Cast Copper Alloys Properties Compositions Applications Guide

Grade	σb (MPa)	δ5 (%)	Hardness (HB)	Chemical Composition	Characteristics and Applications
ZCuAl10Fe3	540	15	1080	Al: 8.5-11.0; Fe: 2.0-4.0; Cu: balance	Casting Method: Permanent Mold Casting, Investment Casting; 10-3 Aluminum Bronze; High mechanical properties, good wear and corrosion resistance, weldable, difficult to braze, large castings air-cooled from 700°C to prevent embrittlement. Fair weldability. Used for heavy-duty castings requiring high strength, wear and corrosion resistance, such as bushings, nuts, worms, and pipe fittings working below 250°C.
ZCuAl10Fe3Mn2	540	20	1175	Al: 9.0-11.0; Fe: 2.0-4.0; Mn: 1.0-2.0; Cu: balance	Casting Method: Shell Mold Castingand Casting; 10-3-2 Aluminum Bronze; High mechanical properties and wear resistance, heat-treatable, good corrosion resistance and oxidation resistance at high temperatures, good corrosion resistance in atmosphere, fresh water, and seawater, weldable, difficult to braze, large castings air-cooled from 700°C to prevent embrittlement. Used for parts requiring high strength, wear and corrosion resistance, such as gears, bearings, bushings, nozzles, and heat-resistant pipe fittings.
ZCuAl8Mn13Fe3	600	15	1570	Al: 7.0-9.0; Fe: 2.0-4.0; Mn: 12.0-14.5; Cu: balance	Casting Method: Shell Mold Casting; 8-13-3 Aluminum Bronze; Very high strength and hardness, good wear resistance and castability, high density, good corrosion resistance, service temperature for wear parts not exceeding 400°C, weldable, difficult to braze. Suitable for heavy-duty machinery bushings, and parts requiring high strength, wear and pressure resistance, such as bushings, flanges, valve bodies, pump bodies.
ZCuAl8Mn13Fe3Ni2	645	20	1570	Al: 7.0-8.5; Fe: 2.5-4.0; Mn: 11.5-14.0; Ni: 1.8-2.5; Cu: balance	Casting Method: Shell Mold Casting; 8-13-3-2 Aluminum Bronze; Very high mechanical properties, good corrosion resistance in atmosphere, fresh water, and seawater, high corrosion fatigue strength, good castability, dense structure, good airtightness, weldable, difficult to braze. Used for important parts requiring high strength and corrosion resistance, such as ship propellers, high-pressure valve bodies, pump bodies, and pressure-resistant, wear-resistant parts like worms, gears, flanges, bushings.
ZCuAl9Fe4Ni4Mn2	630	16	1570	Al: 8.5-10.0; Fe: 4.0-5.0; Mn: 0.8-2.5; Ni: 4.0-5.0; Cu: balance	Casting Method: Shell Mold Casting; 9-4-4-2 Aluminum Bronze; Very high mechanical properties, excellent corrosion resistance in atmosphere, fresh water, and seawater, high corrosion fatigue strength, good wear resistance, heat resistance below 400°C, heat-treatable, good weldability, difficult to braze. Used for important castings requiring high strength and good corrosion resistance, a primary material for ship propellers, also used for wear-resistant parts working below 400°C, such as bearings, gears, worms, nuts, flanges, valve bodies, guide sleeves.
ZCuAl9Mn2	390	20	835	Al: 8.0-10.0; Mn: 1.5-2.5; Cu: balance	Casting Method: Shell Mold Casting; 9-2 Aluminum Bronze; High mechanical properties, good corrosion resistance in atmosphere, fresh water, and seawater, good castability, dense structure, high airtightness, good wear resistance, weldable, difficult to braze. Used for corrosion-resistant, wear-resistant parts, large simple-shaped castings like bushings, gears, worms, pipe fittings working below 250°C, and castings requiring high airtightness, such as turbocharger internal seals.
ZCuPb10Sn10	220	6	685	Pb: 8.0-11.0; Sn: 9.0-11.0; Cu: balance	Casting Method: Permanent Mold Casting, Investment Casting; 10-10 Lead Bronze; Good lubricating properties, wear resistance, and corrosion resistance, suitable for bimetal casting materials. Used for sliding bearings with high surface pressure and side pressure, such as rolls, vehicle bearings, impact parts with peak load of 60MPa, and bimetal bushings for internal combustion engines with peak load up to 100MPa, as well as piston pin bushes, friction plates.
