Leaded Commercial Bronze
This alloy family is a free machining brass with a higher electrical and thermal conductivity than that of standard free-machining brass. C31400 and C31600 both have natural corrosion resistance combined with the machinability typical of leaded brasses as well as good cold workability.
Phospor Bronze
Phosphor bronze is an alloy of copper containing 0.5–11% tin and 0.01-0.35% phosphorus. The tin increases the corrosion resistance and strength of the alloy. The phosphorus increases the wear resistance and stiffness of the alloy. These alloys are notable for their toughness, strength, low coefficient of friction, and fine grain.
Aluminum Bronze
Aluminum bronzes are used for their combination of high strength, excellent corrosion and wear resistance. Aluminum bronze alloys typically contain 9-12% aluminum and up to 6% iron and nickel. Alloys in these composition limits are hardened by a combination of solid solution strengthening, cold work, and precipitation of an iron-rich phase.
Low-Silicon Bronze
C65100 is an engineering alloy at least as resistant to corrosion as copper itself, but much stronger, and with good fatigue endurance. It is recognized for its brazeability, strength, corrosion resistance, and electrical properties. C65100 is also one of the most weldable copper alloys.
Manganese Bronze
Manganese bronzes are the strongest and one of the most wear resistant alloys with high tensile strength, high yield strength, hardness and ductility similar to steel. In addition to their excellent mechanical properties, manganese bronzes are also corrosion resistant. Manganese bronze alloys are also typically known for their high impact resistance and excellent machinability.
Copper Nickel-Tin Bronze
Copper nickel-tin bronzes are an excellent alternative to nickel alloys, aluminum bronzes, and beryllium copper. C729, a copper nickel-tin (CuNiSn) bronze is available, standard stocked, in AMS 4596, AMS 4597, and AMS 4598 specifications. It resists mechanical wear, galling, stress relaxation, corrosion, and erosion. It is non-magnetic and easy to machine into complex components. In addition, it is environmentally friendly, being lead and beryllium free, thus making it a beryllium copper substitute alloy.
Leaded Tin Bronze
The lead content in high leaded tin bronze alloys is between 7 percent and 15 percent. These alloys are free cutting and retain favorable thermal conductivity and good lubricity due to the lead content. Alloy C93200 , also termed bearing bronze, SAE 660, SAE 660 bronze, and SAE 660 bearing bronze, is considered this family’s workhorse alloy and is widely used in many bearing applications.
Leaded Red Brass
This group of alloys is typically found in plumbing applications. The most widely used alloy in this family is C84400. Leaded red brass is known for reasonable cost with good machining and casting properties. The lead content ensures pressure tightness. Red brass is also used for low-cost bearing materials under low loads.
Manganese Bronze
Manganese bronzes can operate under very high loads and speeds. However, bearing applications require reliable lubrication. Besides excellent mechanical qualities, these alloys have good corrosion resistance. The standard alloy in this group is high tensile C86300, which is comprised of copper, manganese, aluminum and iron. This combination raises the tensile strength to over 110,000 KSI.
Aluminum Bronze
Aluminum bronze is the highest strength standard copper based alloy. Randall Bearings produces C95400, C95500, AMS 4880-C95510 and C95900 in standard sizes of rounds, tubes and rectangles. Aluminum in conjunction with iron and nickel in C95500 acts as a strengthener in these alloys. All of the aluminum bronzes can be heat treated, further increasing tensile strengths.
C95400 | C95500 | AMD 4880-C95510 | C95900
Tin Bronze
Tin bronze alloys are typically found in gear, high-strength bushing and bearing applications where high strength and low speeds and heavy loads are present. Other high-strength applications for these alloys are pump impellers, piston rings, steam fittings, valve bodies. High tin bronze castings are utilized in movable bridge components, turntables for bridges and other structures for fixed and expansion bearings with slow or intermittent movement with heavy loads.
High-Leaded Tin Bronze
Tin bronze alloys are typically found in gear, high-strength bushing and bearing applications where high strength and low speeds and heavy loads are present. Other high-strength applications for these alloys are pump impellers, piston rings, steam fittings, valve bodies. High tin bronze castings are utilized in movable bridge components, turntables for bridges and other structures for fixed and expansion bearings with slow or intermittent movement with heavy loads.
