About YCS3 "YCS3" (YK30) Hitachi high carbon tool steel, JIS G4404 SKS93 or JIS G440
4 SK3-0.1 ~ 0.1 ~ 0.6Gr, fine steel vacuum degassing, stable quality, good hardenability, cold hardened oil, toughness and good wear resistance and tool durability. YK30 oil system in the SK3 steel components to add a little of Cr (chromium), carbon tool steel to improve the usually easy to fragmentation of nature and to extend tool life. A small amount of production of carbon tool steel. Oil quenching, heat treatment is easy.
C C :1.00-1.10
Si Si :0.15-0 .50
Mn Mn :0.60-1.10
Cr Cr :0.10-0 .50
P P: 0.030 The following
S sulfur: 0.030 The following
Forged: uniformly heated to 850 ℃, the temperature in this chase forging, hardness: HRC60 or more
Quenching heated to 790-850 ℃, hardened in oil
Tempering heated to 150-200 ℃, cooling in still air
Annealing to 750-780 ℃, to stay at this temperature for 1-2 hours, allowed to furnace cooling
Gauge, razor, file, cutting tools: tempering temperature 150 ~ 200 ℃;
Die, die stamping, bending, finishing mold: tempering temperature 180 ~ 230 ℃;
Steel chisel, woodworking cutting tools: tempering temperature of 200 ~ 250 ℃.
4 SK3-0.1 ~ 0.1 ~ 0.6Gr, fine steel vacuum degassing, stable quality, good hardenability, cold hardened oil, toughness and good wear resistance and tool durability. YK30 oil system in the SK3 steel components to add a little of Cr (chromium), carbon tool steel to improve the usually easy to fragmentation of nature and to extend tool life. A small amount of production of carbon tool steel. Oil quenching, heat treatment is easy.
C C :1.00-1.10
Si Si :0.15-0 .50
Mn Mn :0.60-1.10
Cr Cr :0.10-0 .50
P P: 0.030 The following
S sulfur: 0.030 The following
Forged: uniformly heated to 850 ℃, the temperature in this chase forging, hardness: HRC60 or more
Quenching heated to 790-850 ℃, hardened in oil
Tempering heated to 150-200 ℃, cooling in still air
Annealing to 750-780 ℃, to stay at this temperature for 1-2 hours, allowed to furnace cooling
Gauge, razor, file, cutting tools: tempering temperature 150 ~ 200 ℃;
Die, die stamping, bending, finishing mold: tempering temperature 180 ~ 230 ℃;
Steel chisel, woodworking cutting tools: tempering temperature of 200 ~ 250 ℃.
