Alloy 330 Nb
Werkstoff – Nr. 1.4887
DIN 10095

Alloy 330 Nb is a special alloy similar in physical and electrical characteristics to regular NiCr 40/20 (1.4886), but additionally doped by 1.0 to 1.5% of Columbium. Additional content of Columbium in Alloy 330 Nb increases mechanical strength at elevated temperatures. For electrical and heating application reasonable to use pure Alloy 330 Nb due to longer life time of elements in operational process. The recommended field of application for this alloy is the manufacturing of furnace parts such as conveyer belts, wire meshes or other products working at fluctuating temperatures up to 1100 °C.

Chemical composition

Iron Fe Bal. Nickel Ni 33-37% Silicon Si 1-2% Chromium Cr 20-23% Manganese Mn max 2% Carbon C max 0.15%
Sulfur S max 0.015% Nitrogen N max 0.11% Phosphorus P max 0.03% Other Nb 1-5%

Physical properties

Density g/cm3 Electrical resistivity at 20°C Ω mm2/m Melting point °C Max continuous operating temperature in air °C Magnetic properties
7.95 1.09 1380 1050 non-magnetic

Mechanical properties

Yield strength Rp0.2 MPa Tensile strength Rm MPa Elongation A% Hardness Hv
230 500-750 32 223

Product forms

Product Size, mm Condition of supply
wire 0.2 – 12.0 soft annealed


  • conveyor belts / wire meshes
  • anchoring and fastening systems
  • industrial furnace parts

Our customers can buy Alloy 330 Nb wire online according to their requests.