Cns Sncm439 Steel Forging Temperature Red Line Warning - China

The forging temperature red line warning information of CNS SNCM439 steel (corresponding to AISI 4340 steel) is as follows:

1 - Forging temperature range: The forging temperature of CNS SNCM439 steel should be controlled between 1150°C and 1200°C.

During the forging process, the temperature should not be lower than 850°C.

2 - Measures when the temperature is below the red line: If the temperature drops below 850°C, it must be reheated to the forging temperature range.

3 - Cooling precautions: After forging, it should be cooled as slowly as possible to avoid cracking.

It is recommended to cool in sand or dry lime.

4 - Other precautions: CNS SNCM439 steel has good forging characteristics, but its sensitivity to cracking should be noted during cooling.

The above information can be used as a reference for temperature control during forging to ensure material performance and processing quality.

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