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Description:
1.2436 (X210CrW12) tool steel is a cold work steel with a ledeburitic structure and 12% chromium content. It has very high wear resistance.
It is a tungsten-added version of 1.2080 steel. Compared to 1.2080, 1.2436 steel has better hardenability towards the core and higher toughness. However, it lacks secondary hardening capability.
The wear resistance of 1.2436 (X210CrW12) steel is higher than that of 1.2379, but its toughness is lower.
GRADE(%) |
C |
Si |
Mn |
P |
S |
Cr |
W |
1.2436 |
2.00-2.30 |
0.10-0.40 |
0.30-0.60 |
≤0.030 |
≤0.030 |
11.00-13.00 |
0.60-0.80 |
HEAT TREATMENT:
· FORGING: Heat the DIN1.2436 tool steel slowly and uniformly to 700°C then more rapidly to 900-1050°C. After forging cool slowly, preferably in a furnace.
· ANNEALING:DIN1.2436 tool steel is supplied in the annealed and machineable condition. Re-annealing will only be necessary if the tool steel has been forged or hardened by the toolmaker. To anneal heat to 800-840°C and slow furnace cool. Hardness after annealing will be approximately 225 brinell.
· STRESS RELIEVING:If machining operations have been heavy or if the tool has an unbalanced section, remove stresses before hardening by heating up to 650-700°C, equalise, then cool slowly.
· HARDENING:Pre heat slowly to 750-800°C and thoroughly soak. Continue heating to the final hardening temperature of 950-980°C and allow the component to be heated through. Cool in air or quench in oil. D6 is suitable for vacuum (high speed gas) hardening.
· TEMPERING: To temper heat uniformly and thoroughly at the selected tempering temperature and hold for at least one hour per 25mm of total thickness. Double tempering should be carried out with intermediate cooling to room temperature.
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