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Bronze

Bronze


We stock an extensive program for several continuously cast bronze alloys. The advantage of continuously cast material compared to other production methods is that the balance between price, material and quality is excellent, especially compared to static cast bronze.

The most common bronze is leaded bronze Rg7 (CuSn7ZnPb). Rg7 has a very good lubricant structure and is excellent to work with.

For higher strain use and use in corrosive environments we have CuSn12 available from stock. Due to higher tin and lower lead and zinc values CuSn12’s mechanical values are higher than Rg7’s values. The self lubricating properties are relatively poor in comparison with Rg7 due to the lower lead and zinc values. 

Leaded bronze alloys have a higher lead content than Rg7. When there are high requirements set for the self lubricating properties and pressure is not too high lead bronze is a suitable alloy. The high lead component provides a very good lubricant quality and the material is softer. The maximum application temperature for lead bronze should be lower as the lead will start to melt at rather low temperatures.

Besides the standard alloys we can provide you with many different alloys. Our suppliers have (limited) stocks in BS-1400 PB1, BS-1400 PB2, CuSn12Ni, Rg5 etc.

For continuously cast material – depending on size and alloy – there is a minimum order. Tubes can be produced centrifugally cast in many alloys and any size you require.


Use the table below to navigate through the page. Click on "Show sizes" to display the available dimensions.
DIN EN Bar
bar
Tube
tube
Rectangle
rectangle
Square
square
Hexagon
hexagon

CuSn5ZnPb

CuSn5Zn5Pb5-C

On request On request On request On request On request

CuSn7ZnPb

CuSn7Zn4Pb7-C

Show sizes Show sizes Show sizes Show sizes Show sizes

CuSn10Zn

-
On request On request On request On request -

CuSn10

CuSn10-C

On request On request On request On request -

CuSn12

CuSn12-C

Show sizes Show sizes Show sizes Show sizes -

CuSn12Ni

CuSn12Ni2-C

On request On request On request On request -

CuSn12Pb

CuSn11Pb2-C

On request On request On request On request -
Show sizes = standard On request= on request
Delivery program Tolerances

Delivery program bronze

 

Bar
round bar

Tube
tube

Square
square

Rectangle
rectangle

Hexagon
hexagon

CuSn5ZnPb
on request
on request on request on request on request
CuSn7ZnPb
13 mm - 454 mm
21 x 9 mm - 404 x 346 mm 22 mm - 282 mm 22 x 7 mm - 510 x 28 mm 17 mm - 65 mm
CuSn10Zn
on request
on request on request on request -
CuSn10
on request
on request on request on request -
CuSn12
13 mm - 454 mm
21 x 9 mm - 404 x 346 mm 22 mm - 202 mm 22 x 7 mm - 312 x 62 mm -
CuSn12Ni
on request
on request on request on request -
CuSn12Pb
on request
on request on request on request -

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Tolerances (sufficient for lengths up to 250 mm)
     
Outside diameter
Outside
Inside
up to Ø 117 mm + 0 / + 1 mm - 0 / - 1 mm
Ø 122 - Ø 202 mm + 0 / + 1,5 mm - 0 / - 1,5 mm
Ø 212 - Ø 404 mm + 0 / + 2 mm - 0 / - 2 mm
     
square and rectangle + 0 / +2 mm  
     

Standard lengths: ca. 3000 mm, 2000 mm, 1000 mm and 500 mm.

Our foundries are able to centrifugally cast (flanged) tubes in any size, up to a diameter of Ø 2000 mm and length up to 3000 mm in all current alloys.

On request:

  • Finished machined components to your requirements
  • Pattern casting
The given weights are theoretical.

The machining allowance on the finished sizes is sufficient for lengths < 250 mm.

For finished part lengths > 250 mm - especially diameters > 172 mm - a higher machining allowance is necessary

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CuSn5ZnPb | CuSn5Zn5Pb5-C

       
  DIN EN  
Alloy CuSn5ZnPb CuSn5Zn5Pb5-C  
  RG5    
Standard DIN 1705 EN 1982  
Alloy number 2.1096 CC491K  
       
Chemical composition   Mechanical properties
     
Cu 84,0 - 86,0 83,0 - 87,0   DIN EN
Sn 4,0 - 6,0 4,0 - 6,0 Rm ≥ 220 ≥ 250
Zn 4,0 - 6,0 4,0 - 6,0 Rp 0,2 ≥ 90 ≥ 110
Pb 4,0 - 6,0 4,0 - 6,0 A5 ≥ 16 ≥ 13
Ni   2,0 max. HB ≥ 60 ≥ 65
P   0,10 max.  
       
kg/dm3 8,7    
Condition GS GC, GZ  
Characteristics Construcion material. Mainly used in water and steam armature up to 255°C. Nowadays mostly replaced by RG7.

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CuSn7ZnPb | CuSn7Zn4Pb7-C

       
  DIN EN  
Alloy CuSn7ZnPb CuSn7Zn4Pb7-C  
  RG7    
Standard DIN 1705 EN 1982  
Alloy number 2.1090 CC493K  
       
Chemical composition   Mechanical properties
     
Cu 81,0 - 85,0 81,0 - 85,0   DIN EN
Sn 6,0 - 8,0 6,0 - 8,0 Rm ≥ 270 ≥ 260
Zn 3,0 - 5,0 2,0 - 5,0 Rp 0,2 ≥ 120 ≥ 120
Pb 5,0 - 7,0 5,0 - 8,0 A5 ≥ 16 ≥ 12
Ni 2,0 max. 2,0 max. HB ≥ 70 ≥ 70
P 0,2 max. 0,10 max.  
       
kg/dm3 8,8    
Condition GC GC, GZ  
Characteristics Most common used bronze alloy, also called bearing bronze. Suitable for bearings with middle duty load, good sliding and dry running properties and good machinability. Main purposes: bearings, slide strips and valves. RG7 has a very good lubricant structure.

