Is heat-resistant steel 8433 also suitable for forging high-temperature alloys?

A netizen who consulted 8566 asked me, is 8433 also suitable for high-temperature alloy forging?

To be honest, the hardness of heat-resistant steel 8433 is 50-54HRC, which is a hot forging high-temperature alloy. The thermal wear performance of 8433 is slightly inferior. Although the heat resistance of 8433 is 2-3 times that of H13, its carbon content is low, and its thermal wear performance is still inferior for aircraft blades made of high-temperature alloys. If it must be used, nitriding or other surface coatings must be made to increase the surface wear resistance in order to be suitable for high-temperature alloy forging.

High temperature alloys have a high total alloy content and are difficult to deform. They not only require high heat resistance, but also high thermal wear resistance. Therefore, high carbon, high hardness, high alloy, and high heat resistance die steel must be used to withstand them. Otherwise, like H13, they are prone to mold collapse and cracking. Even if nitrogenated, they can only be broken in a few hundred pieces.

Objectively speaking, high-temperature alloy materials are expensive, and the value of forged parts is high. Don’t worry about the price of die steel, nor do you think about makingdie molds. Trading the quantity of molds for production is not cost-effective. We need to pay attention to the production volume and the length of mold life, which are the profit growth points.

From the perspective of the performance requirements of high-temperature alloy hot forging molds, I still recommend 8566 die steel with high heat resistance, high hardness, and high toughness.

Because the heat resistance of 8566 die steel is as heat-resistant as high-speed steel SKH51, with a hardness of 58-60HRC and toughness four times that of SKH51, 8566 die steel softens the three aspects of high heat resistance, high hardness, and high toughness perfectly, which is the required performance for high-temperature alloy forging molds, while other die steels do not possess these properties.

Using 8566 die steel to make high-temperature alloy forging dies has longer lifespan, higher efficiency, and you make money. As Mr. Zhang said, the red punched 304 stainless steel and 8566 received a five-star rating. The product has a very good surface finish, and after production, it looks as beautiful as the pipe!