Brass and Bronze

Materials: Brass

Brass is mainly a binary alloy made of copper and zinc, its widespread use derives from the many properties it possesses.

Among the copper-based alloys, brasses are probably the most widespread; Brass is a ductile, malleable material with good corrosion resistance. Compared to copper it has higher values of hardness, resilience and fusibility.

Brass has such a wide range of applications that only a general list can be made of it: electricity, trucking, marine industry, chemical industry, mechanical industry, construction and furniture, etc.

The most used brass alloys

ALLOY

ALPHANUMERIC DESIGNS

COMMERCIAL NAME

CHEMICAL COMPOSITION

Cu

Al

Fe

Ni

Pb

Sn

Zn

Others

Specific weight cm3

BINARY ALLOY BRASS

CW505L

CuZn30

OT 70

min.

69,0

RESTO

8,5 8,5 8,4 8,4

max.

71,0

0,02

0,05

0,3

0,05

0,1

0,10

CW506L

CuZn33

OT 67

min.

66,0

RESTO

max.

68,0

0,02

0,05

0,30

0,05

0,10

0,10

CW508L

CuZn37

OT 63

min.

62,0

RESTO

max.

64,0

0,05

0,10

0,30

0,10

0,10

0,10

CW509L

CuZn40

OT 60

min.

59,5

RESTO

max.

61,5

0,05

0,20

0,30

0,30

0,20

0,20

TERNARIAN ALLOY BRASS

CW612N

CuZn39Pb2

OT 59

min.

59,0

1,6

RESTO

8,4 8,4 8,4 8,4 8,3

max.

60,0

0,05

0,30

0,30

2,5

0,30

0,20

CW614N

CuZn39Pb3

OT 58

min.

57,0

2,5

RESTO

max.

59,0

0,05

0,30

0,30

3,5

0,30

0,20

CW617N

CuZn40Pb2

OT 58

min.

57,0

1,6

RESTO

max.

59,0

0,05

0,30

0,30

2,5

0,30

0,20

CW618N

CuZn40Pb2Al

OT 58

min.

57,0

0,05

1,6

RESTO

max.

59,0

0,50

0,30

0,30

3,0

0,30

0,20

CW620N

CuZn41Pb1Al

OT 58

min.

57,0

0,05

0,8

RESTO

max.

59,0

0,5

0,3

0,3

1,6

0,30

0,20

** The titles and data provided in the tables are for information only and do not imply any responsibility on the part of UFG srl.

Materials: Bronze

The bronze is a metal alloy, mainly composed of copper which is enriched with other elements such as aluminum, nickel, beryllium or tin, to be combined in the most varied alloys. These alloys give the bronze various chemical-physical and mechanical characteristics.

The bronze is very versatile and can be used for bushings, skids, sliding gantry, gears, toothed wheels, bearings, furniture components, counters, coatings, etc.

Tin/Lead Bronze

Tin – bronze lead (copper alloys – tin – lead)

Alloy

Mechanical characteristics

Characteristics and fields of use

Tensile strength Rm N/mm2 Min.

Unit load of proportional deviation 0,2 %Rp0,2 N/mm2
Min.

Elongation at break A%
Min.

Hardness Brinnel HB
Min.

G-CuSn5Zn5Pb5-c UNI EN 1982 (CC491K)

250

110

13

65

Alloy for general purposes. Excellent workability by being a lead bronze. Absolute compactness so good in hydraulics.

G-CuSn7Zn4Pb7-c UNI EN 1982 (CC493K)

260

120

12

70

Resistant to sea water. Compasses and sliding blocks with load peaks max. of 4000 N / cm2. Sliding slides. Excellent workability being a lead bronze.

G-CuSn10Pb10-c UNI EN 1982 (CC495K)

220

110

8

70

Lega per supporti e bussole moderatamente ca- ricate, con proprietà antifrizione e resistenza alla corrosione. Impiegabile con lubri cazione scarsa.

G-CuSn7Pb15-c UNI EN 1982 (CC496K)

200

90

8

65

Alloy for medium-load supports, for hydraulic equipment with anti-friction and corrosion resistance properties, usable with poor or insufficient lubrication.

G-CuSn5Pb20-c UNI EN 1982 (CC497K)

180

90

7

50

Alloy for limited load supports, for hydraulic equipment and for coating on steel shells with anti-friction and corrosion resistance properties, usable with poor or insufficient lubrication.

Tin bronze

Tin bronze (copper – tin alloys)

Alloy

Mechanical characteristics

Characteristics and fields of use

Tensile strength Rm N/mm2 Min.

Unit load of proportional deviation 0,2 %Rp0,2 N/mm2
Min.

Elongation at break A%
Min.

