Husaaa
now i found it W1 is the German steel 1.1545
has a lot C around 1.0
1.1545
Chemical composition in weight %: 1.03% C, 0.17% Si, 0.22% Mn, 0.014% P, 0.012% S, 0.07% Cr,
0.01% Mo, 0.10% Ni, 0.14% V.
Note: Tool steels, unalloyed. Austenitizing temperature: 790 oC.
Source: HTDG, 2008.