Glow plug for internal combustion engines

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Glow plug (1) for placement in the combustion chamber with a resistance element more air-consolidating internal combustion engines (17), from two series-connected resistance spirals (20, 21) is composed, of which the combustion-chamber-side resistance spiral (20) serves as a heating element and the combustion chamber-farresistance spiral (21) acts as a result of their high positive temperature resistance- coefficientresistance spiral as a regulating element and the (21) from a co- [...] -iron alloy, has a face centered cubic material structure is made during all operating conditions of the sheathed element, characterized in that the cobalt iron alloy without Manganese adjunct is 5 ≤ Fe ≤ 20 weight percent and from, radical Co and being inevitable impurities ≤ 0, 1% by weight, the produced by melt metallurgy is, wherein for deoxidation of the melt additions of hafnium or rare earths, in particular cerium misch metal are used.