Industeel France

Valeo Materiaux De Friction

Frédéric Bouchaud

Jean Beguinot

Jean Pisseloup

Philippe Pineda

Gérard Crosland

Stephane Duchatel

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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Montchanin, France

Frédéric Bouchaud