1.3255 / S18-1-2-5 High Speed Steel
1.3255 steel is a Tungsten-Cobalt high speed tool steel according to W-Nr standard,and S18-1-2-5 steel is as per DIN Germany standard. DIN 1.3255 hss steel is similar to 1.3355 steel but with added 5% cobalt to increase heat resistance.The red hardness of S18-1-2-5 steel is higher than hs18-0-1.The surface hardness can reach 66-68HRC after heat treatment.
Carbon:0.75/0.83; Chromium:3.80/4.50; Molybdenum:0.50/0.80;
Vanadium:1.40/1.70; Tungsten: 17.50/18.50; Cobalt:4.50/5.50;
AISI/ASTM:T4; UNS:T12004; JIS/KS:SKH3;
3.Form & Size
1)Fuhongsteel are manufacturers and suppliers of 1.3255 High Speed Steel round bars,flat/square bars,plates,sheets.
2)S18-1-2-5 High Speed Tool Steel Size Available(Length can be customized):
dia. 1-16mm(cold draw);
dia. 10-50mm(hot rolled);
dia. 50-180mm(hot forged);
dia. 180-300mm(free forging);
Thickness: 1-2.5mm(cold rolled); 1.5-20mm(hot rolled); 20-300mm(hot forged);
Width: Max 800mm;
5.DIN 1.3255 HSS Steel Applications
1.3255 tool steel is generally used in high speed cutting tool, tools on automation machines, and high strength materials.
1)Preheat din S18-1-2-5 tool steel uniformly and slowly to 860-880°C.
2)Increase the forging temperature up to 1150-1200°C.
3)1.3255 steel should be cooled very slowly after forging.
W-Nr 1.3255 tool steel should be annealed after hot working. Increase the temperature of S18-1-2-5 high speed steel to 850°C(Max220°C per hour). Hold at the temperature and then cool slowly with the furnace. The annealed hardness achieved should be below 255HB.
1)Preheat the S18-1-2-5 hss steel to 500°C ;
2)Then increase the temperature until 880-900°C;
3)Heating the hardening temperature around 1180°C;
4)Din 1.3255 high speed steel must be heated throughly;
5)Quench in the warm oil,and then complete the quench;
6)S18-1-2-5 tool steel is always suitable for vacuum hardening.
1)Temper 1.3255 high speed steel immediately after quenching;
2)Heat thoroughly and uniformly to the tempering temperature;
3)Hold for at least two hours (one hour per about 25mm);
4)Triple tempering is strongly recommended for S18-1-2-5 tool steel.
Enquiry for DIN 1.3255 / S18-1-2-5 high speed steel round rods,flat/square bars,plates,sheets and blocks.