C90300 (SAE 620) NAVY G Tin Bronze  is a strong, wear-resistant, lead-free tin bronze used in shipbuilding for marine hardware, bearings, bushings, valve components, and propeller parts due to its excellent corrosion resistance to dezincification. Its properties, including durability under high loads, make it ideal for critical underwater and fluid-handling systems where reliability in harsh, corrosive marine environments is essential. This proven alloy is used in wide variety of naval applications and has an excellent rating for soldering and offers good brazing. Conforms to continuous cast specification ASTM B505

Chemistry: Cu88 Sn8 Zn4

Min. Mechanical Properties: 45 ksi tensile, 21 ksi yield (0.5% Ext. under load), 30% elongation in 2 inches, 70 Brinell Hardness (500 kg load)

Applications: Bearings, bushings, piston rings, valve components, seal rings, steam fittings and gears

 

C90500 (SAE 62) Tin Bronze also known as Gun Metal is a high wear resistant bronze that provides good mechanical properties and excellent corrosion resistance to dezincification. C90500's combination of high tin content and lead provides a hard surface with good lubricity, allowing it to handle pounding and heavy loads effectively where other bronzes might fail, making it a workhorse for demanding engineering tasks. This proven alloy is used in wide applications and has an excellent rating for soldering and offers good brazing. Conforms to continuous cast specification ASTM B505

Chemistry: Cu88 Sn10 Zn2

Min. Mechanical Properties: 45 ksi tensile, 22 ksi yield (0.5% Ext. under load), 25% elongation in 2 inches, 75 Brinell Hardness (500 kg load)

Applications: Marine pumps, valves, bearings, bushings, piston rings, steam fittings, and gears.

 

C90700 (SAE 65) Bronze is primarily a gear bronze. Its specific composition creates hard phases that excel in sliding contact, reducing wear and extending component life. It is strengthened by the solid solution of tin in the copper. This results in a strong, hard intercrystalline phase rich in tin. The tin atoms distort the copper matrix enough to help inhibit slip of crystal layers and the intercrystalline phase contributes to hardness. The tin bronzes do develop a low friction deposit of bronze on the mating steel parts. For this reason, tin bronze is the alloy of choice for nonferrous gears. Conforms to continuous cast specification ASTM B505

Chemistry: Cu89 Sn11

Min. Mechanical Properties: 38 ksi tensile, 25 ksi yield (0.5% Ext. under load), 18% elongation in 2 inches, 65 Brinell Hardness (500 kg load)

Applications: Heavy duty gears, high load bearings, bushings and worm wheels.

 

C92200 (SAE 622) Navy M Tin Bronze is a high-grade steam-metal and valve-bronze alloy used for component castings of valves, flanges, and fittings. This alloy can be used for a variety of steam pressure applications involving temperatures up to 550F. C92200 (Navy M) bronze is a leaded tin bronze used in marine applications, including submarines, for components needing good wear/corrosion resistance and machinability, such as valve/pump parts, fittings, and bearings, due to its copper-tin-lead composition, making it suitable for moderate steam/hydraulic pressure. Its "M" designation signifies its use in naval/marine applications, offering strength and reliable performance in challenging underwater environments, Conforms to continuous cast specification ASTM B505, QQ-C-390B Type 3

Chemistry: Cu88 Sn6 Zn4 Pb2

Min. Mechanical Properties: 38 ksi tensile, 25 ksi yield (0.5% Ext. under load), 18% elongation in 2 inches, 65 Brinell Hardness (500 kg load)

Applications: Valves, fittings, Medium-pressure hydraulic and steam pressure parts for use up to 550 F (287 C)

 

C93200 (SAE 660) Bronze is a standard, general-purpose bearing bronze used for its excellent machinability, anti-friction properties, strength, and wear resistance, making it ideal for bearings, bushings, and washers in various industrial applications with medium loads and speeds, especially where good lubrication is available. Its lead content provides self-lubricating qualities, while its structure resists corrosion from seawater and brine, making it a durable choice for demanding parts like pump components and machine tool parts. C93200 has excellent load capacity that make it a preferred alloy for a wide variety of applications in transmission equipment, electric motors,  automotive equipment, tractors, cranes, hoists, elevators and many types of accessory and special equipment. C93200 bearing bronze has good machining characteristics, resists many chemicals and is generally recommended for medium speed, medium load applications. Conforms to continuous cast specification ASTM B 505.

Chemistry: Cu83 Sn7 Zn3 Pb7

Min. Mechanical Properties: 35 ksi tensile, 20 ksi yield (0.5% Ext. under load), 10% elongation in 2 inches, 65 Brinell Hardness (500 kg load)

Applications: General utility bearings, bushings and wear plates for medium speeds and pressures. 

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C93600 (Modified SAE 64) Bronze with a higher lead content than C93200 offers extra score resistance, enabling it to withstand abrasive contact and resist damage from sliding or scraping. C93600 high-leaded tin bronze is specifically engineered for bearing applications where the supply of a lubricant may be unreliable or lost. The presence of lead provides inherent self-lubricating properties that protect mating surfaces even when traditional lubrication is absent. C93600 has excellent machining characteristics, resists many chemicals and is generally recommended for medium speed, medium load applications. Conforms to continuous cast specification ASTM B 505.