| Copper Alloys UNS No. | Cu% | Pb% | Sn% | Zn% | Fe% | P% | Ni% | Al% | Co% | Cr% | Mn% | S% | Sb% | Si% |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| C31400 | 87.50-90.50 | 1.30-2.50 | Rem. | 0.10 | 0.70 | |||||||||
| C31600 | 87.50-90.50 | 1.30-2.50 | Rem. | 0.10 | 0.04-1.20 | 0.70-1.20 | ||||||||
| C51000 | Rem. | 0.05 | 4.20-5.80 | 0.30 | 0.10 | 0.03-0.35 | ||||||||
| C52100 | Rem. | 0.05 | 7.00-9.00 | 0.20 | 0.10 | 0.03-0.35 | ||||||||
| C53400 | Rem. | 0.08-1.20 | 3.50-5.80 | 0.30 | 0.10 | 0.03-0.35 | ||||||||
| C54400 | Rem. | 3.00-4.00 | 3.50-4.50 | 1.50-4.50 | 0.10 | 0.01-0.50 | ||||||||
| C62400 | Rem. | 0.20 | 2.00-4.50 | 10.00-11.50 | 0.30 | 0.25 | ||||||||
| C63000 | Rem. | 0.20 | 0.30 | 2.00-4.00 | 4.00-5.50 | 9.00-11.00 | 1.50 | 0.25 | ||||||
| C63020 | Rem. | 0.03 | 0.25 | 0.30 | 4.00-5.50 | 4.20-6.00 | 10.00-11.00 | 0.20 | 0.05 | 1.50 | 0.15 | |||
| C64200 | Rem. | 0.05 | 0.20 | 0.50 | 0.30 | 0.25 | 6.30-7.60 | 0.10 | 1.50-2.20 | |||||
| C65100 | Rem. | 0.05 | 1.50 | 0.80 | 0.70 | 0.80-2.00 | ||||||||
| C67300 | 58.00-63.00 | 0.40-3.00 | 0.30 | Rem. | 0.50 | 0.25 | .025 | 2.00-3.50 | 0.50-1.50 | |||||
| C67400 | 57.00-60.00 | 0.50 | 0.30 | Rem. | 0.35 | 0.25 | 0.50-2.00 | 2.00-3.50 | 0.50-1.50 | |||||
| C67410 | 55.00-59.00 | 0.80 | 0.50 | Rem. | 1.00 | 2.00 | 1.30-2.30 | 1.00-2.40 | 0.70-1.30 | |||||
| C67600 | 57.00-60.00 | 0.50-1.00 | 0.50-1.50 | Rem. | 0.40-1.30 | 0.05-0.50 | ||||||||
| C72900 (AMS 4596) | Rem. | 0.02 | 7.50-8.50 | 0.50 | 0.50 | 14.50-15.50 | 0.30 | |||||||
| C72900 (AMS 4597) | Rem. | 0.02 | 7.50-8.50 | 0.50 | 0.50 | 14.50-15.50 | 0.30 | |||||||
| C72900 (AMS 4598) | Rem. | 0.02 | 7.50-8.50 | 0.50 | 0.50 | 14.50-15.50 | 0.30 | |||||||
| C84400 | 78.00-82.00 | 6.00-8.00 | 2.30-3.50 | 7.00-10.00 | 0.40 | 0.02 | 1.00 | 0.005 | 0.08 | 0.25 | 0.005 | |||
| C86300 | 60.00-66.00 | 0.20 | 0.20 | 22.00-28.00 | 2.00-4.00 | 1.00 | 5.00-7.50 | 2.50-5.00 | ||||||
| C90300 | 86.00-89.00 | 0.30 | 7.50-9.00 | 3.00-5.00 | 0.20 | 0.05 | 1.00 | 0.005 | 0.05 | 0.20 | 0.005 | |||
| C90700 | 88.00-90.00 | 0.50 | 10.00-12.00 | 0.50 | 0.15 | 0.30 | 0.50 | 0.005 | 0.05 | 0.20 | 0.005 | |||
| C93200 | 81.00-85.00 | 6.00-8.00 | 6.30-7.50 | 1.00-4.00 | 0.20 | 0.15 | 1.00 | 0.005 | 0.08 | 0.35 | 0.005 | |||
| C93700 | 78.00-82.00 | 8.00-11.00 | 9.00-11.00 | 0.80 | 0.70 | 0.10 | 0.50 | 0.005 | 0.08 | 0.50 | 0.005 | |||
| C94100 | 72.00-79.00 | 18.00-22.00 | 4.50-6.50 | 1.00 | 0.25 | 0.50 | 1.00 | 0.005 | 0.08 | 0.80 | 0.005 | |||
| C95400 | 83.00 min | 3.00-5.00 | 1.50 | 10.00-11.50 | 0.50 | |||||||||
| C95500 | 78.00 min | 3.00-5.00 | 3.00-5.50 | 10.00-11.50 | 3.50 | |||||||||
| c95510 (AMS 4880) | 78.00 min | 0.20 | 0.30 | 2.00-3.50 | 4.50-5.50 | 9.70-10.90 | 1.50 | |||||||
| C95900 | Rem. | 3.00-5.00 | 0.50 | 12.00-13.50 | 1.50 |