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G-CuPb20Sn | 2.1188 Material Datasheet

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Material Description

Material Number Material Name Material Number (single) Standard Scope Standard Status Country Successor VDA 231-106 classification
2.1188 (DIN 1716 : 1981-11) G-CuPb20Sn 2.1188 DIN 1716 : 1981-11 DIN 1716 : 1981-11 replaced by DIN EN 1982 : 1998-12 Replaced Germany CuSn5Pb20-C 3.2 1)
1) Remark: G-CuPb20Sn (former G-SnPbBz20) is a bearing material. It is characterised by very good sliding, especially dry-operating properties by lack on lubrication or water lubrication. The material is used as composite cast material and is resistant against sulfuric acid. Compared to the G-CuPb15Sn (2.1182), the G-CuPb20Sn is not so well castable. The G-CuPb20Sn is used in bearings and castings, also at high sliding speeds, miller machines, water pumps, rolling mills, top loadings up to p = 4000 N/cm^2 with good lubrication. The alloy is used for corrosion resistant armatures and casting, for highly stressed bearings in combustine engines, for example for cock sockets up to p = 7000 N/cm^2 stress. Machining properties: Grindability: very good Soft soldering: good Hard soldering: poor Gas fusion welding: poor Grindability (mech): good Galvanisability: good Immersing tin-plating: good

Chemical Composition

Cu [%] Fe [%] Ni [%] P [%] Pb [%] Sb [%] Sn [%] Zn [%]
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Material Compliance

REACh RoHS
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Mechanical Properties

Casting Method Condition Condition Number Designation of the delivered Condition DIN Delivery Condition EN Temperature [°C] Tensile Strength [MPa] Yield Strength (0.2% offset) [MPa] Elongation A [%] Hardness HB | HBW
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Physical Properties

Temperature [°C] Melting Temperature [°C] Density [g/cm³] Young's Modulus [GPa] Mean Coefficient of Thermal Expansion (reference 20°C) [10^-6*K^-1] Thermal Conductivity [W/(m*K)] Linear Shrinkage [%] Electric Conductivity [MS/m]
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Cross Reference

Material Name Country Standard
CuPb20Sn5 France NF A 53-707-87
CuPb20Sn5 Great Britain BS 1400-85
Br05S25 Russia GOST 613-79
CuPb20Sn5 International ISO 1338-77
LBC5 Japan JIS H 5115
CuSn5Pb20 Poland PN-79/H-87026
öCuPb20Sn5 Hungary MSZ 8579-84
CuSn5Pb20-C (CC497K) Germany DIN EN 1982