Chemistry: Cu81 Sn7 Zn1 Pb12

Min. Mechanical Properties: 35 ksi tensile, 21 ksi yield (0.5% Ext. under load), 15% elongation in 2 inches, 65 Brinell Hardness (500 kg load)

Applications: Bushings for corrosion, lubrication or pressure, Cam Bushings for Diesel Engines, Crankshaft Main Bearings, Guide Bushings for Piston Rods, Guide Bushings for Valves, Hydraulic Gland Seals, Locomotive Bearing Parts, Main Bearings for Presses, Piston Pin Bearings, Pump Sleeves, Rod Bushings, Rolling Mill Bearings, Sleeve Bushings (for Cranes, etc.), Bearings for corrosion, lubrication or pressure

 

C95400 Aluminum Bronze is the most popular, all-purpose aluminum bronze alloy. It provides high yield and tensile strength, good ductility, weldability and exceptional resistance to wear, fatigue and deformation under shock or overload. Aluminum bronze offers high strength, often rivaling medium-carbon steel thanks to its copper-aluminum composition forming a strong oxide layer and strengthening phases like kappa, making it excellent for heavy-duty, corrosive environments. C95400 aluminum bronze is recommended for high load, high wear applications and in bushings where shock and side loading are common. Conforms to continuous cast specification ASTM B 505

Chemistry: Cu87 AI10 Fe3

Min. Mechanical Properties: 85 ksi tensile, 32 ksi yield (0.5% Ext. under load), 10% elongation in 2 inches, 170 Brinell Hardness (3000 kg load)

Applications: High strength bearings, bushings, gears, worms, wear plates, valve seats, and guides.

 

C95500 Nickel Aluminum Bronze gains its strength from a combination of copper, aluminum, nickel, and iron, which create complex microstructures with hard precipitates (like kappa phases) and solid-solution strengthening, while also forming protective oxide layers, enhanced by processing methods like heat treatment that refine grains and introduce beneficial internal structures like annealing twins, making it strong, tough, and corrosion-resistant.  C95500 is recommended for heavy-duty applications involving abrasion, wear, and fatigue. The alloy exhibits exceptional yield, compressive strength, high hardness, and fairly high elongation. The addition of nickel offers superior saltwater corrosion resistance making it ideal for demanding marine, heavy industrial, and aerospace applications like bearings, gears, valve components, and pump parts. C95500 conforms to continuous cast specification ASTM B505

Chemistry: Cu81 AI10 Ni5 Fe4

Min. Mechanical Properties: 95 ksi tensile, 42 ksi yield (0.5% Ext. under load), 10% elongation in 2 inches, 190 Brinell Hardness (3000 kg load)

Applications: High strength bearings, corrosion resistant parts, aircraft valve guides, and seats.

 

C95510 HT (AMS 4880) Nickel Aluminum Bronze heat-treated nickel aluminum bronze (NAB) gains strength through a quenching and tempering process that transforms its microstructure, primarily by forming fine, hard precipitates (like kappa (κ) phases) within a softer copper-rich (α) matrix, creating a hard, strong material that is then tempered for improved ductility without significant strength loss, unlike steel. This process refines the grain structure and precipitates, impeding dislocation movement and boosting tensile strength, hardness, and wear resistance. The formation of annealing twins during the heat treatment process (recrystallization and grain growth) can be manipulated to tailor the microstructure, allowing for the design of materials with desired properties. For example, controlling the thickness of twin lamellae can optimize the strength and ductility. C95510 HT (AMS 4880) is one of the more popular landing gear bushing materials specified today along with C63000 wrought nickel aluminum bronze (AMS 4640)  material. C95510HT (AMS 4880) is available in tube form, which requires less machine time and results in cost savings.

Chemistry: Cu78 min Al10 Ni5 Fe3 Mn 1.5

Min. Mechanical Properties: 105 ksi tensile, 62.5 yield, 9% elongation in 4D, 192 Brinell Hardness (3000 kg load)

Applications: Landing Gear Bushings & Bearings, Valve Guides, Stems, Seats, Corrosion Resistant Parts, Wear Rings, Machine Tool Parts, Piston Guides, Worm Wheels, Propeller Hubs, Wear Rings, Hardware, Worm Gears, Shafts, Sleeves

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C86300 (SAE 430B/ALLOY 424) Manganese Bronze is a high strength, non-heat treatable alloy intended for use in applications requiring a good combination of outstanding wear characteristics and high bearing strength. C86300 manganese bronze gets its strength from being a copper-zinc alloy (a type of brass) with added elements like manganese, iron, and aluminum, which create a hard, wear-resistant structure with high tensile strength, making it suitable for demanding, high-load applications like marine parts, gears, and bushings. The manganese, along with iron and aluminum, strengthens the base copper-zinc matrix, improving resistance to fatigue, corrosion, and wear, far beyond what plain bronze or brass offers. C86300 SAE 430B manganese bronze is recommended for low speed, extreme load applications. Conforms to continuous cast specification ASTM B 505

Chemistry: Cu63  Al6 Fe3 Mn3 Zn25

Min. Mechanical Properties: 110 ksi tensile, 62 ksi yield (0.5% Ext. under load), 14% elongation in 2 inches, 225 Brinell Hardness (3000 kg load)

Applications: Heavy duty high strength alloy for gears, cams, slow speed heavy load bearings, screw down nuts.

 

Other Cast Copper Alloys are available in a wide variety of sizes from 0.406" (10.30mm) diameter up to 16.00" (406mm) diameter or cross-section and are available in tubes, solid diameters, rectangles, squares, hexagons and special profiles. Bar lengths are available in 144" standard mill lengths or cut to your requested length. Centrifugal Cast (ASTM B271) rings and tubes are available up to 124" (3150mm) outside diameter.