1.2083 Tool Steel

1.2083 is a chromium alloyed plastics mould stainless steel, which is characterised by good polishability, good hardenability giving high hardness, with fair corrosion resistance

Forging: Heat slowly and uniformly to 1000°C. After forging cool slowly.

Annealing: Heat slowly to 780°C. Slowly cool in furnace.

Hardening: Pre heat to 600-700°C until heated through. (Austenitizing temperature 1025°C.) Continue heating to the final hardening temperature of 980-1050°.

Tempering: Heat uniformly and thoroughly at the selected tempering temperatures and hold at heat for one hour per inch of total thickness. Double tempering is recommended.

Nitriding:
Nitriding of 1.2083 gives it a hard surface which is very resistant to wear and corrosion. However, the nitrided surface reduces the corrosion resistance. Surface hardness after nitriding at 525°C in ammonia gas will be approximately 1000HV.

Welding:
Due to the high risk of crack formation welding of 1.2083 stainless steel should be avoided, if possible. When, howe ver welding is essential, the following serves as a guide:

A.  Welding of soft annealed 1.2083 stainless steel.
·       Preheat to 300 - 500°C
·       Weld at 300-500°C
·      Immediately stress relieve

B.  Repair welding of 1.2083 stainless steel in hardened and tempered condition.
·       Preheat to the tempering temperature (min. 200°C) previously used.
·       Start welding  at tempering temperature
·       Re heat immediately to tempering temperature, but max. 300°C. Soaking time 3 hours.
·       Cool in air to approximately 80°C.
·       Re heat immediately to tempering temperature, but max. 300°C. Soaking time 3 hours.
Electrode: Hard facing electrode.