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CuSn10Zn

       
  DIN EN  
Alloy CuSn10Zn not specified  
  RG10    
Standard DIN 1705    
Alloy number 2.1086    
       
Chemical composition   Mechanical properties
     
Cu 86,0 - 89,0     DIN  
Sn 9,0 - 11,0   Rm ≥ 270  
Zn 1,0 - 3,0   Rp 0,2 ≥ 120  
Pb 1,5 max.   A5 ≥ 16  
Ni 2,0 max.   HB ≥ 70  
P 0,05 max.    
       
kg/dm3 8,7    
Condition GS (GC and GZ also possible)  

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CuSn10 | CuSn10-C

       
  DIN EN  
Alloy CuSn10 CuSn10-C  
Standard DIN 1705 EN 1982  
Alloy numbers 2.1050 CC480K  
       
Chemical composition   Mechanical properties
     
Cu 88,0 - 90,0 88,0 - 90,0   DIN EN
Sn 9,0 - 11,0 9,0 - 11,0 Rm ≥ 270 ≥ 280
Zn 0,5 max. 0,5 max. Rp 0,2 ≥ 130 ≥ 170
Pb 1,0 max. 1,0 max. A5 ≥ 18 ≥ 10
Ni 2,0 max. 2,0 max. HB ≥ 70 ≥ 80
P 0,2 max. 0,2 max.  
       
kg/dm3 ca. 8,7    
Condition GS GS, GC, GZ  
Characteristics Construction material with higher elongation and good corrosion- and seawater resistance.

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CuSn12 | CuSN12-C

       
  DIN EN  
Alloy CuSn12 CuSn12-C  
  Gbz12    
Standard DIN 1705 EN 1982  
Alloy number 2.1052 CC483K  
       
Chemical composition   Mechanical properties
     
Cu 84,0 - 88,5 85,0 - 88,5   DIN EN
Sn 11,0 - 13,0 11,0 - 13,0 Rm ≥ 280 ≥ 300
Zn 1,0 max. 0,5 max. Rp 0,2 ≥ 140 ≥ 150
Pb 1,0 max. 0,7 max. A5 ≥ 8 ≥ 6
Ni 2,0 max. 2,0 max. HB ≥ 90 ≥ 90
P 0,4 max. 0,6 max.  
       
kg/dm3 ca. 8,7    
Uitvoering GC GC, GZ  
Characteristics Corrosion and seawater resistance, high wear resistance suitable even at high sliding speeds. Better mechanical values than RG7 because of a higher content of tin and less content of lead and zinc. Because of that the dry running properties and the machinability are not as good as for RG7. Typical use: bearings with high sliding speed, heavy duty worm wheels and spindles.

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CuSn12Ni | CuSn12Ni2-C

       
  DIN EN  
Alloy CuSn12Ni CuSn12Ni2-C  
  Gbz12Ni    
Standard DIN 1705 EN 1982  
Alloy number 2.1060 CC484K  
       
Chemical composition   Mechanical properties
     
Cu 84,0 - 87,0 84,5 - 87,5   DIN EN
Sn 11,0 - 13,0 11,0 - 13,0 Rm ≥ 300 ≥ 300
Zn 0,4 max.. 0,4 max. Rp 0,2 ≥ 170 ≥ 180
Pb 0,3 max. 0,3 max. A5 ≥10 ≥ 10
Ni 1,5 - 2,5 1,5 - 2,5 HB ≥ 90 ≥ 95
P 0,2 max. 0,05 - 0,40  
       
kg/dm3 8,6    
Condition GC GC, GZ  
Characteristics Typical for CuSn12Ni is it's higher mechanical values in comparison with CuSn12. Typical use: heavy duty spindles, valves or worm wheels.

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CuSn12Pb | CuSn11Pb2-C

       
  DIN EN  
Alloy CuSn12Pb CuSn11Pb2-C  
  Gbz12Pb    
Standard DIN 1705 EN 1982  
Alloy number 2.1061 CC482K  
       
Chemical composition   Mechanical properties
     
Cu 84,0 - 87,0 83,5 - 87,0   DIN EN
Sn 11,0 - 13,0 10,5 - 12,5 Rm ≥ 280 ≥ 280
Zn 1,0 max. 2,0 max. Rp 0,2 ≥ 140 ≥ 150
Pb 1,0 - 2,0 0,7 - 2,5 A5 ≥ 7 ≥ 5
Ni 2,0 max. 2,0 max. HB ≥ 85 ≥ 90
P 0,2 max. 0,4 max.  
       
kg/dm3 8,7    
Condition GC GC, GZ  
Characteristics CuSn12Pb has in comparison with CuSn12 better dry running properties due to its lead content. Typical use is often where the dry running properties of RG7 are necessary, and the mechanical values of CuSn12 are needed. CuSn12Pb offers in this context a nice solution between those two alloys.

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