Din1.2311 Hot Rolled / Forged Plastic Mold Steel With 28hrc - 34hrc Hardness
Din1.2311 Hot Rolled / Forged Plastic Mold Steel With 28hrc - 34hrc Hardness
Din1.2311 Hot Rolled / Forged Plastic Mold Steel With 28hrc - 34hrc Hardness
Din1.2311 Hot Rolled / Forged Plastic Mold Steel With 28hrc - 34hrc Hardness
Din1.2311 Hot Rolled / Forged Plastic Mold Steel With 28hrc - 34hrc Hardness

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Din1.2311 Hot Rolled / Forged Plastic Mold Steel With 28hrc - 34hrc Hardness

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DIN1.2311 Hot Rolled / Forged Plastic Mold Steel With 28HRC - 34HRC Hardness

 

 

1.2311 Tool Steel 
As an alloy tool steel grade 1.2311 is commonly supplied in the hardened and tempered condition with a supply hardness of approximately 300HB. This steel gives an excellent polished finish and is one of the most widely accepted specifications for machine cut plastic moulds and zinc die casting dies. This grade gives excellent wear resistance but if maximum surface hardness is required for compression moulding plastic dies or similar tools, the steel can be case hardened or nitrided.

 

Analysis                             
Carbon     0.35-0.45%                  Chromium 1.80-2.10%
Manganese     1.30-1.60%                  Molybdenum 0.15-0.25%
Sulphur

    0.03% max

                 Silicon 0.20-0.40%
Phosphorous     0.03% max

 
Applications :
This tool steel grade is ideally suited for the production of plastic moulds. Typical applications include die holders, zinc die casting dies, backers, bolsters and injection moulds. The versatility of 1.2311 tool steel with its high tensile characteristics enables uses for a variety of other applications such as shafts, rails and wear strips
  
Forging   Heat the steel slowly, allowing sufficient time for it to become heated through. Begin forging at 1050°C. Do not forge below 930°C reheating if necessary. After forging, cool very slowly.
 
Annealing    Heat uniformly to 770-790°C.  Soak well, cool slowly in the furnace
 
Stress Relieving    When dies are heavily machined, we recommend stress relieving just before finish machining in order to relieve machining strains. Heat to 460-500°C. Soak well and allow to cool in the air.
 
Hardening    Heat uniformly to 820-840°C until heated through. Quench in oil

 

Tempering

Heat uniformly and soak at the tempering temperature for at least one hour per 25mm of section. Allow to cool in still air.


Temperature [°C] 100 200 300 400 500 600
Hardness [HRc] 51 50 48 46 42 36
Tensile [N/mm²] 1730 1670 1570 1480 1330 1140
 

Nitriding

1.2311 steel may be nitrided to give a wear resistant case of approximately Rockwell C60 surface hardness with a case depth of between 0.35mm to 0.5mm. Nitriding P20 tool steel also increases the corrosion resistance. After nitriding at 525°C in ammonia gas the surface hardness of the P20 will be approximately 650HV.
 

Temperature Time Approx. Depth of Case
525ºC 20 hours 0.30mm
525ºC 40 hours 0.35mm
525ºC 60 hours 0.50mm
Tufftriding

At 570ºC tufftriding of 1.2311 tool steel will give a surface hardness of approximately 700HV. Allowing 2 hours treatment the surface hard layer will be approximately 0.01mm.

 
Heat Treatment

Heat treatment temperatures, including rate of heating, cooling and soaking times will vary due to factors such as the shape and size of each steel component. Other considerations during the heat treatment process include the type of furnace, quenching medium and work piece transfer facilities. Please consult your heat treatment provider for full guidance on heat treatment of 1.2311 tool steel.

 

 
1. Grade:DIN1.2311/P20/3Cr2Mo
 
2. Condition:Hot rolled or Forged,Pre-harden & tempering, Black surface
 
3. Hardness:28-34HRC
 
4. Ultrasonic test standard:SPE1921-GR3, CLASS C/C


 


 

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