Patent ID: 7077883

Claim:
Pre-alloyed powder comprising a composition of formula Fe a Co b Ni c Mo d W e Cu f Sn g (DS) h , a, b, c, d, e, f, g and h representing the percentages by weight of the components, DS being either one of an oxide of one or more metals from the group consisting of Mg, Mn, Ca, Cr, Al, Th, Y, Na, Tj and V, a carbide of one or more metals from the group consisting of Fe, W, Mo, Zr and Ti, or a mixture of said oxide and of said carbide, wherein a+b+c+d+e+f+g+h=100, d≦8, e≦10, h≦2, 5≦f+g≦45, 6.4≦f/g≦25 and 1.5≦[a/(b+c+2d+2e)]−4h≦33, the powder further having a loss of mass by reduction in hydrogen not exceeding 2%, as measured according to the standard ISO 4491-2:1989.