List of copper alloys

general knowledge of bearing/bushing materials, here are the copper alloys from your list suitable for bronze bearings and bushing sleeves:

1. Standard Bronze (CuSn) / Tin Bronze (CuSn)

   • Why: This is the quintessential bearing bronze. The description under “5. Copper-Tin Alloys” explicitly states “used in high-wear applications such as bearings and bushings.” These alloys offer good wear resistance, load-carrying capacity, and machinability.

2. Phosphor Bronze (CuSnP)

   • Why: While your description highlights electrical components and springs, Phosphor Bronzes are widely used for bearings and bushings due to their excellent wear resistance, fatigue strength, and good bearing properties (low coefficient of friction). The phosphorus acts as a deoxidizer and hardener.

3. Aluminum Bronze (CuAl)

   • Why: These alloys offer high strength, excellent corrosion resistance (especially in marine environments), and good wear resistance, making them suitable for heavy-duty bearings and bushings, particularly where loads are high or corrosive conditions exist.

4. Silicon Bronze (CuSi)

   • Why: Offers high strength and good corrosion resistance. While not as common as tin or aluminum bronzes for general-purpose bearings, they can be used in specific applications, especially where good castability and corrosion resistance are required.

Note on Leaded Varieties:
While your list has “Leaded Brass (CuZnPb),” it’s important to know that Leaded Tin Bronzes (CuSnPb) are also extremely common and highly effective for bearings and bushings. The lead improves machinability and provides self-lubricating properties, reducing friction and wear. If “Standard Bronze (CuSn)” or “Tin Bronze (CuSn)” can be considered to sometimes include leaded versions (which they often do in practice, e.g., C93200 SAE 660 Bearing Bronze is a leaded tin bronze), then they are prime candidates. Your list doesn’t explicitly separate leaded bronzes within the “Bronze Alloys” category.

Therefore, from your list, the most direct and common choices for bronze bearings and bushings are:

• Standard Bronze (CuSn) / Tin Bronze (CuSn)

• Phosphor Bronze (CuSnP)

• Aluminum Bronze (CuAl)