Discover the secrets of liquid silicone mold steel: make your product stand out!

Discover the Secrets of Liquid Silicone Mold Steel: Make Your Product Stand Out!

The choice of steel for liquid silicone molds is critical to mold performance, longevity, and part quality. The right steel selection can make the difference between a mold that produces millions of perfect parts and one that fails prematurely.

Recommended Steel Grades for LSR Molds:

1. Stainless Steel (SS420, SS416): Excellent corrosion resistance, good polishability, ideal for medical and food-grade applications. Resists the corrosive effects of LSR curing byproducts.

2. Pre-hardened Steel (P20, 718): Good toughness and machinability, suitable for medium-volume production. Offers a good balance of cost and performance.

3. Hardened Steel (H13, S7): Superior wear resistance and hardness, suitable for high-volume production and abrasive LSR formulations. Requires heat treatment after machining.

Key Requirements:

- High surface polish (SPI A1 or better) for easy release

- Good thermal conductivity for uniform temperature distribution

- Corrosion resistance to withstand LSR curing byproducts

- Adequate hardness to resist wear from high-pressure injection