C355 Aluminum Castings

Barron Industries has offered high-quality castings since 1983. We serve clients around the world in a wide range of industries including aerospace, defense, medical and automotive. Our team continues to maintain NADCAP, ISO 90001, and AS9100D certifications.

Aluminum alloys are great for many applications, but each alloy has different mechanical properties and advantages. In this page, we’ll cover the main properties and advantages of one of our most commonly used alloys: C355 aluminum alloy.

C355 Aluminum Properties

The composition of C355 is primarily aluminum (93%), 1% copper, and 5% silicon. The C355 aluminum alloy also contains around 0.50% magnesium, 0.10% manganese, 0.20% iron, and 0.10% zinc.

Its composition makes it particularly useful for applications that are pressure-sensitive or high-stress environments.

Additional properties of aluminum alloy C355 include:

  • 35-50,000 PSI Tensile Strength
  • 28-39,000 PSI Yield Strength
  • 1 to 3% Elongation


Aluminum C355 alloy is known for being lightweight and easy to work with. Additional advantages include:

  • Resistance to Corrosion in High-Temperature Environments
  • Less Stress Corrosion Cracking
  • Resistance to Salt Exposure, Salt Water, Air Pollution, & Acid Rain

Common Applications for C355 Aluminum

Some common industrial applications for C355 Aluminum are cases for racing car engine parts, connecting rods, crankcases, air compressor fittings, and gear housings.

Need C355 Aluminum Alloy Castings? Call Us Today!

Barron Industries is a Classified Small Business and ITAR compliant manufacturer. We provide C355 aluminum alloy castings to clients around the world in a wide range of industries, including automotive, military, aerospace, and medical. Any castings you receive from us come with a quality guarantee. You can also have peace of mind knowing that we inspect all aluminum castings in-house using NADCAP Certified non-destructive testing equipment.

If you have questions about aluminum alloy C355 or would like to request a quote, please contact us today.