A triple layer core of low carbon outers (1.25mm) complete with a Blue paper steel core (1mm). Blue paper steel has excellent edge holding with very fine edge geometries and great wear resistance!
C: 1.05 - 1.15%
Mn: 0.2 - 0.3%
Supplied in. a 3.5mm x 33mm x 350mm piece complete with heat treament instuructions