bedra electronic wire Bl4 out of a tin-bronze alloy for various applications (ribbon, heating conductors / resistance wire, special cables, bobbins, connectors, etc.).

Standardization and composition

Norm CuSn 4
DIN 17662
EN DIN 12166 CW 450 K
CDA UNS not standardized
Alloy composition Average values according to standard (%)
Cu balance
Sn 4.0
P 0.10
Others max. 0.5

Physical properties

Density (kg/dm³) 8.9
Melting range (°C) 960 - 1060
E-Modulus (kN/mm²) 125
Thermal conductivity (W / m x K) 90
Coefficient of linear mean expansion (10-6/K) 18.2
Electric conductivity (m / Ω x mm²) 12
Electric conductivity (IACS %) ~ 20
Resistiviy (Ω x mm² /m) 0.0833

Further product information

Please contact me and my team

Ute Schmidt

Ute Schmidt

Electronic Wires Sales for Europe
bedra Germany

George Kelley

George Kelley

Sales Manager Welding & ELAS North America
bedra USA

Shawn Lv

Shawn Lv

Sales Manager ELAS Asia (without China)
bedra Hong Kong

Berkenhoff GmbH (headquarters)

  • Kinzenbach plant
  • Berkenhoffstrasse 14
  • 35452 Heuchelheim
  • Germany

Berkenhoff GmbH

  • Merkenbach plant
  • Rehmühle 1
  • 35745 Herborn
  • Germany

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