Producer of custom machined parts, specializing in bronze and other popular alloys for your manufacturing needs.
ALLOYS
Meeting Customer Alloy Needs
COPPER-BASED ALLOYS
LEAD-FREE | LOW-LEAD BRONZE
OTHER MATERIALS
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.

C31400 | C31600
Phosphor 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.

C51000 | C52100 | C53400 | C54400
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.

C62400 | AMS 4640-C63000 | AMS 4634-C64200 | C64210
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.

C65100
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.

C67300 | C67400 | C67410 | C67600
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.

AMS 4596-C72900 | AMS 4597-C72900 | AMS 4598-C72900
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.

C93200
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.

C84400
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.

C86300
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.

C90300 | C90700
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.

C93700 | C94100
Copper Alloys UNS No.
Cu%
Pb%
Sn%
Zn%
Fe%
P%
Ni%
Al%
Co%
Cr%
Mn%
S%
Sb%
Si%
As%
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-​0.10
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
0.09
C64210
Rem.
0.05
0.20
0.50
0.30
0.25
6.30-​7.60
0.10
1.50-​2.20
0.09
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
0.25
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
COPPER-BASED ALLOYS
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.

C31400 | C31600
Phosphor 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.

C51000 | C52100 | C53400 | C54400
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.

C62400 | AMS 4640-C63000 | AMS 4634-C64200 | C64210
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.

C65100
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.

C67300 | C67400 | C67410 | C67600
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.

AMS 4596-C72900 | AMS 4597-C72900 | AMS 4597-C72900
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.

C93200
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.

C84400
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.

C86300
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.

C90300 | C90700
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.

C93700 | C94100
Copper Alloys UNS No.
Cu%
Pb%
Sn%
Zn%
Fe%
P%
Ni%
Al%
Co%
Cr%
Mn%
S%
Sb%
Si%
As%
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-​0.10
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
0.09
C64210
Rem.
0.05
0.20
0.50
0.30
0.25
6.30-​7.60
0.10
1.50-​2.20
0.09
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
0.25
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
LEAD-FREE | LOW-LEAD
OTHER MATERIALS
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