Nibrodal 138

Nibrodal 138 is a curable alloy from bedra

Fields of application

Rim, temple, bridge, hinge, closing block & pad arm 

Physical properties

Density (kg/dm³) 8,8
Melting range (°C) 1080 - 1110
E-Modulus (kN/mm²) 120
Thermal conductivity (W/m*K) 30
Coefficient of thermal expansion (10-6/K) 17
Electrical conductivity (MS/m) 3,5 (solution heat treated) / 4,8 (precipitation hardened)

Composition

Cu balance
Sn 7
Ni 13
Mn 0,2
Others max. 0,5

Other tech. values

Annealing temp. (°C) Solution heat treatment 800 - 900 (after precipitation hardening at 380°C/3h)
Hardness annealed (HV) 120
Hardness 80% reduced (HV) 320 (280)

Delivery program

Profiles Round wires / square profiles / flat wires / special profiles
Surface coatings Several electroplated coatings, upon request
Make-ups Spools / coils / rods / drums

Further product information

Please contact me and my team

Benjamin Mülders

Benjamin Mülders

Resistance & Special Wire Sales
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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