Patent ID: 6149862
Filing Date: 2000-11-21
Classification: C22C

Abstract:
An alloy, based on an iron-silicon alloy, exhibiting improved resistance to hydrogen embrittlement and sulfide stress cracking in a hydrogen-charging medium, said alloy comprising:about 1.3% to 1.7% weight of Si;at least one alloying element selected from the group consisting of: Be, Mg, Al, Ca, Sc, Ti, V, Cr, Mn, Co, Ni, Cu, Zn, W, Mo, Ge, Se, Rb, Zr, Nb, Ru, Ag, Cd, La, Ce, Pr, Nd, Gd, Tb, Dy, Er, Re, Os, Pb, Bi, U, N and other REM and wherein said at least one alloying element is individually present in a concentration up to about 0.10% weight; andsubstantially the rest comprising Fe and inevitable impurities;wherein Fe is a donor element with respect to Si and Si is an acceptor element with respect to Fe.