Aluminum Alloys Used for CD Weld Studs

Capacitor discharge (CD) stud welding has a broad range of applications from the installation of insulation with CD pins to the construction of electrical cabinets with larger diameter CD studs. CD stud welding and other types of stud welding are valued for the powerful connections they form; the quickness of each operation; and the clean, mark-free backside of welding surfaces. With power from a standard electrical outlet, an experienced welding technician can perform up to 20 CD welds per minute. When done correctly, those welds are more aesthetically pleasing than any other fastening system, and they are often stronger and longer lasting. For any diameter, material, or other specifications you need for CD weld studs, you can find what you’re looking for at Northland Fastening Systems (NFS). We provide a complete supply of CD studs, including pins and flanged or non-flanged studs with various lengths and thread sizes. Our CD studs are available in aluminum, mild steel, stainless steel, and brass with plating and annealing options.

 CD Weld Studs

When it comes to aluminum CD weld studs, we offer several alloy specifications that provide a flexible range of properties as well as custom stud options. Our main aluminum alloy studs include: 

     1100 Series: Alloys in this series are commercially pure, containing a minimum of 99% aluminum. This makes these alloys also some of the most mechanically durable. 1100 alloys are highly conductive thermally and electrically, resistant to corrosion, and workable to form many parts. Other than aluminum, these alloys can contain 0.05-0.20% copper, 0.95% iron, 0.05% manganese, 0.95% silicon, and 0.1% zinc with additional residual materials up to 0.15%.  

     5000 Series: This series of aluminum is typically alloyed with small percentages of manganese, copper, magnesium, chromium, zinc, iron, silicon, and zirconium. Aluminum content can range from around 94% to around 99%. Many of these alloys are considered universal for a broad range of applications, but several are specific to welding.  

     6061 Material: In the 6000s series of aluminum alloys, 6061 is a precipitation-hardened material with magnesium and silicon as main alloying elements. The material has good weldability and contains about 96-98.5% aluminum with 0.80-1.2% magnesium and 0.40-0.80% silicon. The 6061 alloys have high tensile strength and mechanical properties.  

For all of our studs, including CD studs, special sizes are available by request. We have studs regularly available ¼–2½ long, and stud diameters [BL1] [JP2] [JP3] 2”-56 and ⅜-16. Flange diameters are available between 0.125 and 0.437. If you are looking for aluminum CD studs or any studs in the additional materials we offer, you can request a quote online to get started with us today.

 For any other information about our CD weld studs or other supplies, repairs, and services, contact NFS today at (651) 730-7770.