Nibrodal 138

Range of application

Nibrodal 138

Recommended for:

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

Composition

Cubalance
Sn7
Ni13
Mn0,2
Othersmax. 0,5

Physical properties

Density kg/dm³8,8
Melting range °C1080-1110
E-Modulus kN/mm²120
Thermal conductivity W/m*K30
Coefficient of thermal expansion 10-6/K17
Electrical conductivity MS/m3,5 (solution heat treated) / 4,8 (precipitation hardened)

Other technical values

Annealing temp. °CSolution heat treatment 800-900(after precipitation hardening at 380/3h)
Hardness annealed HV120
Hardness 80% reduced HV320(400)

Delivery programme

Profilesround wires / square profiles / flat wires / special profiles
Surface coatingsseveral electroplated coatings, upon request
Make-upsspools / coils / rods / drums

Further product information