Form part of an iron-nickel-cobalt alloy

Mold component for the production of reinforced carbon fiber plastics existing objects of an iron-nickel-cobalt alloy having (in mass%) Ni 32.5 to 33.5% Co > 3.5 to 0.04 to 0.1% Si > 0.03 to 0.1% Nb 0.001 to 0.1% C 0.005 to max. 0.009% Mo Max. 0.05% Cr Max. 0.05% S Max. 0.003% N Max. 0.004% Ti Max. 0.01% Cu Max. 0.05% P Max. 0.005% mg Max. 0.005% Ca Max. 0.003% Zr Max. 0.05% O 0.005% Fe Rest, wherein the alloy in the temperature range of 20-200 ° C 10 has an average thermal expansion coefficient of <1.3 x