(EP963615-A1)      A fuel cell contains a membrane electrode unit, two current collectors and/or a cell frame and/or a bipolar electrode. One or more of the solid constructional parts consists of an iron alloy containing 0-0.06 (preferably 0-0.03) wt.% C, 0-2 (preferably 0-1) wt.% Si, 8.25-46.5 (preferably 16.5-25.0) wt.% Cr, 1.25-14.0 (preferably 2.5-7.0) wt.% Mo, 2.25-40.5 (preferably 4.5-26.0) wt.% Ni, 0-4.0 (preferably 0-2.0) wt.% Cu, 0-13 (preferably 0-6.5) wt.% Mn, 0.02-1 (preferably 0.04-0.5) wt.% N, 0-0.5 (preferably 0-0.25) wt.% Nb, 0-0.09 (preferably 0-0.045) wt.% P, 0-0.06 (preferably 0-0.03) wt.% S and balance Fe.    USE -   Used for construction of a fuel cell (claimed), especially as a low temperature fuel cell, e.g. a polymer-electrolyte-membrane (PEM) fuel cell.    ADVANTAGE -   The iron alloy is inexpensive and corrosion resistant even in direct contact with acidic membrane electrolyte, has good formability (deep drawability), exhibits a low junction resistance and can be produced as a thin lightweight structured plate with gas and liquid distribution structures.    (JP2001508589-W)      A fuel cell contains a membrane electrode unit, two current collectors and/or a cell frame and/or a bipolar electrode. One or more of the solid constructional parts consists of an iron alloy containing 0-0.06 (preferably 0-0.03) wt.% C, 0-2 (preferably 0-1) wt.% Si, 8.25-46.5 (preferably 16.5-25.0) wt.% Cr, 1.25-14.0 (preferably 2.5-7.0) wt.% Mo, 2.25-40.5 (preferably 4.5-26.0) wt.% Ni, 0-4.0 (preferably 0-2.0) wt.% Cu, 0-13 (preferably 0-6.5) wt.% Mn, 0.02-1 (preferably 0.04-0.5) wt.% N, 0-0.5 (preferably 0-0.25) wt.% Nb, 0-0.09 (preferably 0-0.045) wt.% P, 0-0.06 (preferably 0-0.03) wt.% S and balance Fe.    USE -   Used for construction of a fuel cell (claimed), especially as a low temperature fuel cell, e.g. a polymer-electrolyte-membrane (PEM) fuel cell.    ADVANTAGE -   The iron alloy is inexpensive and corrosion resistant even in direct contact with acidic membrane electrolyte, has good formability (deep drawability), exhibits a low junction resistance and can be produced as a thin lightweight structured plate with gas and liquid distribution structures.