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E-mail: kmmf@kmmf.lv
 
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CuSn7Zn4Pb7-C (CC493K) Rg7

Standards

Krāsaino Metālu Manufaktūra
cast alloy
EN 1982:2008
German
DIN
British
BS
US
ASTM

Russian
GOST

Rg7 CuSn7Zn4Pb7-C
(CC493K)
GC-CuSn7ZnPb
(DIN 1705, Nr.2.1090.04)
- C93200
(ASTM B 505)
SAE 660
 

Other: ISO CuSn7Pb7Zn3, UNE C-3530, SAE 660, DS 5426.
The equivalence between the standards is not absolute and some variations in composition can exist.

Chemical Composition in %

 

Cu* Sn Pb Zn Ni Al Fe Mn P S Si Sb As Cr Bi Cd Se

Min.

81.0 5.2 5.0 2.0 - - - - - - - - - - - - -

Max.

86.0 8.0 8.0 5.0 2.0 0.01 0.2 - 0.1 0.1 0.01 0.3 - - - - -

Mechanical Properties:

Rm

Tensile strength min.

260 N/mm2

Rp0.2

Proof Strength min.

120 N/mm2

A

Elongation min.

12 %

HB

Brinell hardness min.

70 HBW

Properties:

  • material for plain bearings in mechanical engineering with medium loads;
  • very good emergency running;
  • high wear resistance;
  • sea water resistant.

Application:

  • bearings of cranes and elevators;
  • minor machine tool bearings;
  • piston pin bushes for load up to 50N/mm2;
  • bearing for packing machines and electric motors;
  • general bearing in mechanical engineering;
  • valve and gate seat rings;
  • guide bushes in hydraulic cylinders;
  • slip rings.

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Birojs +371 67 40 80 15
kmmf@kmmf.lv
Daugavgrīvas iela 116, Rīga, Latvija, LV-1055