Industeel France

Industeel Creusot

Jean Pisseloup

Jean Beguinot

Frédéric Bouchaud

Frederic Bouchaud

The invention concerns mold or mold frame parts for plastic material injection molding made of quenched and tempered martensitic stainless steel consisting, in wt. %, of: 0.02%=C=0.09%, 0.025%=N=0.12% with 0.05%=C+N=0.17%; Si=0.34% Al=0.080% with Si+23 Al=0.20% and Si+0.6 Al=0.25%; and 0.00025=Al&#xd7;N=0.0020 0; 0.55%=Mn=1.8%; 11.5%=Cr=16% optionally up to 0.48% of copper, up to 0.90% of the sum Mo+W/2, up to 0.90% of nickel, up to 0.090% of vanadium, up to 0.090% of niobium, up to 0.025% of titanium, optionally up to 0.25 of sulphur, the rest being iron and impurities derived from preparation, the composition further satisfying the condition: 6.5=F&#x2550;(Cr+Mo)+2(Si+V+Nb)&#x2212;27(C+N)&#x2212;(Ni+Mn/2+Cu/3)=13.

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Saint Symphorien de Marmagne, France

Jean Pisseloup