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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 |
Elongation at break A% |
Hardness Brinnel HB |
||
|
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 |
Elongation at break A% |
Hardness Brinnel HB |
||
|
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 |
Elongation at break A% |
Hardness Brinnel HB |
||
|
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 |
Elongation at break A% |
Hardness Brinnel HB |
|
|
|
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.