ZCuPb15Sn8	220	8	635	Pb: 13.0-17.0; Sn: 7.0-9.0; Cu: balance	Casting Method: Permanent Mold Casting, Investment Casting; 15-8 Lead Bronze; Good sliding and self-lubricating properties under conditions of lack of lubricant or with water-based lubrication, easy to cut, poor castability, good corrosion resistance to dilute sulfuric acid. Used for bearings with high surface pressure and side pressure, can be used to make copper cooling pipes for cold rolling mills, parts with impact load up to 50MPa, bimetal bushings for internal combustion engines, mainly used for piston pin bushes with maximum load of 70MPa, acid-resistant fittings. Similar standard C93800
ZCuPb17Sn4Zn4	175	7	590	Pb: 14.0-20.0; Sn: 3.5-5.0; Zn: 2.0-6.0; Cu: balance	Casting Method: Shell Mold Castingand Casting; 17-4-4 Lead Bronze; Good wear resistance and self-lubricating properties, easy to cut, poor castability. Used for general wear parts, high-speed lubricated bearings.
ZCuPb20Sn5	180	7	540	Pb: 18.0-23.0; Sn: 4.0-6.0; Cu: balance	Casting Method: Investment Casting; 20-5 Lead Bronze; High sliding performance, especially good self-lubricating properties in the absence of lubricant or with water as medium, suitable for bimetal casting materials, corrosion resistant to sulfuric acid, easy to cut, poor castability. Used for high-speed sliding bearings and crushers, water pumps, cold rolling mill bearings, parts with load up to 40MPa, corrosion-resistant parts, bimetal bearings, piston pin bushes with load up to 70MPa.
ZCuPb30	245			Pb: 27.0-33.0; Cu: balance	Casting Method: Shell Mold Castingand Casting; 30 Lead Bronze; Good self-lubricating properties, easy to cut, poor castability, prone to density segregation. Used for bimetal bushings requiring high sliding speeds, wear-reducing parts.
ZCuSn10Pb1	360	6	885	P: 0.5-1.0; Sn: 9.0-11.5; Cu: balance	Casting Method: Investment Casting; 10-1 Tin Bronze; High hardness, excellent wear resistance, not prone to seizing, good castability and machinability, good corrosion resistance in atmosphere and fresh water. Used for wear-resistant parts working under high load (below 20MPa) and high sliding speed (8m/s), such as connecting rods, bushings, bearings, gears, worms.
ZCuSn10Pb5	245	10	685	Pb: 4.0-6.0; Sn: 9.0-11.0; Cu: balance	Casting Method: Shell Mold Castingand Casting; 10-5 Tin Bronze; Corrosion resistant, especially to dilute sulfuric acid, hydrochloric acid, and fatty acids. Used for structural materials, corrosion and acid resistant fittings, and crusher liners, bearings.
ZCuSn10Zn2	270	7	785	Sn: 9.0-11.0; Zn: 1.0-3.0; Cu: balance	Casting Method: Permanent Mold Casting, Investment Casting; 10-2 Tin Bronze; Good corrosion resistance, wear resistance, and machinability, good castability, high casting density, good airtightness. Used for important pipe fittings working under medium and high loads and low sliding speeds, as well as valves, cocks, pump bodies, gears, impellers, worms.
ZCuSn3Zn11Pb4	215	10	590	Pb: 3.0-6.0; Sn: 2.0-4.0; Zn: 9.0-13.0; Cu: balance	Casting Method: Shell Mold Castingand Casting; 3-11-4 Tin Bronze; Good castability, easy to process, corrosion resistant. Used for parts working in seawater, fresh water, and steam, pipe fittings with pressure not exceeding 2.5MPa.
ZCuSn3Zn8Pb6Ni1	210	10	685	Ni: 0.5-1.5; Pb: 4.0-7.0; Sn: 2.0-4.0; Zn: 6.0-9.0; Cu: balance	Casting Method: Shell Mold Castingand Casting; 3-8-6-1 Tin Bronze; Good wear resistance, easy to process, good castability, relatively good airtightness, corrosion resistant, can work under flowing seawater. Used for parts working in various liquid fuels, seawater, fresh water, and steam (<250°C), valves and pipe fittings with pressure not exceeding 2.5MPa.
ZCuSn5Pb5Zn5	250	13	635	Pb: 4.0-6.0; Sn: 4.0-6.0; Zn: 4.0-6.0; Cu: balance	Casting Method: Permanent Mold Casting, Investment Casting; 5-5-5 Tin Bronze; Good wear and corrosion resistance, easy to process, good castability and airtightness. Used for wear and corrosion resistant parts working under relatively high loads and medium sliding speeds, such as bearings, bushings, cylinder liners, piston clutches, pump covers, worms.
