Abstract: The invention concerns a ferromagnetic alloy whereof the chemical composition comprises, in wt. %: 32.5%?Ni?72.5%; 5%?Cr?18%; 0.01%?Mn?4%; C?1%; optionally one or more elements selected among Mo, V, Co, Cu, Si, W, Nb and Al, the total contents of said elements being not more than 10%, the remainder being iron and impurities resulting from preparation, the chemical composition further satisfying the following relationships: Cr?1.1Ni+23.25?0%; 45Cr+11Ni?1360; Ni+3Cr?60% if Ni?37.5; Cr?7.5 if Ni?37.5. The invention also concerns the use of said alloy for making heating elements for induction heated cooking appliances.

Abstract: The invention relates to a cooking vessel comprising a base made of a multilayer material and a side wall, the said multilayer material comprising, in succession from the outside of the vessel to the inside of the vessel: an outer part, having a thickness eE, consisting of a layer of a ferromagnetic Nickel based alloy having a Curie temperature of between 30 and 350° C. and a thermal expansion coefficient of greater than or equal to 6.5.10?6 K?1, and a core, having a thickness ec, comprising at least one layer selected among aluminium, aluminium alloy and copper.

Abstract: The invention concerns a ferromagnetic alloy whereof the chemical composition comprises, in wt. %: 32.5% ?Ni ?72.5%; 5% ?Cr?18%; 0.01% ?Mn?4%, C?1%; optionally one or more elements selected among Mo, V, Co, Cu, Si, W, Nb and Al, the total contents of said elements being not more than 10%, the remainder being iron and impurities resulting from preparation, the chemical composition further satisfying the following relationships: Cr?1.1Ni+23.25?0%; 45Cr+11Ni?1360 ;Ni+3Cr?60% if Ni?37.5; Cr?7.5 if Ni?37.5. The invention also concerns the use of said alloy for making heating elements for induction heated cooking appliances.

Abstract: The invention relates to a cooking vessel comprising a base made of a multilayer material and a side wall, the said multilayer material comprising, in succession from the outside of the vessel to the inside of the vessel: an outer part, having a thickness eE, consisting of a layer of a ferromagnetic Nickel based alloy having a Curie temperature of between 30 and 350° C. and a thermal expansion coefficient of greater than or equal to 6.5.10?6 K?1, and a core, having a thickness ec, comprising at least one layer selected among aluminium, aluminium alloy and copper.

Abstract: Cooking vessel intended to be induction heated, comprising a heating part made of a ferromagnetic alloy having a Curie temperature of between 150° C. and 370° C. and a magnetostriction coefficient &lgr;s≦5×10−6 in absolute value. FeNiCuX ferromagnetic alloy for the manufacture of the cooking vessel, the chemical composition of which comprises from 50% to 85% of Ni, less than 50% of Cu, less than 12% of X=Cr+Mo+Mn+Si+Al+W+Nb+V+Ti, the balance being iron and impurities; the composition satisfies the relationships (35/25)×(75-Ni)≦Cu≦(50/35)×(85-Ni) and (7/20)×(Ni-65)≦X≦(12/35)×(Ni-50). Production method and method of use.

Abstract: Cooking vessel intended to be induction heated, comprising a heating part made of a ferromagnetic alloy having a Curie temperature of between 150° C. and 370° C. and a magnetostriction coefficient &lgr;s≦5×10−6 in absolute value. FeNiCuX ferromagnetic alloy for the manufacture of the cooking vessel, the chemical composition of which comprises from 50% to 85% of Ni, less than 50% of Cu, less than 12% of X=Cr+Mo+Mn+Si+Al+W+Nb+V+Ti, the balance being iron and impurities; the composition satisfies the relationships (35/25)×(75−Ni)≦Cu≦(50/35)×(85−Ni) and (7/20)×(Ni−65)≦X≦(12/35)×(Ni−50). Production method and method of use.