Hardness Brinnel HB
Min.

G-CuSn10-c UNI EN 1982 (CC480K)

280

170

10

80

Alloy suitable for the construction of shaft bushings, moderately loaded, resistant to sea water, general mechanical applications (pumps, valves, sliding shoes, etc.)

G-CuSn11Pb2-c UNI EN 1982 (CC482K)

280

150

5

90

Alloy suitable for bushings and sliding slides with peak loads of maximum 12000 N/cm2 usable for bushings with high load, connecting rod bushings wheels for bridge cranes. Resistant to sea water, good workability.

G-CuSn12-c UNI EN 1982 (CC483K)

300

150

6

90

Alloy suitable for the construction of supports and bushings for steel shafts. Used for hydraulic applications, gear wheels, etc.

G-CuSn12Ni2-c UNI EN 1982 (CC484K)

300

180

10

95

Alloy for very stressed applications, good fatigue resistance, suitable for gear wheels, gears, for heavy loads and low speeds

Aluminum bronze

Aluminum bronze (copper-aluminum alloys)

Alloy

Mechanical characteristics

Characteristics and fields of use

Tensile strength Rm N/mm2 Min.

Unit load of proportional deviation 0,2 %Rp0,2 N/mm2
Min.

Elongation at break A%
Min.

Hardness Brinnel HB
Min.

G-CuAl10Ni5Fe5 UNI EN 1982 (CC333G)

650

280

13

150

For very high and stressed loads. Resistant to non-oxidizing acids. Good for marine use even in hot water. High weldability. Need for lubrication.

G-CuAl10Ni5Fe4 UNI EN 12163 / 12167 / 1653 (CW307G)

Variables depending on the physical state of production and the geometric shape.

High breaking load resistant to fatigue even at high temperatures, resistant to sea water, erosion and cavitation. Good anti-friction properties at low revolutions and high loads.

G-CuAl9Fe3 UNI 5273

55÷65 Kg/mm2

18÷23 Kg/mm2

25÷35

110÷140

Alloy suitable for chemical plants. In general mechanics it is recommended for applications where high plastic characteristics are required. Mineral water pumps, impellers, centrifuges, lightly stressed ship propellers. Need for lubrication.

G-CuAl11Fe4 UNI 5274

55÷70 Kg/mm2

24÷30 Kg/mm2

8÷20

160÷180

Alloy for chemical and mechanical uses, generally for particularly stressed pieces. Movable elements that must be resistant to corrosion and at the same time subject to mechanical stress. Need for lubrication.

G-CuAl11Fe4Ni4 UNI 5275

65÷75 Kg/mm2

30÷40 Kg/mm2

4÷10

170÷220

Alloy suitable for highly stressed cold and hot parts, excellent corrosion resistance even marine. Resistant to attrition and cavitation. Joints for turbines, strongly stressed bearings, guides and valve seats for motors. Need for lubrication.

High strength brasses

High strength brass (copper-zinc alloys)

Alloy

Mechanical characteristics

 Characteristics and fields of use

 Tensile strength  Rm N/mm2 Min.

Unit load of proportional deviation 0,2 %Rp0,2 N/mm2
Min.

Elongation at break A%
Min.

Hardness Brinnel HB
Min.

 

G-CuZn25Al5Mn4Fe3-c UNI EN 1982 (CC762S)

750

480

5

190

Alloy suitable for supports, sliding gibs, mechanical parts heavily loaded at low speeds of sliding or rotation, resistant to sea water.

G-CuZn34Mn3Al2Fe1-c UNI EN 1982 (CC764S)

620

260

14

150

Very hard alloy used for valves in the chemical and oil industry.

** The titles and data provided in the tables are for information only and do not imply any responsibility on the part of UFG srl.

Other materials

Polyurethane and rubber

Over the years we have been able to assimilate the experience required to develop and research rubber compounds for ever-increasing solutions and requirements for a wide range of materials.

Thermoplastic materials

Thermoplastic polymers are polymers formed by linear or slightly branched chains, not tied together with each other; it is therefore sufficient to increase the temperature to bring them to a viscous state and thus form them.

Other services

Automatic precision turning

UFG srl carries out CNC turning operations on metal parts and plastic components. Machining is carried out with numerical control machines with automatic loading of the bar with diameters of 1 mm to 85 mm.

Electroplating

The galvanoplasty provides for the laying of thin layers of metal on surfaces built with 3D prototyping system through FDM process, this process can be decorative or functional.

Welding

Welding work. SMAW Shielded Metal Arc Welding, MIG welding ((Metal-arc Inert Gas), OFW – OxiFuel gas Welding, TIG welding ((Tungsten Inert Gas). These are some of our welding techniques.