... ,O2,D3,L6,M2,W18,A8,etc. 2.Forged, Annealed, 4 Sides Machined. 3.Rounds,Flats1. Tool steel: 1.23792. Properties: Cold ... tools.3.Manufacture: Electric furnace steel, vacuum treated.4.Condition of delivery: forged, annealed, 4 sides machined.5.Hardness: max. 255 HB6.Chemical ...