How should silicone mold choose steel?

At present, several types of steel materials commonly used for silicone molds include 55#, P20, 718, S136, etc. Silicone button customization manufacturers recommend that customers choose steel materials when opening molds. What are the differences between these steel materials?

Since the structure of ordinary silicone button molds is relatively simple, if a sample mold is developed to confirm the structure, or the product production cycle is not long, and the order quantity is not large, 55# steel can meet the requirements. 55# steel is cheap and easy to process. It can well control the cost of silicone molds.

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If you are customizing miscellaneous silicone rubber products, sealing rings, precision structural parts, silicone daily necessities, silicone sexual products, etc., or when the requirements for precision are relatively high, or when the processing of burrs is strict, 55# steel is not suitable and requires higher hardness. P20, 718, S136, etc., which are made of better materials, are several times more expensive than 55# steel and are more difficult to process. Therefore, the mold price is higher, but the customized silicone products have good surface effects and are easy to handle after post-processing. Polishing and other effects are also better. If the product production cycle is long, the surface effect is strict, or there are polishing and electroplating requirements, it is generally recommended to use this type of steel to open the mold.