DIN 1.2083 steel is chromium alloyed stainless plastic mold steel. It is equivalent to AISI 420 steel. The steel 1.2083 is a major steels for hot pressing in circulation.

1.2083 stainless steel is generally supplied annealed condition with a hardness < 230HB. It can also be delivered ESR and quenched and tempered to 320 HB.

Main characteristics of DIN 1.2083 are :

– a good atmospheric corrosion resistance,

– an excellent polishability,

– a good machinability in annealed condition,

– a high hardenability

– a good wear resistance

  • din 1.2083 steel plastic mold stainless steel
  • din 1.2083 steel plastic mould stainless steel
  • din 1.2083 steel AISI 420 plastic mould stainless steel

1. Supply Range of DIN 1.2083

Flat Bar / Round Bar: diameter 20~500mm

Condition: hot rolled; ESR; Q+T

2. Relevant Steel Specification for 1.2083 Stainless Steel

ISO EN 4957 ASTM A681
1.2083 / X40Cr14 420

3. DIN 1.2083 Steels Chemical Composition 

DIN ISO 4957 C Mn P S Si Cr
1.2083 / X40Cr14 0.36 0.42 max 1.0 0.03 0.03 max 1.0 12.50 14.50
ASTM / AISI A276 C Mn P S Si Cr
420 0.15 – max 1.0 0.04 0.03 max 1.0 12.00 14.00

4. Steel 1.2083 Steel Properties

Modulus of elasticity [103 x N/mm2]: 220

Density [g/cm3]: 7.80

Specific heat capacity[J/g.K]: 0.46

5. Forging of 1.2083 Stainless Steel

  • Hot forming temperature: 1050-850oC.

6. Heat Treatment

  • Soft Annealing

Heat to 760-800oC, cool in furnace slowly.

  • Stress-relieving

After rough machining the steel should be heated through to 650°C, holding time 2 hours. Cool to 500°C slowly, then freely in air.

  • Hardening

Preheating temperature: 600–850°C. Harden from a temperature of 1000-1050oC followed by oil, vacuum, pressure gas (N2), air or hot bath ar 500-550 C quenching. Protect the part against decarburization and oxidation during hardening. Soaking time: 1020°C, 30 minutes, 1050°C, 30 minutes. Soaking time = time at hardening temperature after the tool is fully heated through.

  • Tempering

Tempering temperature: 250-570oC.

7. Applications of 1.2083 Steel

It’s usually used for plastic mould plates and inserts for working with chemically aggressive plastics; because of excellent polishing, it is also suitable for optical and medical products.