IN 1982 CC483K | CuSn12

B12 | Bronze Copper Alloy Tin

Available formats: Bars, Tubes, Caps, Plates and Plates.

features

The B12 alloy, with the C90800 designation, complies with the key legislation that includes the Federal Safe Drinking Water Act 1974 - SDWA, the Federal Potable Water Reduction Act of 2011 and California Ab1953.

 

Material with good wear resistance, resistant to corrosion and salt water. CuSn12Ni2-C - GS and CuSn11Pb2 - GS materials were developed from this alloy. They are distinguished by greater stability and wear resistance, together with improved anti-friction properties.

Applications

Speed reducers, worm gears.

 

B12 tin bronze alloys, such as the C90800, are generally found in heavy duty gear, bush and bearing applications where there is high strength and low speeds and heavy loads. Other high strength applications for these alloys are pump impellers, piston rings, steam fittings and valve bodies. C908 tin bronze castings are used in components of movable bridges, turntables for bridges and other structures for fixed and expansion bearings with slow or intermittent movement with heavy loads.

Chemical composition

%
Cu
Neither
P
Pb
Sn
Zn
Al
Fe
S
Sb
Others
Si

Min.

85

-

-

-

11

-

-

-

-

-

-

-

Max.

89

0,5

0,3

0,25

13

0,25

0,005

0,15

0,05

0,2

-

0,005

Chemical composition according to ASTM B505 / B505M-18

features

The B12 alloy, with the C90800 designation, complies with the key legislation that includes the Federal Safe Drinking Water Act 1974 - SDWA, the Federal Potable Water Reduction Act of 2011 and California Ab1953.

 

Material with good wear resistance, resistant to corrosion and salt water. CuSn12Ni2-C - GS and CuSn11Pb2 - GS materials were developed from this alloy. They are distinguished by greater stability and wear resistance, together with improved anti-friction properties.

Applications

Speed reducers, worm gears.

 

B12 tin bronze alloys, such as the C90800, are generally found in heavy duty gear, bush and bearing applications where there is high strength and low speeds and heavy loads. Other high strength applications for these alloys are pump impellers, piston rings, steam fittings and valve bodies. C908 tin bronze castings are used in components of movable bridges, turntables for bridges and other structures for fixed and expansion bearings with slow or intermittent movement with heavy loads.

Chemical composition

Element
Min.%
Max. %

Cu


Neither


P


Pb


Sn


Zn


Al


Fe


S


Sb


Others / Alloys


Si

85


-


-


-


11


-


-


-


-


-


-


-

89


0,5


0,3


0,25


13


0,25


0,005


0,15


0,05


0,2


-


0,005

Chemical composition according to ASTM B505 / B505M-18

International Equivalences

BRONCESVAL
ISO / EN
W Nr / DIN
UNS / CDA
SAE
BS
DIN / ISO
ASTM

B12

CuSn12

CC483K

C90800

-

PB2

-

B-427

Mechanical properties

Tensile strength
(MPa)
Elastic limit
(MPa)
Elongation
(%)
Brinell hardness
(HB)
Observations

310

152

14

95

-

Mechanical properties according to ASTM B427-09 (2015)

International Equivalences

BRONCESVAL B12
ISO / EN CuSn12
W Nr / DIN CC483K
UNS / CDA C90800
SAE -
BS PB2
DIN / ISO -
ASTM B-427

Mechanical properties

Tensile strength (MPa) 310
Elastic Limit (MPa) 152
Elongation (%) 14
Brinell hardness (HB) 95
Observations -

Mechanical properties according to ASTM B427-09 (2015)

General Physical Properties

Melting Point (Liquid) 999 ° C
Melting Point (Solid) 831º C
Density 8.6 gm / cm at 20 ° C
Specific weight 8,6
Electric conductivity 6.2 MegaSiemens / cm at 20 ° C
Thermal conductivity 54 W / m at 20 ° C
Thermal expansion coefficient 18.510 -6 per ° C (20 ° -200 ° C)
Specific heat capacity 377.1 J / kg at 293 ° C
Tension Elasticity Module 90000 Mpa
Magnetic Permeability * 1

Physical properties provided by CDA

Manufacturing Properties

Welding Good
Braised Good
Oxyacetylene Welding Half
Gas arc welding Half
Coated Metal Arc Welding Half
Machinability Classification 30

Manufacturing properties provided by CDA

Formats

  • B12 Bronze Bars
  • B12 Bronze Tubes
  • B12 Bronze Caps
  • B12 Bronze Plates
  • Bronze plates B12

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