlSi5Cu3
  • Description: 319 is commonly not heat treated. We typically use 319.1 aluminum alloy. Typical applications for sand casting 319 are a wide variety of structural castings for engine parts, engine crankcases, gas and oil pans, and general commercial applications.

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stack of 319 aluminum
Designations & nominal compositions of common aluminum alloys used for sand casting
AA Number Former AA designations Former ASTM number Cu Mg Mn Si Others
319.0 319, Allcast SC64D 3.50 6.00
Characteristics of common aluminum alloys used in sand casting
Alloy Fluidity Resistance to hot cracking Pressure tightness Heat Treatment Strength at elevated temperatures General corrosion resistance Machining Polishing Anodizing Apperance Weldability
319.0 2 2 2 Optional 3 3 3 4 4 2

Characterisitics are comparatively rated from 1 to 5; 1 is the highest or best possible rating.

Alloy Uses
319.0 Engine crankcase covers, electrical boxes, gear boxes
Typical Tensile Properties for separately cast test bars of common aluminum casting alloys
Alloy Temper Tensile strength Yield strength Shear strength Compressive yield strength Elongation %
Mpa ksi Mpa ksi Mpa ksi Mpa ksi
319.0 F 185 27 125 18 150 22 130 19 2
319.0 T6 250 36 165 24 200 29 170 25 2

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