SÄCHSISCHES METALLWERK FREIBERG
Nonferrous Metal Foundry

SM Sächsisches Metallwerk Freiberg GmbH • Zuger Straße 13
D-09599 Freiberg • Telefon: +49 (0) 3731 780-0 • E-Mail: info@sm-freiberg.de

Material

Gunmetal

(Copper - Tin - Zinc alloy casting)
CuSn7Zn4Pb7-C (CC493K) EN 1982 CuSn7ZnPb (Rg7) DIN 1705
CuSn7Pb6Zn4 C93200 ASTM (UNS)

Characteristics: medium-hard bearing material with good emergency running properties , seawater resistant
Machinability: very good
Weldability: gas, arc, inert gas – bad
Solderability: Soldering – well, Brazing – medium
Applications:
  • Bearings and axle bearing shells for general mechanical engineering, toolmaking
  • medium stressed slide plates and rails
  • Piston pin bushings, crank and toggle bearings, connecting rods
  • Gear, rocker and glands
other materials (excerpt)  
CuSn5Zn5Pb2-C (CC499K) EN 1982 CuSn10Zn (Rg10) DIN 1705
Gunmetal after drinking water standard DIN 50930-6 LG1, LG2, LG4 BS1400
CuSn5Zn5Pb5-C (CC491K) EN 1982  


Tin bronze

(Copper - Tin alloy casting)
CuSn12-C (CC483K) EN 1982 CuSn12 (Gbz12) DIN 1705
PB2 BS 1400 C90800 ASTM (UNS)

Characteristics: wear resistant and tough hard material, good corrosion resistance especially against seawater
Machinability: moderate to severe
Weldability: gas, arc – medium, TIG average to good
Solderability: Soldering – very good, Brazing – fair to good
Applications:
  • moving under load spindle nuts
  • fast running worm and helical gears
  • heavily loaded bearings in machine tools
  • Cylinder for axial piston pumps
  • highly loaded actuator and slide rails
  • Starting rings and connecting rods
other materials (excerpt)  
CuSn11Pb2-C (CC482K) EN 1982 CuSn10-C (CC480K) EN 1982
CuSn12Ni2-C (CC484K) EN 1982 PB1 BS 1400


Lead bronze

(Copper - Lead - Tin alloy casting)
CuSn7Pb15-C (CC496K) EN 1982 CuPb15Sn DIN 1716
LB1 BS 1400 C93800 ASTM (UNS)

Characteristics: Bearing material with good sliding properties with temporary lack of lubricant, very good corrosion resistance
Machinability: very good
Weldability: good
Solderability: Soldering – well, Brazing – bad
Applications:
  • Bearings with high surface pressures where can strong edge pressures occur
  • fast running worm and helical gears
  • Piston pin bushings
  • Acid-resistant fittings and castings
other materials (excerpt)  
CuSn10Pb10-C (CC495K) EN 1982  


Aluminium Bronze

(Copper - Aluminum casting alloy)
CuAl10Fe5Ni5-C (CC333K) EN 1982 CuAl10Ni DIN 1714
AB2 BS 1400 C95800 ASTM (UNS)

Characteristics: Material with high strength characteristics, high erosion and cavitation resistance, good abrasion resistance, good fatigue life, excellent corrosion resistance in cold and hot seawater
Machinability: moderate to severe
Weldability: Gas welding unsuitable, arc welding – well, TIG – very good
Solderability: Soldering – sufficient brazing – medium
Applications:
  • Superheated steam fittings
  • Bushings, collector rings
  • Gears and worm wheels
  • Strips, pressure nuts, joints
  • Headers and reverse soil in apparatus and petrochemicals
  • tubular tail post, impellers, pump housing
other materials (excerpt)  
CuAl10Fe2-C (CC331K) EN 1982 CuAl10Fe DIN 1714
CuAl11Fe6Ni6-C (CC334K) EN 1982 CuAl11Ni DIN 1714


Special brass

(Copper - Zinc alloy casting)
CuZn25Al5Mn4Fe3-C (CC762S) EN 1982 CuZn25Al5 DIN 1709

Characteristics: Construction material with very high static load capacity
Machinability: medium
Weldability: no information
Solderability: no information
Applications:
  • statically very highly loaded structural parts
  • heavy-duty, slow-speed worm wheel rim
  • Internal parts of high-pressure valves
other materials (excerpt)  
CuZn35Mn2Al1Fe1-C (CC765S) EN 1982 CuZn35Al1 DIN 1709
CuZn34Mn3Al2Fe1-C (CC764S) EN 1982 CuZn34Al2 DIN 1709
CuZn16Si4-C (CC761S) EN 1982 CuZn15Si4 DIN 1709