5CrNiMoV hot work mold steel

Mold steel forged block and plate is very popular steel block for mold die , it will choose excellent alloy steel raw material and be forged.

Material :5CrNiMo ,5CrNiMoV，5XHM , 55NiCrMoV6 , 1.2713 , AISI L6 ,   SKT4

Chemical specification 

Carbon (C): 0.50-0.60%,                                                providing a foundation for hardness and wear resistance. ??

Silicon (Si): ≤ 0.40%,                                                     improves strength but has a lower content to avoid brittleness. ??

Manganese (Mn): 0.50-0.80%,                                     enhances hardenability and toughness. ??

Hardness: 38-47HRC

This steel can be quenched and hardened by cooling in air, and is prone to forming white spots, so it should be slowly cooled after forging.

For large forgings, they must be placed in a furnace at 600 ℃, cooled slowly to 150-200 ℃ after the temperature is consistent, and then cooled in air.

For larger forgings, it is recommended to immediately perform tempering heating after cooling to 150-200 ℃.

Mechanical property and heat treatment 

Annealing: 760-780 ℃ Hardness: 197-241HB

Quenching temperature: 890-910 ℃, oil cooled, hardness: 61.5HRC

Tempering temperature: 420-550 ℃, tempering twice

Hardness: 38-47HRC

According to its size , it could be divided the following type:

1. forging block

2. forging plate 

Its size range following:

Max width: 1500mm

Delivery condition:

1. Forged + annealing + black surface

2. Forged + annealing + polish

3. Forged + quenching /tempering + black surface

4. Forged + quenching /tempering + polish