SKH59 High Speed Steel
JIS SKH59 high speed tool steel manufacturers and suppliers,supplied in round rods,square bars,flat bars,plates,sheets,and blocks,produced as forged,rolled,and cold drawn.
SKH59 steel is a cobalt-molybdenum high speed steel according to JIS Japan standard.With an additional 8% cobalt,It achieves a higher hardness and superior hot hardness.The hardness of SKH59 tool steel can be 68-70 HRC after the heat treatment. Tools made from SKH59 steel have an excellent toughness & cutting performance.
Carbon:1.05/1.15; Chromium:3.50/4.50; Molybdenum: 9.00/10.00;
Vanadium:0.90/1.30; Tungsten:1.20/1.90; Cobalt:7.50/8.50;
3.Form & Size
1)SKH59 high speed tool steel round bars,flat bars,square bars,blocks and forging pieces.
2)JIS SKH59 high speed steel size available(Length can be customized):
dia. 1-16mm(cold drawn);
dia. 10-50mm(hot rolled);
dia. 50-180mm(hot forged);
dia. 180-300(free forging);
Thickness: 1-2.5mm(cold rolled); 1.5-20mm(hot rolled); 20-300mm(hot forging);
Width: Max 800mm;
forging pieces and blocks can be customized.
1)Black & Peeled
JIS SKH59 steel is suitable for manufacturing various strong cutting tools with wear-resistant,resistant to impact.It is widely used in advanced punching die,screw die,the toughness and complicated shape of the punch,etc.
1)Preheat SKH59 high speed steel uniformly to 650-750°C;
2)Increase the forging temperature to 1050-1150°C;
3)Always keep the temperature of the material above 970°C during the forging;
4)Cool SKH59 high speed steel after forging.
SKH59 hss steel should be annealed after hot working,and before re hardening is recommend.Heat this material to 850°C. Keep at the temperature for one hour per 25mm of whole thickness,then cool in the furnace slowly.The annealed hardness achieved should not be higher than HB269.
Hardening (in a vacuum,atmosphere furnace, or salt bath)
1)Pre heat JIS SKH59 steel to 850°C ;
2)Transfer the steel to the high temperature salt bath or furnace;
3)Heat the hardening temperature to 1180°C;
5)Quench SKH59 tool steel into salt at 550-600°C,then complete the quench in the air.
1)Heat thoroughly and uniformly to the tempering temperature 550-660°C;
2)Triple tempering is strongly advised for SKH59 tool steel.
3)Cool it down to the room temperature in the air(20°C).
Enquiry for JIS SKH59 high speed steel round rods,square/flat bars,plates,sheets,blocks.