D2 / 1.2379 Tool Steel
AISI D2 / DIN 1.2379 tool steel manufacturers and suppliers, supplied in round rods,square/flat bars,plates,sheets,blocks,produced as forged,rolled and cold drawn.
D2 steel is a common cold work tool steel according to AISI / ASTM standard,and 1.2379 steel is as per W-Nr Germany standard.It offers high wear resistance and toughness.The heat treatment hardness can reach 60 HRC. DIN 1.2379 steel can be used to manufacture cold-work die steel which requires high abrasion resistance,such as silicon steel sheet stamping die,cold cutting scissors and trimming die.
1.Chemical Composition (%)
– AISI D2
Carbon:1.40/1.60; Silicon:0.10/0.60; Manganese:0.20/0.60; Phosphorus,Sulphur:0.030max;
Chromium:11.00/13.00; Molybdenum:0.70/1.20; Vanadium:0.50/1.10;
– DIN 1.2379
Carbon:1.50/1.60; Silicon:0.10/0.40; Manganese:0.15/0.45; Phosphorus,Sulphur:0.030max;
Chromium:11.00/12.00; Molybdenum:0.60/0.80; Vanadium:0.90/1.10;
3.Form & Size
1)Fuhongsteel are manufacturers and suppliers of AISI D2 Tool Steel round bars, flat/square bars,plates,sheets.
2)DIN 1.2379 Tool 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 forged);
Width: Max 800mm;
2)D2 die steel should be free of heavy scale,deep pitting,laps,porosity,injurious segregations,excessive nonmetallic inclusions,seams,cracks,slivers,scale marks,dents,soft and hard spots,pipes or any defects that would detrimentally affect the suitability of 1.2379 mold steel.
3)Visual examination for D2 mould steel shall be made to ensure compliance with the requirements for workmanship,finish,dimensions and tolerances,identification marking and packaging.
The permissible deviation of 1.2379 tool steel shall not exceed 3mm in 1000mm length.This applies also to bars under 1000mm in length.Measurement is taken on the concave side of D2 steel with a straight edge.
AISI D2 tool steel annealed hardness values when obtained in accordance with the latest issue of test methods and definitions A370 shall not exceed 255 Brinell.
1)Heat D2 steel slowly and uniformly to 900°C.
2)Soak for three to four hours and cool in the furnace to room temperature.
3)Re-heat 1.2379 steel to 900-1040°C and again soak for three to four hours.
4)Cool the material in the furnace to room temperature.
D2 tool steel is always supplied in the annealed and machineable condition.Re-annealing will only be necessary if the steel has been forged or hardened.
Pre heat 1.2379 die steel component to the temperature 750°C.The material can be brought up to 1000°C for air cooling, or 970°C for oil quenching. Soak thoroughly at the temperature for thirty minutes per 25mm,then cool or quench. when heating for hardening,it should not exceed 1020°C.
AISI D2 steel should be done with the least possible delay after hardening.Select a suitable tempering temperature, heat slowly and uniformly.When d2 steel has reached the desired temperature, soak for at least one hour per 25mm of whole dia.Double tempering is recommended.The second tempering should be a repetition of the first.
1)Grade,Size,Quantity in Number & Weight
5)Ultrasonic Test Report.
Enquiry for AISI D2 / DIN 1.2379 tool steel round rods,square/flat bars,plates,sheets.