ZCuZn16Si4	390	20	980	Cu: 79.0-81.0; Si: 2.5-4.5; Zn: balance	Casting Method: Shell Mold Castingand Casting; 16-4 Silicon Brass; Relatively high mechanical properties and good corrosion resistance, good castability, high fluidity, dense casting structure, good airtightness. Used for pipe fittings in contact with seawater, as well as water pumps, impellers, cocks, and castings working in atmosphere, fresh water, oil, fuel, and steam below 4.5MPa and 250°C.
ZCuZn25Al6Fe3Mn3	740	7	1665	Al: 4.5-7.0; Cu: 60.0-66.0; Fe: 2.0-4.0; Mn: 1.5-4.0; Zn: balance	Casting Method: Permanent Mold Casting, Investment Casting; 25-6-3-3 Aluminum Brass; Very high mechanical properties, good castability, relatively good corrosion resistance, tendency to stress corrosion cracking, weldable. Suitable for high-strength, wear-resistant parts, such as bridge support plates, nuts, screws, wear plates, sliders, worms.
ZCuZn26Al4Fe3Mn3	600	18	1275	Al: 2.5-5.0; Cu: 60.0-66.0; Fe: 1.5-4.0; Mn: 1.5-4.0; Zn: balance	Casting Method: Permanent Mold Casting, Investment Casting; 26-4-3-3 Aluminum Brass; Very high mechanical properties, good castability, good corrosion resistance in atmosphere, fresh water, seawater, weldable. Used for parts requiring high strength and corrosion resistance.
ZCuZn31Al2	390	15	885	Al: 2.0-3.0; Cu: 66.0-68.0; Zn: balance	Casting Method: Shell Mold Castingand Casting; 31-2 Aluminum Brass; Good mechanical properties, good corrosion resistance in atmosphere, fresh water, seawater, easy to process, good castability, good weldability. Used for general structural parts and corrosion-resistant parts.
ZCuZn33Pb2	220	15	685	Cu: 63.0-67.0; Pb: 1.0-3.0; Zn: balance	Casting Method: Shell Mold Castingand Casting; 33-2 Lead Brass; Good castability, good machinability, good mechanical properties, good brazing and weldability, poor corrosion resistance in seawater. Used for general structural parts, wear-resistant parts.
ZCuZn35Al2Mn2Fe1	475	18	1080	Al: 0.5-2.5; Cu: 57.0-65.0; Fe: 0.5-2.0; Mn: 0.1-3.0; Zn: balance	Casting Method: Shell Mold Castingand Casting; 35-2-2-1 Aluminum Brass; Good mechanical properties and corrosion resistance, good wear resistance, good castability, dense casting structure, good airtightness, good machinability, weldable. Used for wear-resistant parts working in atmosphere, fresh water, seawater, and steam, such as bearings, bushings, gears, turbines, nuts, valve seats.
ZCuZn38	295	30	685	Cu: 60.0-63.0; Zn: balance	Casting Method: Shell Mold Castingand Casting; 38 Brass; Good mechanical properties, good ductility in hot state, good ductility and machinability in cold state, easy to braze and weld, good corrosion resistance, tendency to stress corrosion cracking. Used for general structural parts and corrosion-resistant parts, such as flanges, valve seats, nuts, support plates, etc.
ZCuZn38Mn2Pb2	345	18	785	Cu: 57.0-60.0; Mn: 1.5-2.5; Pb: 1.5-2.5; Zn: balance	Casting Method: Shell Mold Castingand Casting; 38-2-2 Manganese Brass; Good mechanical properties, good corrosion resistance, good wear resistance, good castability, good machinability, can work in flowing seawater, steam, and seawater. Used for wear-resistant parts working below 300°C, such as bearings, bushings, gears, turbines, nuts.
ZCuZn40Mn3Fe1	490	15	1080	Cu: 53.0-58.0; Fe: 0.5-1.5; Mn: 3.0-4.0; Zn: balance	Casting Method: Shell Mold Castingand Casting; 40-3-1 Manganese Brass; Good mechanical properties, good corrosion resistance in fresh water, seawater, steam (below 300°C), and liquid fuel, good wear resistance, good castability, good machinability. Used for corrosion-resistant and wear-resistant parts, such as bushings, gears, sliders, turbine impeller blades, and valve seats working below 300°C.
ZCuZn40Pb2	280	20	885	Cu: 58.0-63.0; Pb: 0.5-2.5; Zn: balance	Casting Method: Shell Mold Castingand Casting; 40-2 Lead Brass; Good machinability, good mechanical properties, good castability, good corrosion resistance to atmosphere and fresh water. Used for general wear-resistant parts, such as bushings, gears, etc.